JCBgroundcaregroundcare tractors
Jcb 335HST
Maintenance schedule, common problems & OEM parts breakdown
The JCB 335HST is a compact groundcare tractor built by Daedong for JCB, featuring a 35 hp (26 kW) 4-cylinder diesel engine and hydrostatic transmission. It weighs approximately 1,685 lbs (764 kg) and includes 4-wheel drive, power steering, and a ROPS cab. The machine is configured with turf tires, a 3-point linkage, and front weights for stability. It is part of the 331HST/335HST compact tractor series, designed for turf care and light utility work.
The 335HST represents JCB's entry into the compact groundcare segment, utilizing a Korean-built platform to offer a cost-effective alternative to larger agricultural tractors. Its significance in the used market lies in its specialized turf tires and compact footprint, which allow access to tight sports fields and gardens. The machine's simple mechanical design and lack of complex emissions systems make it a durable option for low-hour commercial use, though parts availability is increasingly tied to the broader 331HST/335HST service manual pool.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Jcb 335HST specifications
Engine
| Model | 4 cylinder diesel (built by Daedong) |
| Gross/Net Power | 35 hp (26 kW) |
| Displacement | Not documented for this exact serial range — verify with your dealer |
| Cylinders | 4 |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | Not documented for this exact serial range — verify with your dealer |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length/Width/Height | Not documented for this exact serial range — verify with your dealer |
| Wheelbase or Track Gauge | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
| Other Class-Relevant Dimensions | Not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speeds | Not documented for this exact serial range — verify with your dealer |
| Class-Relevant Performance Figures | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service Capacities (Summary)
| Fuel Tank | 34 litre (9.0 gal) |
| Hydraulic System | 35 litre (9.2 gal) JCB Universal Agricultural Oil |
| Engine Oil | 5.7 litre (1.5 gal) JCB 10W/30 or SAE 30 API CD/CE above 25°C (above 77°F); 10W-30 or SAE 10 below 0°C (32°F) |
| Cooling System | 7 litre (1.8 gal) JCB Universal Antifreeze/water ASTM D3306-74 |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
335HST fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (with filter) | 5.7 litre (1.5 US gal) | JCB 10W/30 or SAE 30 API CD/CE above 25°C (above 77°F); 10W30 Multigrade SAE 20 0°C to 25°C (32°F to 77°F); 10W-30 or SAE 10 below 0°C (32°F) |
| Cooling System | 7 litre (1.85 US gal) | JCB Universal Antifreeze/water ASTM D3306-74 |
| Fuel Tank | 34 litre (9 US gal) | Diesel Oil K |
| Transmission/Powertrain | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Final Drives | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System and Tank | 35 litre (9.25 US gal) | JCB Universal Agricultural Oil |
| Axles/Differentials | 8.2 litre (2.17 US gal) | All Other Grease |
| Grease | N/A | JCB MPL Grease Lithium based no 2 consistency |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Jcb 335HST maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 335HST beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor engine oil and hydraulic fluid condition at every 500-hour interval. The 335HST uses JCB Universal Agricultural Oil for hydraulics and JCB 10W-30 or SAE 30 engine oil depending on ambient temperature. Check the hydraulic return filter magnet for metallic debris during oil changes. Sample engine oil annually to detect early wear. Inspect the coolant mixture for contamination every 1,000 hours. Track fuel filter replacement intervals to protect the diesel injection system.
Corrective & Common Repairs
Address hydraulic hose leaks at the kingpost and boom pivots frequently due to ground contact. Replace worn turf tires to maintain traction and prevent soil compaction. Inspect the 3-point linkage lift arms for bending and pin wear. Check the alternator belt tension regularly to prevent charging issues. Replace the engine air filter when the restriction indicator shows clogging. Repair steering cylinder seals to maintain precise control on uneven terrain.
Overhaul & Rebuild Points
Plan for hydrostatic transmission overhaul after 10,000 hours or when pressure drops significantly. Rebuild the diesel engine at 15,000 hours or when compression loss exceeds limits. Inspect the front axle gears and bearings for wear during the 2,000-hour service. Overhaul the 3-point linkage hydraulic valves if lift speed decreases. Replace the turbocharger if shaft play or excessive oil consumption is detected. Rebuild the starter and alternator if load tests fail.
Seasonal & Environment Servicing
Switch to SAE 10 or 10W-30 engine oil below 0°C (32°F) for cold starts. Use SAE 20 oil between 0°C and 25°C (32°F to 77°F). Use JCB 10W-30 or SAE 30 above 25°C (77°F). Check battery electrolyte levels in non-sealed batteries before winter. Inspect the cooling system for leaks and clean the radiator fins to prevent overheating in dusty conditions. Grease all pivot points more frequently in muddy or sandy environments.
335HST common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 331/90691 | Element, Fuel Filter | Fuel system service | Check fitment → |
| 331/90728 | O Ring, Fuel Filter Bowl | Fuel system service | Check fitment → |
| 353/01542 | Filter, Assembly, Air | Air intake service | Check fitment → |
| 353/01584 | Element, Air Filter, Main | Air intake service | Check fitment → |
| 331/90431 | Element, Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
335HST fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| P0087 | Fuel rail/system pressure too low | Fuel supply restriction, failing lift pump, or leak in low-pressure circuit | Check fuel filter condition and fuel line integrity; verify lift pump operation |
| P0117 | Engine coolant temperature sensor circuit low voltage | Sensor short to ground, open circuit, or faulty sensor element | Inspect sensor wiring harness and connector pins; test sensor resistance |
| P0112 | Intake air temperature sensor circuit low voltage | Intake air temp sensor short to ground or open circuit | Check IAT sensor wiring and connector; verify sensor signal voltage |
| P0182 | Fuel temperature sensor circuit low voltage | Fuel temp sensor short to ground or open circuit | Inspect fuel temp sensor wiring and connector; verify sensor signal |
| P0183 | Fuel temperature sensor circuit high voltage | Fuel temp sensor open circuit or power supply fault | Check fuel temp sensor power supply and ground; inspect wiring |
| P0335 | Crankshaft position sensor circuit no signal | Faulty crank sensor, damaged wiring, or missing signal ring | Inspect crank sensor connector and wiring; check sensor air gap |
| P0200 | Injector circuit open | Open circuit in injector wiring or connector | Check injector connector pins and wiring harness for damage |
| P0201 | Injector circuit open – 1st cylinder | Open circuit in injector 1 wiring or connector | Check injector 1 connector pins and wiring harness for damage |
| P0202 | Injector circuit open – 2nd cylinder | Open circuit in injector 2 wiring or connector | Check injector 2 connector pins and wiring harness for damage |
| P0203 | Injector circuit open – 3rd cylinder | Open circuit in injector 3 wiring or connector | Check injector 3 connector pins and wiring harness for damage |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
335HST attachments & work tools
Front-End Loaders
The JCB 335HST is equipped with a front loader end as a standard configuration, distinct from the rear three-point linkage. Factory options include front weights to balance the machine for loader operations.
Rear Three-Point Linkage
The machine features a rear three-point linkage system for mounting Category 1 implements. The service manual references Section A for attachment service procedures and quick release couplings.
Mid and Rear PTO
The tractor is specified with both mid and rear Power Take-Off (PTO) shafts to drive powered attachments. Approved attachments must be used to ensure safe operation with the PTO systems.
Mowers
Compatible work tools include mid-mounted mowers, specifically the RM1500M model, which utilizes dedicated drive components for the 335HST series.
Rotary Tillers
The machine supports rotary tillers such as the RT1450, which connects via the drive mechanism and PTO system for ground preparation tasks.
Backhoes
Backhoe buckets and attachments are available for the rear linkage, with specific service procedures outlined in Section A03 of the equipment documentation.
Hydraulic Systems
The hydraulic system capacity is 35 litres, utilizing JCB Universal Agricultural Oil. The system supports auxiliary hydraulics required for powered attachments.
Transmission
The machine uses a hydrostatic transmission (HST) with specific transmission components such as the 1.32M FM1320 and 1.58M FM1580 transmissions listed in parts catalogs.
All 335HST assemblies by section
Every catalogued assembly group for the Jcb 335HST. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
A Attachments
A1-1-1 Shovels, Ld2490
| 98***90 | Shovel, 1.3m | 1 |
| 98***91 | Shovel, 1.5m | 1 |
| 98***92 | Shovel, 4in1 1.3m | 1 |
A2-1-1 Backhoe Buckets -, Must Have 980/90527, Backhoe Attachment - See Section A03
| 98***81 | Bucket, Excavator 8 Inch | 1 |
| 98***82 | Bucket, Excavator 12 Inch | 1 |
| 98***83 | Bucket, Excavator 18 Inch | 1 |
A3-11-2 Rear Mounted Mower, Rm1500r Rm1800r, Transmission
| 33***93 | Gearbox, . | 1 |
| 33***95 | Shaft, Power Take-Off | 1 |
| 33***22 | Bolt | 1 |
A3-1-1 Weight Tray, Front
| 35***00 | Bolt | 4 |
| 35***82 | Bolt | 6 |
| 35***49 | Nut, Hex/2 | 4 |
A3-2-2 Mower 1.48m, Drive Mechanism, Fm1480hd
| 14***4Z | Washer | 2 |
| 33***48 | Bolt, M12 | 4 |
| 33***50 | Nut, Castle, M24 | 2 |
A3-4-2 Roller 1.8m, Drive Mechanism, Rl1800r
| 14***4Z | Washer | 2 |
| 33***48 | Bolt, M12 | 4 |
| 33***49 | Nut, Locking, M24 | 2 |
A3-3-8 Backhoe, Hydraulic Tank, Bh2724
| 33***44 | Adapter, . | 1 |
| 33***64 | Cover, Plate | 1 |
| 33***79 | Nut, M6 | 1 |
A3-9-1 Rotary Tiller, 1.45m, Rt1450
| 33***08 | Bolt | 1 |
| 33***15 | Bolt | 1 |
| 33***17 | Bolt | 1 |
A3-7-1 Fertilizer, Spreader, Fs6140
| 33***59 | Hopper, Fertilizer, Distributor | 1 |
| 33***60 | Ring, Rubber | 1 |
| 33***61 | Plate, Agitator | 1 |
A3-3-6 Backhoe, Hoses, Bh2724
| 33***38 | Adapter | 2 |
| 33***41 | Adapter | 1 |
| 33***62 | Hose, 270 Deg Fitting | 1 |
A3-14-1 Decals, Mid Mounted Mower
| 81***32 | Decal, Rm1500m | 1 |
| 81***02 | Decal, Warning, Pressure Hazard | 1 |
| 81***14 | Decal, Warning,Read Manual, Before Operating M/C | 1 |
A3-3-5 Backhoe, Boom & Dipper, Bh2724
| 33***46 | Bucket, Link | 1 |
| 33***50 | Bucket, Link | 1 |
| 33***51 | Bucket, Link | 1 |
A3-3-1 Backhoe, Spool Valve, Bh2724
| 33***36 | Valve, Lever Clamp | 1 |
| 33***38 | Valve, Segment | 1 |
| 98***97 | Lever | 2 |
A3-2-4 Mower Mid-Mounted, Cutting Bed, Rm1500m
| 33***25 | Wheel | 2 |
| 33***41 | Washer, M8 Sqr Spring | 4 |
| 33***18 | Mounting, Gearbox | 1 |
A3-8-2 Transmission, 1.32m Fm1320, 1.58m Fm1580
| 33***15 | Bolt | 1 |
| 33***18 | Bolt | 1 |
| 33***20 | Bolt | 1 |
A3-3-7 Backhoe, Rams, Bh2724
| 33***35 | Adapter, . | 1 |
| 33***36 | Adapter, . | 1 |
| 33***67 | Valve, Kit | 1 |
A3-11-1 Rear Mounted Mower, Rm1500r 1.5m, Rm1800r 1.8m
| 33***16 | Bolt | 1 |
| 33***23 | Bolt | 1 |
| 33***24 | Bolt | 1 |
A3-7-2 Transport Box, Lb750
| 33***54 | Bolt | 1 |
| 33***73 | Bolt | 1 |
| 33***76 | Bolt | 1 |
A3-12-1 Backhoe Attachment, Must Have 980/90528, Or 980/90588 - (2 Or 3 Spool Loader)
| 98***27 | Backhoe Assembly Kit, 331hst/335hst | 1 |
A3-3-3 Backhoe, Pump & Gearbox, Bh2724
| 33***25 | Gearbox, . | 1 |
| 33***26 | Gear, . | 1 |
| 33***27 | Gear, . | 1 |
A3-4-1 Roller 1.8m, Mower, Rl1800r
| 98***06 | Bar, Scraper | 2 |
| 98***08 | Bearing, Roller | 4 |
| 98***09 | Adjuster | 4 |
A3-5-2 Topper 2.13m, Drive Mechanism, Tm2130
| 14***4Z | Washer | 2 |
| 33***48 | Bolt, M12 | 4 |
| 33***49 | Nut, Locking, M24 | 2 |
A3-6-2 Spool, 2 Valve (980/90528), Ld2490
| 25***86 | Block, 2 Spool, Valve | 1 |
| 33***10 | Manifold, Block | 1 |
| 33***86 | Lever, Controller, Joystick | 1 |
A3-2-3 Mower Mid-Mounted, Drive Components, Rm1500m
| 98***19 | Attachment, Mower Mid 60in Rear, 331hst/335hst | 1 |
| 98***52 | Belt, Mower 60" | 1 |
| 98***53 | Blade | 3 |
A3-2-6 Mower Mid-Mounted, Linkage And, Hydraulics Rm1500m
| 33***80 | Seal, Kit | 1 |
| 33***23 | Link, Lifting Arm | 2 |
| 33***24 | Link, Lifting Arm | 2 |
A3-2-1 Mower 1.48m, Heavy Duty, Rotary Fm1480hd
| 98***15 | Blade, L/H | 2 |
| 98***22 | Blade, R/H | 2 |
| 98***29 | Kit, Blade, Bolt, Nut | 1 |
A3-8-1 Flail Mower, 1.32m Fm1320, 1.58m Fm1580
| 33***16 | Bolt | 1 |
| 33***23 | Bolt | 1 |
| 33***30 | Bolt | 2 |
A3-11-3 Mower, Lubrication, Rm1500r Rm1800r
| 33***78 | Nipple, Grease | 1 |
| 33***27 | Adapter | 1 |
| 33***28 | Nut | 1 |
A3-3-4 Backhoe, Mainframe, Bh2724
| 33***30 | Adapter, . | 6 |
| 33***32 | Bulkhead, Plate | 3 |
| 33***34 | Adapter, . | 2 |
A3-10-1 Guards, Rear Hitch & Pto
| 35***89 | Bolt | 2 |
| 35***33 | Bolt | 1 |
| 35***57 | Bolt | 6 |
A3-2-8 Mower Mid-Mounted, Pilot Check Valve, Circuit Rm1500m
| 13***2Z | Bolt | 2 |
| 13***9Z | Bolt, M12x35 Grade 8.8 | 1 |
| 13***1Z | Nut, M8 | 2 |
A3-6-3 Spool, 3 Valve (980/90588), Ld2490
| 25***87 | Block, 3 Spool, Valve | 1 |
| 33***11 | Manifold, Block | 1 |
| 33***12 | Manifold, Block | 1 |
A3-6-1 L0ader, Front End, Ld2490
| 33***80 | Accumulator | 1 |
| 33***81 | Bracket | 1 |
| 33***82 | Hose | 1 |
A3-6-5 Shovels, And Attachments, Front Loader Ld2490
| 98***89 | Kit, Dampening System | 1 |
| 98***90 | Shovel, 1.3m | 1 |
| 98***91 | Shovel, 1.5m | 1 |
A3-11-4 Castor Wheel, 1.5m 1.8m, Rear Mounted Mower
| 33***28 | Tba | 1 |
| 33***39 | Nut | 1 |
| 33***53 | Washer | 1 |
A3-3-2 Backhoe, Console, Bh2724
| 33***76 | Screw, M5 X 10mm | 12 |
| 33***78 | Washer, M6 | 12 |
| 33***99 | Pin, 1/4 | 2 |
A3-9-2 Rotary Tiller, Drive Mechanism, Rt1450
| 33***12 | Bolt | 1 |
| 33***14 | Bolt | 1 |
| 33***16 | Bolt | 1 |
A3-2-7 Front Castor, Rm1500m
| 13***1D | Screw, Set M6x12 | 2 |
| 33***25 | Wheel | 1 |
| 33***28 | Spindle, Castor | 1 |
A3-10-3 Hitch, & 3 Point Linkage, Rear
| 35***56 | Bolt | 3 |
| 35***63 | Bolt | 8 |
| 35***71 | Bolt | 2 |
A3-6-4 Mountings, Front Loader, Ld2490
| 33***28 | Tube, Cross | 1 |
| 33***38 | Plate, Mounting L/H | 1 |
| 33***39 | Plate, Mounting R/H | 1 |
A3-5-1 Topper 2.13m, Tm2130
| 98***48 | Attachment, Topper 2.13m | 1 |
| 98***14 | Shaft, Power Take-Off | 1 |
| 98***15 | Blade, L/H | 2 |
B Bodywork, Cab, Loader End
B1-3-2 Side Panels, Engine > 1170041
| 35***21 | Bolt, Hex | 16 |
| 35***55 | Bolt, M8x16 | 4 |
| 35***57 | Bolt | 2 |
B1-2-2 Bonnet & Front, Grille > 1170041
| 35***95 | Bolt | 4 |
| 35***96 | Bolt, M8x20 | 7 |
| 35***20 | Bolt | 6 |
B1-2-1 Bonnet & Front, Grille < 1170040
| 35***43 | Bolt | 2 |
| 35***58 | Bolt | 2 |
| 35***96 | Bolt, M8x20 | 2 |
B1-1-2 Bonnet Mounting, > 1170041
| 35***27 | Bolt | 2 |
| 35***55 | Bolt, M8x16 | 4 |
| 35***57 | Bolt | 4 |
B1-3-1 Side Panels, Engine < 1170040
| 35***25 | Washer | 16 |
| 35***99 | Rivet | 16 |
| 35***93 | Net | 1 |
B1-17-1 Tank, Diesel Fuel
| 35***18 | Bolt | 5 |
| 35***57 | Bolt | 4 |
| 35***51 | Cap, Fuel Tank | 1 |
B1-4-1 Fenders, Rear Frame, & Mudguards
| 35***14 | Screw | 3 |
| 35***47 | Bolt | 4 |
| 35***43 | Bolt | 1 |
B1-5-1 Front Chassis
| 35***07 | Bolt | 16 |
| 35***55 | Bolt, M8x16 | 9 |
| 35***97 | Bolt, M8x25 | 3 |
B1-1-1 Bonnet Mounting, < 1170040
| 35***57 | Bolt | 4 |
| 35***72 | Bolt | 2 |
| 35***96 | Bolt, M8x20 | 10 |
B2-6-1 Cab Frame, (Optional Fit), B02-06-01 To B02-25-01
| 33***72 | Cab, Frame, 331 | 1 |
| 33***73 | Motor, Wiper | 1 |
| 33***74 | Arm, Wiper | 1 |
B2-14-1 Cab Cover For, Wiper Motor
| 33***35 | Rivet, M4 X 10 | 2 |
| 33***05 | Cover, Wiper | 1 |
| 33***07 | Rivet M4x12 | 2 |
B2-8-1 Cab Rear Window
| 33***76 | Glass Rear | 1 |
| 33***77 | Holder, Buckle | 1 |
| 33***78 | Spring, Hydropneumatic | 2 |
B2-11-1 Cab Door
| 33***68 | Rubber 3,5x13 | 0 |
| 33***87 | Nut M8 | 5 |
| 33***06 | Door R/H | 1 |
B2-12-1 Cab Roof
| 33***85 | Screw M8x25 | 2 |
| 33***52 | Roof, Cab | 1 |
| 33***54 | Cover, Recess | 2 |
B2-17-1 Cab Mounting, Rear
| 33***73 | Screw M12x30 | 4 |
| 33***75 | Bracket Suppot R/H | 1 |
| 33***76 | Bracket Support L/H | 1 |
B2-19-1 Cab Wind-Screen, Washer
| 33***72 | Screw M6x16 | 2 |
| 33***74 | Washer 6,4x14 | 4 |
| 33***75 | Nut M6 Din 985 | 2 |
B2-22-1 Cab Lighting
| 33***76 | Bulb Halogen H4 | 2 |
| 33***77 | Light Lens | 2 |
| 33***78 | Switch, Rocker | 1 |
B2-15-1 Cab Air Duct
| 33***10 | Washer 4,3x12 | 2 |
| 33***62 | Duct Air | 1 |
| 33***63 | Rivet, 4x15 | 4 |
B2-10-1 Cab Side Window
| 33***68 | Rubber 3,5x13 | 0 |
| 33***89 | Bezel | 2 |
| 33***91 | Glass Side Window | 1 |
B2-25-1 Cab Soundproofing
| 33***16 | Panel, Upholstery, Seat-Sheet-Metal | 1 |
| 33***17 | Panel, Soundproofing Fender, Upholstery R/H | 1 |
| 33***18 | Panel, Soundproofing Fender, Upholstery L/H | 1 |
B2-7-1 Cab Front Window
| 33***67 | Bezel, Front Mounting | 1 |
| 33***68 | Rubber 3,5x13 | 0 |
| 33***71 | Glass Front_ | 1 |
B2-24-1 Cab Beacon Light
| 33***58 | Cable Tie 160mm | 3 |
| 33***61 | Fuse, 5 Amp | 1 |
| 33***67 | Switch, (1 Level) | 1 |
B2-23-1 Cab Auxiliary, Lighting - Rear
| 33***53 | Grommet 13mm | 1 |
| 33***31 | Housing Frame | 1 |
| 33***61 | Fuse, 5 Amp | 1 |
B2-20-1 Cab Rear Window, Washer
| 33***48 | Wiper, Rear - Complete Assembly | 1 |
| 33***49 | Wiper Arm 350mm | 1 |
| 33***50 | Wiper Blade | 1 |
B2-18-1 Cab Accessories
| 33***72 | Screw M6x16 | 10 |
| 33***74 | Washer 6,4x14 | 18 |
| 33***75 | Nut M6 Din 985 | 6 |
B2-4-1 Seat, & Base
| 35***96 | Bolt, M8x20 | 7 |
| 35***97 | Bolt, M8x25 | 4 |
| 35***99 | Clamp, Harness | 2 |
B2-2-1 Instrument Panel, Mounting
| 35***96 | Bolt, M8x20 | 9 |
| 35***40 | Nut, M8 | 1 |
| 35***66 | Nut | 1 |
B2-13-1 Cab Heater -, Roof Mounted
| 33***86 | Washer 8,4x18 | 1 |
| 33***87 | Nut M8 | 1 |
| 33***65 | Heater 12v | 1 |
B2-5-1 Floor Mountings
| 35***44 | Bolt | 8 |
| 35***45 | Bolt | 8 |
| 35***16 | Washer | 16 |
B2-9-1 Cab Front Window, Lower
| 33***68 | Rubber 3,5x13 | 0 |
| 33***72 | Screw M6x16 | 2 |
| 33***74 | Washer 6,4x14 | 4 |
B2-21-1 Cab Auxiliary, Lighting - Front
| 33***55 | Clip 4,2mm | 4 |
| 33***65 | Lighting H-3 | 1 |
| 33***66 | Light H-3 | 2 |
B2-3-1 Floor Pan, & Steps
| 35***87 | Bolt | 4 |
| 35***96 | Bolt, M8x20 | 6 |
| 35***07 | Bolt, M10x25 | 6 |
B2-1-1 Safety Frame, Rops (Standard Fit), B02-01-01 To B02-05-01
| 35***83 | 331 & 335 Rops Frame | 1 |
| 35***50 | Nut | 2 |
| 35***17 | Washer | 2 |
B2-16-1 Cab Mounting, Front
| 33***67 | Bracket Front L/H | 1 |
| 33***68 | Bearing, Silent | 2 |
| 33***69 | Bracket Front R/H | 1 |
B5-1-2 Decals 2, Machine
| 35***01 | Decal | 1 |
| 35***02 | Decal | 1 |
| 35***03 | Decal | 1 |
B5-8-1 Tool Kit
| 35***93 | Wheelbrace, 22mm | 1 |
| 35***53 | Key, Ignition | 0 |
| 35***62 | Kit-Tool | 1 |
B5-1-1 Decals 1, Machine
| 35***13 | Decal | 1 |
| 35***14 | Decal | 1 |
| 35***16 | Decal | 2 |
C Electrics-Machine, Cab & Engine
C1-5-1 Harness, Rear, Machine
| 35***41 | Tie, Cable | 12 |
| 35***25 | Harness, Assembly, Rear | 1 |
| 35***02 | Harness, Assembly Rear, Inc Wire For Ext Beacon | 1 |
C1-4-1 Harness, Engine
| 35***55 | Bolt, M8x16 | 2 |
| 35***99 | Clamp, Harness | 5 |
| 35***23 | Harness, Assembly, Engine | 1 |
C1-1-1 Battery & Mountings
| 35***14 | Nut | 4 |
| 35***95 | Plate | 1 |
| 35***17 | Seal | 1 |
C1-3-1 Harness, Machine
| 35***24 | Harness, Main, Machine | 1 |
C1-2-1 Lights, (Old)
| 33***35 | Lens, Rear, 67x160; For Use With 35***27 As Only Supp Complete | 1 |
| 35***20 | Screw | 6 |
| 35***83 | Bolt | 2 |
C1-2-2 Lights, (New)
| 33***35 | Lens, Rear, 67x160; For Use With 35***27 As Only Supp Complete | 1 |
| 35***83 | Bolt | 2 |
| 35***22 | Bolt | 2 |
C1-20-1 Battery Charger
| 33***81 | Battery, Charger Kit | 1 |
C2-4-1 Alternator
| 33***86 | Alternator | 1 |
C2-1-1 Electrical, Components
| 35***09 | Screw | 2 |
| 35***34 | Bolt | 3 |
| 35***36 | Bolt | 1 |
C2-3-1 Starter Motor
| 33***84 | Starter | 1 |
C2-2-1 Instrument Electrics
| 33***14 | Sender | 1 |
| 33***37 | Gasket | 1 |
| 33***44 | Connector | 1 |
C2-5-1 Alternator Mountings
| 33***87 | Plate | 1 |
| 33***88 | Bolt | 1 |
| 33***30 | Washer | 1 |
C3-1-1 Instrument Panel
| 35***53 | Key, Ignition | 0 |
| 35***27 | Decal | 1 |
| 35***28 | Decal | 1 |
D Controls-Machine, Engine & Steering
D1-4-1 Controls, Hand Brake, & Linkage
| 35***44 | Bolt | 2 |
| 35***58 | Bolt | 3 |
| 35***96 | Bolt, M8x20 | 4 |
D1-3-1 Controls, Brake Pedals, & Linkage
| 35***33 | Nut | 2 |
| 35***40 | Nut, M8 | 2 |
| 35***28 | Washer, Plain | 4 |
D1-6-1 Controls, Lift Arm Lever
D1-7-1 Controls, Rear Pto Lever, (Power Take Off)
D1-1-1 Controls, Mid Power Take Off, (Pto)
| 35***97 | Bolt | 2 |
| 35***34 | Bolt | 1 |
| 35***16 | Washer | 3 |
D1-2-1 Controls, Forward & Reverse
| 35***13 | Bolt, M8x30 | 1 |
| 35***56 | Bolt, M8x20 | 8 |
| 35***57 | Bolt | 4 |
D1-8-1 Controls, Lever Knobs
| 35***21 | Screw | 1 |
| 35***14 | Bolt | 1 |
| 35***40 | Nut, M8 | 1 |
D1-5-1 Controls, 4wd & Linkage
| 35***57 | Bolt | 1 |
| 35***16 | Washer | 1 |
| 35***28 | Washer, Plain | 4 |
D2-1-1 Throttle Controls
D2-5-1 Cruise Control -, Speed (Magnetic)
| 35***96 | Bolt, M8x20 | 2 |
| 35***50 | Stud | 1 |
| 35***14 | Nut | 3 |
D3-1-1 Steering Wheel, & Surround
| 35***70 | Screw | 10 |
| 35***18 | Washer | 1 |
| 35***06 | Knob | 1 |
E Hydraulics & Air Including, Steering
E1-4-1 Circuit, Steering & Tilt
| 35***33 | Bolt | 1 |
| 35***55 | Bolt, M8x16 | 2 |
| 35***96 | Bolt, M8x20 | 4 |
E1-1-1 Circuit, Neutral, Tractor Hydraulics
| 35***17 | Bolt | 2 |
| 35***58 | Bolt | 3 |
| 35***96 | Bolt, M8x20 | 2 |
E1-2-1 Circuit, Main & Pto Feed, Tractor Hydraulics
| 35***25 | Bolt | 3 |
| 35***07 | Bolt, M10x25 | 2 |
| 35***14 | Washer, Spring | 3 |
E1-3-1 Circuit, Rear Auxiliary, Tractor Hydraulics 331hst & 335<71171073
| 35***55 | Bolt, M8x16 | 3 |
| 35***56 | Bolt, M8x20 | 2 |
| 35***72 | Bolt | 2 |
E1-3-2 Circuit, Rear Auxiliary, Tractor Hydraulics 335hst >71171074
| 35***55 | Bolt, M8x16 | 3 |
| 35***56 | Bolt, M8x20 | 2 |
| 35***72 | Bolt | 2 |
E1-5-1 Cooler, Oil, Transmission
| 35***37 | Bolt | 2 |
| 35***45 | Bolt | 2 |
| 35***23 | Bolt | 3 |
E1-6-1 Free Flow Return
| 14***15 | Washer, Seal; Replaces Khj0891 | 1 |
| 14***24 | Washer, Bonded | 1 |
| 33***66 | Adaptor | 1 |
E2-1-1 Pump, Tractor Hydraulics
| 35***47 | Nut, Hex M8 | 4 |
| 35***14 | Washer, Spring | 4 |
| 35***90 | Pump, Assembly | 1 |
E3-1-1 Lubricants & Filters
E4-1-2 Ram Steering, (Ball Joints)
| 35***15 | Bolt | 4 |
| 35***82 | Nut | 2 |
| 35***16 | Washer | 4 |
E4-1-1 Ram, Steering, Before 29.10.06
| 35***15 | Bolt | 4 |
| 35***68 | Nut, Castle | 2 |
| 35***82 | Nut | 2 |
F Axles, Wheels & Transmission
F1-2-1 Axle Casing, Front
| 35***99 | Bolt | 2 |
| 35***47 | Bolt | 4 |
| 35***95 | Bolt | 1 |
F1-4-1 Hub & Components, Front Axle
| 35***69 | Bolt | 2 |
| 35***57 | Bolt | 20 |
| 35***40 | Nut, M8 | 2 |
F1-5-1 Axle Drive Head, Front Differential
| 35***64 | Bearing | 1 |
| 35***10 | Circlip | 1 |
| 35***42 | Seal, Oil | 1 |
F1-1-1 Axle Assembly, Front
| 35***80 | Axle, Assembly, Front | 1 |
F1-3-1 Drive Hub, Front Axle
| 35***13 | Bolt | 10 |
| 35***17 | Washer | 10 |
| 35***81 | Pin | 4 |
F2-1-1 Axles, Rear
F3-1-1 Wheels & Tyres, Front
| 12***41 | Valve, Tyre, Flexible (Tubeless) | 1 |
| 35***64 | Bolt, Wheel | 8 |
| 35***51 | Nut | 4 |
F3-2-1 Wheels & Tyres, Rear
| 35***64 | Bolt, Wheel | 8 |
| 35***51 | Nut | 4 |
| 35***18 | Washer | 12 |
F4-1-1 Propshaft, 4 Wheel Drive
| 35***55 | Bolt, M8x16 | 1 |
| 35***81 | Circlip | 1 |
| 35***83 | Circlip | 1 |
F5-8-1 Clutch (Pto), Power Take Off
| 35***72 | Bolt | 4 |
| 35***78 | Pin, Dowel | 2 |
| 35***44 | Bearing | 1 |
F5-2-1 Case, Transmission, Front Section
| 35***45 | Bolt | 4 |
| 35***47 | Bolt | 2 |
| 35***03 | Bolt | 1 |
F5-4-1 Case, Transmission, Centre Section
| 35***46 | Bolt | 14 |
| 35***85 | Bolt | 1 |
| 35***49 | Nut, Hex/2 | 4 |
F5-7-1 Gears, 4 Wheel Drive, & Linkage
| 35***56 | Bolt, M8x20 | 4 |
| 35***19 | Pin, Roll | 1 |
| 35***44 | Bearing | 1 |
F5-1-1 Damper, Transmission Input
| 35***56 | Bolt, M8x20 | 6 |
| 35***85 | Pin, Dowel | 2 |
| 35***23 | Damper, Assembly | 1 |
F5-13-1 Power Take Off (Pto), Rear Drive
| 35***95 | Bolt | 2 |
| 35***58 | Bearing | 2 |
| 35***60 | Bearing | 1 |
F5-15-1 Control Valve, & Linkage, Lift Arms
| 35***09 | Bolt | 1 |
| 35***34 | Bolt | 1 |
| 35***55 | Bolt, M8x16 | 1 |
F5-3-1 Hydrostatic Drive, (Hst) Unit & Filter
| 35***46 | Bolt | 2 |
| 35***53 | Bolt | 1 |
| 35***85 | Bolt | 2 |
F5-16-1 Lift Arm Position, Lever & Linkage
| 35***26 | Bolt | 2 |
| 35***95 | Bolt | 2 |
| 35***14 | Nut | 1 |
F5-12-1 Power Take Off (Pto), Mid-Mounted
| 35***20 | Bolt | 4 |
| 35***56 | Bolt, M8x20 | 6 |
| 35***14 | Washer, Spring | 4 |
F5-17-1 Speed Change, Rear Pto, (Power Take Off)
| 35***55 | Bolt, M8x16 | 2 |
| 35***57 | Pin, Cotter | 1 |
| 35***68 | Pin, Taper, Split | 1 |
F5-5-1 Gear Train, Reverse
| 35***72 | Bolt | 4 |
| 35***14 | Pin, Roll | 1 |
| 35***60 | Bearing | 1 |
F5-14-1 Top Case, Piston & Lift Arms
| 35***45 | Bolt | 3 |
| 35***50 | Bolt | 2 |
| 35***73 | Bolt, M10x30 | 5 |
F5-10-1 Gears, Rear Differential, & Lock
| 35***72 | Bolt | 6 |
| 35***27 | Washer, M6 | 1 |
| 35***32 | Washer | 2 |
F5-9-1 Casing, Rear Differential
| 35***61 | Stud | 2 |
| 35***63 | Stud | 4 |
| 35***77 | Stud | 4 |
F5-6-1 Reverse Gear, Selector
| 35***55 | Bolt, M8x16 | 2 |
| 35***31 | Washer | 1 |
| 35***68 | Pin, Taper, Split | 1 |
F5-11-1 Halfshafts & Casings, Rear Axle
| 35***73 | Bolt, M10x30 | 20 |
| 35***59 | Stud | 4 |
| 35***48 | Nut | 4 |
G Brakes
G1-1-1 Brakes, Rear Axle
| 35***47 | Bolt | 24 |
| 35***57 | Stud | 4 |
| 35***49 | Nut, Hex/2 | 6 |
K Engine
K1-5-1 Fans, Pulleys, & Fan Belt
| 33***08 | Pulley | 1 |
| 33***33 | Pulley | 1 |
| 33***43 | Fan | 1 |
K1-1-1 Engine, Complete, S4l & S4l2 Builds
| 35***36 | Engine, Complete; S4l Engine (331nhgbj) Jcb 331hst. Graphic Is For Illustration Purposes Only. Not All Items Shown Are Included. | 1 |
| 35***37 | Engine, Complete S4l2, S4l2 335nhgb | 1 |
K1-6-1 Timing Case, Camshaft & Gears
| 33***36 | Plate | 1 |
| 33***38 | Gasket, Oil Pump Cover | 2 |
| 33***81 | Camshaft | 1 |
K1-4-1 Crankshaft, Bearings, Pistons & Con-Rods
| 33***39 | Kit-Bearing, Big End, Undersize-0.25mm | 0 |
| 33***40 | Kit-Bearing, Big End, Undersize-0.50mm | 0 |
| 33***41 | Kit-Bearing, Big End, Undersize-0.75mm | 0 |
K1-3-1 Block Assembly
| 33***12 | Plug | 3 |
| 33***13 | Plug | 3 |
| 33***51 | Shaft | 1 |
K1-7-1 Flywheel & Housing
| 33***43 | Gasket, Starter Motor | 1 |
| 33***41 | Gear | 1 |
| 33***53 | Bolt | 4 |
K2-2-1 Rocker Assembly, Push Rods & Tappets
| 33***73 | Rocker | 8 |
| 33***76 | Shaft | 1 |
| 33***79 | Bracket | 1 |
K2-3-1 Rocker Cover
| 33***74 | Cover | 1 |
| 33***78 | Gasket, Rocker Cover | 1 |
| 33***71 | Bolt | 5 |
K2-4-1 Engine Lifting, Brackets
| 33***73 | Bolt | 2 |
| 33***98 | Bracket | 2 |
K2-1-1 Cylinder Head
| 33***60 | Guide | 4 |
| 33***61 | Guide | 4 |
| 33***62 | Bolt | 14 |
K3-4-1 Exhaust System
| 35***57 | Bolt | 4 |
| 35***51 | Silencer, Assembly, Exhaust | 1 |
| 35***59 | Gasket | 1 |
K3-3-1 Filter Air
| 35***55 | Bolt, M8x16 | 4 |
| 35***42 | Filter, Assembly, Air | 1 |
| 35***82 | Clip | 1 |
K3-2-1 Manifold, Exhaust
| 33***25 | Manifold | 1 |
| 33***26 | Gasket, Exhaust Manifold | 1 |
| 33***27 | Clamp | 1 |
K3-1-1 Manifold, Air Induction
| 33***21 | Pipe | 1 |
| 33***22 | Gasket, Inlet Pipe | 1 |
| 33***23 | Gasket, Inlet Cover | 1 |
K4-1-1 Water Pump
| 33***50 | Gasket, Water Pump | 1 |
| 33***65 | Bolt | 2 |
| 33***76 | Bolt | 3 |
K4-2-1 Thermostat, Housing, Inlet & Outlet
| 33***35 | Case | 1 |
| 33***37 | Thermostat | 1 |
| 33***39 | Gasket, Thermostat | 1 |
K4-3-1 Radiator, Fittings, & Mountings
| 35***97 | Bolt, M8x25 | 1 |
| 35***20 | Bolt | 5 |
| 35***21 | Bolt | 7 |
K5-4-1 Filter,Oil
| 33***31 | Element, Oil Filter | 1 |
| 33***24 | Valve | 1 |
| 33***29 | Gasket | 1 |
K5-1-1 Sump, Oil
| 33***49 | Bolt | 16 |
| 33***00 | Sump | 1 |
| 33***29 | Strainer | 1 |
K5-2-1 Pump, Oil, & Relief Valve
| 33***28 | Packing, Oil Pump Body | 1 |
| 33***30 | Pump | 1 |
| 33***56 | Bolt | 3 |
K6-1-1 Pump, Fuel Injection, & Shut-Off Solenoid
| 33***32 | Spring | 1 |
| 33***45 | Solenoid | 1 |
| 33***81 | Connector, Banjo Bolt | 1 |
K6-2-1 Injectors, Fuel, & Injection Pipes
| 33***49 | Pipe, Fuel Injector No.1 | 1 |
| 33***50 | Pipe, Fuel Injector No.2 | 1 |
| 33***51 | Pipe, Fuel Injector No.3 | 1 |
K6-3-1 Fuel System
| 33***53 | Hose, Fuel,Assembly | 1 |
| 33***55 | Bracket | 1 |
| 33***64 | Bolt | 2 |
K6-1-2 Governor
| 33***60 | Bolt | 1 |
| 33***67 | Shaft | 1 |
| 33***68 | Weight | 1 |
K6-7-1 Filter Fuel
| 33***56 | Screw | 2 |
| 33***90 | Bowl, Glass | 1 |
| 33***91 | Element, Fuel Filter | 1 |
K6-1-3 Fuel Pump, Camshaft & Gear
| 33***82 | Shaft | 1 |
| 33***67 | Bolt | 1 |
| 33***27 | Washer | 1 |
K8-1-1 Gasket Set, Overhaul
| 33***37 | Gasket | 1 |
| 33***38 | Gasket, Oil Pump Cover | 2 |
| 33***42 | Gasket, Exhaust | 1 |
335HST serial number reference
The machine identification plate is located on the chassis or frame. The serial number is also stamped into the chassis frame as a backup if the plate is missing or worn. Verify applicability with a JCB dealer using the chassis PIN and engine serial number.
| Prefix | Identifies | Notes |
|---|---|---|
| M1170000- | JCB Groundcare Tractors 331HST & 335HST. Applies to the 335HST compact tractor. Configuration includes 35 hp (26 kW) 4-cylinder diesel engine, 4-wheel drive, HST, ROPS, and PAS. | Serial prefix M1170000- is documented in the JCB Groundcare Tractors 331HST & 335HST Service Manual (Pub. No. the OEM part reference) and associated parts catalogs. The 335HST is built by Daedong in South Korea. |
Frequently asked questions
What engine does the JCB 335HST use?
The JCB 335HST uses a 35 hp (26 kW) 4-cylinder diesel engine built by Daedong.
What is the operating weight of the JCB 335HST?
The operating weight is approximately 1,685 lbs (764 kg).
What model replaced the JCB 335HST?
The source text does not specify a direct successor model for the JCB 335HST.
What 335HST owners discuss
What engine powers the JCB 335HST and what are its common failure modes?
The JCB 335HST is equipped with a 35 hp (26 kW) four-cylinder diesel engine. While specific failure modes for this exact groundcare engine are not detailed in the provided sources, general JCB engine troubleshooting indicates that early Dieselmax engines (Tier 2 and early Tier 3) are prone to big end bearing failures on the crankshaft if oil change intervals are stretched. Fuel injection pump faults are also common on earlier mechanical and early electronic engines. Worn piston rings are a primary cause of power loss, often necessitating a rebuild rather than a repair. Starting problems are frequently linked to battery issues or complex fuel system faults, including blockages or leaks in fuel lines, injectors, and pumps.
What are the known hydraulic and powertrain behaviors for the JCB 335HST?
The JCB 335HST utilizes a hydrostatic transmission (HST). The service manual for the 331HST and 335HST series specifies using JCB Universal Agricultural Oil for the hydraulic system, with a capacity of 35 litres. The front axle oil capacity is 8.2 litres. Operators should note that the cooling system is pressurized when hot; oil will gush from the drain plug upon removal. The engine oil capacity is 5.7 litres, requiring JCB 10W/30 or SAE 30 API CD/CE above 25°C (77°F), or 10W-30/SAE 10 below 0°C (32°F). The hydraulic system relies on JCB Universal Agricultural Oil, and maintaining a clean system is critical to minimize downtime and ensure maximum efficiency.
What undercarriage or wear patterns are typical for this machine type?
The JCB 335HST is configured with turf tyres rather than a tracked undercarriage. Consequently, wear patterns are associated with tire condition and wheel mounting rather than track tension or sprocket wear. The machine features 4-wheel drive and power steering (PAS). For groundcare applications, the machine is often equipped with a 3-point linkage and front weights. Operators should monitor the drive chain tension if equipped with attachments that utilize chain drive, as loose chains can hammer motors and other drive components. The side plate mounting for drive motors on related JCB skid steer platforms has been noted as a potential design weakness prone to fracturing due to thinness, though this specific critique is attributed to skid steer models rather than the 335HST tractor.
What are common electrical or sensor issues reported for JCB compact tractors?
Electrical issues in JCB compact tractors often involve the forward/reverse shuttle system. The direction of motion is selected via a lever that operates microswitches to activate hydraulic solenoids on the transmission body. A common fault is a failed forward microswitch or inhibitor switch, which can cause the machine to rev up but not move forward, or prevent starting entirely if the switch bridges wires incorrectly. Operators should verify that the reverse solenoid is energized by checking for magnetic attraction with a screwdriver blade; the forward solenoid should not be attracted when in neutral. Power flow to the forward solenoid passes through the starter switch, a 5-amp fuse, the dump relay, and the forward/reverse switch. Faults in the wiring color codes or connections at the transmission body under the cab are frequent causes of intermittent operation.
What fluids and lubricants are specified for the JCB 335HST?
The JCB 335HST requires specific JCB-branded fluids for optimal performance. The hydraulic system uses 35 litres of JCB Universal Agricultural Oil. The engine oil capacity is 5.7 litres, using JCB 10W/30 or SAE 30 API CD/CE depending on ambient temperature. The front axle requires 8.2 litres of oil. The cooling system holds 7 litres of JCB Universal Antifreeze/water meeting ASTM D3306-74. Grease points should be lubricated with JCB MPL Grease, a lithium-based no 2 consistency grease. For sealing, JCB Multi-Gasket (medium strength) and JCB High Strength Thread locker are recommended for gasket flanges and threaded components, respectively.
What serial number or PIN information is available for the JCB 335HST?
The service manual for the JCB 331HST and 335HST covers units from serial number M1170000 onwards. The machine identification plate is typically located on the right-hand side of the loader tower or cab frame. Major components such as the engine, axles, and gearbox each carry their own serial plates. Modern JCBs use a true 17-character PIN format post-2001, which includes year, plant, and machine-family breakdown. However, for the 335HST specifically, the manual references the serial range starting at M1170000. The last 6 digits of the VIN may also be stamped in a red box on the curb side of the frame under the engine compartment.
What should be checked when buying a used JCB 335HST?
When inspecting a used JCB 335HST, verify the serial number against the M1170000+ range to ensure correct manual applicability. Check the forward/reverse shuttle operation for smooth engagement, as electrical faults in the microswitches or solenoids are common. Inspect the hydraulic fluid for contamination and check the torque converter filter for metal filings, which indicate internal wear. Verify the condition of the turf tyres and the 3-point linkage. Ensure the engine starts easily and does not exhibit the rhythmic knocking associated with big end bearing failure in older Dieselmax engines. Confirm that the 5-amp fuse and dump relay are functional, as these are critical for forward motion. Have your dealer verify the exact serial range specifications and any recall alerts associated with the machine's PIN.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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