Caterpillarearthmoving compactorlandfill compactor
Caterpillar 826G II
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 826G II is a heavy-duty landfill compactor engineered for high-productivity waste management. This machine belongs to the earthmoving compactor class and is powered by the Cat 3406E ATAAC diesel engine, delivering 340 hp (254 kW) gross power. The unit features an operating weight of approximately 76,805 lb (34,839 kg). It is configured with a straight blade, oscillating rear axle, and specialized trash protection systems to handle 100 percent engine load applications.
The 826G II represents a refined evolution in the 826 series, focusing on improved operator comfort through Command Control steering and integrated transmission controls. In today's used equipment market, this model is highly valued for its specialized landfill features, such as the anti-wrap axle guard system and durable tip patterns. For parts procurement and fleet maintenance, it remains a critical asset due to its proven powertrain durability and the availability of high-wear components like self-cleaning chopper wheels and replaceable blade edges.
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.
Caterpillar 826G II specifications
Engine
| Model | Cat 3406E ATAAC Diesel |
| Gross Power | 380 hp (283 kW) |
| Net Power (ISO 3046-2) | 340 hp (253 kW) |
| Displacement | 893 in³ (14.6 l) |
| Cylinders | 6 |
| Bore x Stroke | 5.4 in (137 mm) x 6.5 in (165 mm) |
| Torque Rise | 28 % |
Weights
| Operating Weight | 81,498 lb (36,967 kg) |
Dimensions
| Length - With Blade on Ground | 27.13 ft (8268 mm) |
| Width - Over Wheels | 12.47 ft (3800 mm) |
| Width - Over End Bits - Blade | 14.77 ft (4502 mm) |
| Height - Top of Cab with A/C | 13.75 ft (4191.1 mm) |
| Height - Top of Exhaust Pipe | 12.57 ft (3830 mm) |
| Height - Top of Hood | 8.86 ft (2700.51 mm) |
| Wheelbase | 12.14 ft (3700 mm) |
| Ground Clearance - Counterweight | 3.38 ft (1032.5 mm) |
| Centerline of Rear Axle to Edge of Counterweight | 8.61 ft (2624 mm) |
| Centerline of Rear Axle to Hitch | 6.07 ft (1850 mm) |
| Turning Radius - Inside | 10.58 ft (3221 mm) |
| Turning Radius - Outside | 24.06 ft (7333 mm) |
Performance
| Travel Speed Forward - 1 | 3.6 mph (5.8 km/h) to 3.9 mph (6.3 km/h) |
| Travel Speed Forward - 2 | 6 mph (9.7 km/h) to 7 mph (11.3 km/h) |
| Travel Speed Reverse - 1 | 4.1 mph (6.6 km/h) to 4.7 mph (7.6 km/h) |
| Travel Speed Reverse - 2 | 6.6 mph (10.6 km/h) to 8.4 mph (13.5 km/h) |
| Lift Speed at Rated RPM | 1.42 ft/s (440 m/s) to 1.4 ft/s (0.4 m/s) |
| Vane Pump Output at 2,000 rpm and 6900 kPa | 26.5 gpm (102 L/min) |
| Relief Valve Setting | 3500 psi (24100 kPa) |
Service capacities (summary)
| Fuel Tank | 166.5 gal (US) (630 l) |
| Hydraulic Tank | 23.2 gal (US) (88 l) to 23.3 gal (US) (88.2 l) |
| Cooling System | 21.4 gal (US) (81 l) to 21.9 gal (US) (83 l) |
| Crankcase | 9 gal (US) (34 l) to 9 gal (US) (34.1 l) |
| Transmission | 16.4 gal (US) (62 l) to 16.4 gal (US) (62.1 l) |
| Differential - Final Drives - Front | 23.8 gal (US) (90 l) to 23.8 gal (US) (90.1 l) |
| Differential - Final Drives - Rear | 23.8 gal (US) (90 l) to 23.8 gal (US) (90.1 l) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
826G II fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase | 34.1 L (9 gal) | Cat DEO-ULS (for Tier 4 engines with aftertreatment); SAE 10W-30 preferred for ambient temperatures between -18°C and 40°C |
| Cooling System | 81 L to 83 L (21.4 gal to 21.9 gal) | Not specified |
| Fuel Tank | 630 L (166.5 gal) | Not specified |
| Transmission/Powertrain | 62 L (16.4 gal) | Cat TDTO; SAE 10W/30/50 |
| Final Drives (Front) | 90 L to 90.1 L (23.8 gal) | Cat TDTO |
| Final Drives (Rear) | 90 L to 90.1 L (23.8 gal) | Cat TDTO |
| Hydraulic System and Tank | 88 L to 88.2 L (23.2 gal to 23.3 gal) | Cat HYDO Advanced; SAE 10W for cold to moderate temperatures, SAE 30W for moderate to hot temperatures |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 826G II maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 826G II beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Cat S.O.S Services to monitor engine oil, hydraulic fluid, and transmission oil for wear metals like iron or copper. Analyze coolant for pH levels and SCA concentration to prevent liner pitting. Regular hydraulic oil sampling detects particle counts and oxidation before pump failure occurs. Monitoring the air filter restriction indicator from the cab allows for timely element replacement, preventing dirt ingestion into the 3406E engine.
Corrective & Common Repairs
Monitor hydraulic hoses for cracks or abrasion to prevent high-pressure leaks. Inspect the transmission planetary components and clutch valves if shifting becomes erratic. Check the radiator and cooling system for debris buildup that can cause overheating. If hydraulic performance drops, inspect the suction screen and pump drive. Address any visible leaks at the axle seals or final drives immediately to avoid catastrophic component contamination.
Overhaul & Rebuild Points
Plan major interventions when measuring significant wear in the undercarriage or blade cutting edges. Evaluate the 3406E engine for turbocharger fatigue or compression loss during PM3 intervals. Transmission overhauls should be considered if planetary gear wear is detected via oil analysis. Structural inspections of the frame and blade welds are essential during PM4 to identify fatigue before cracks compromise the machine's integrity.
Seasonal & Environment Servicing
In dusty or quarry environments, increase air filter checks to daily and clean radiator fins frequently. For landfill operations, inspect the anti-wrap axle guards for wire or plastic entanglement. In cold climates, ensure the engine pre-heating systems are functional and check fuel quality for waxing. Use the electronic fan control to manage temperature fluctuations, ensuring the cooling system maintains optimal levels during high-load summer operations.
826G II common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 107-0266 | Filter Element-Cab Air | Air intake service | Check fitment → |
| 112-7448 | Filter Element-Cab Air | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
826G II fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 110-0 | Engine Coolant Temperature — Above Normal | Low coolant level or thermostat failure | Inspect cooling system and refill coolant |
| 110-3 | Engine Coolant Temp Sensor — Voltage High | Open circuit or sensor failure | Check wiring and replace sensor if faulty |
| 174-3 | Engine Fuel Temperature — Voltage Above Normal | Open circuit in sensor wiring | Inspect harness and replace sensor if necessary |
| 190-8 | Engine Speed — Abnormal Frequency | Speed sensor air gap, sensor failure, or tone ring damage | Check sensor gap and test speed sensor/tone ring |
| 2458-2 | DPF #1 Differential Pressure — Erratic | Plugged pressure ports or failing sensor | Clean pressure ports and test sensor |
| 41-3 | 8-Volt DC Supply — Voltage Above Normal | Short to power on 8V reference circuit | Inspect sensors sharing the 8V supply and isolate fault |
| 41-4 | 8-Volt DC Supply — Voltage Below Normal | Short to ground on 8V reference circuit | Disconnect sensors one at a time to locate short |
| 2348-9 | SAE J1939 Data Link #2 — Abnormal Update Rate | CAN bus wiring damage or termination fault | Check CAN wiring and measure termination resistance |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
826G II attachments & work tools
Straight Blade
The blade features a 14.8 ft (4511.1 mm) width over end bits and a 14.1 ft moldboard length. It includes self-sharpening end bits measuring 254 mm x 25 mm (10 in x 1 in) and reversible cutting edges of the same dimensions.
Wheels and Tips
Available configurations include Chevron-pattern chopper blades, Plus Tip wheels with abrasion resistant material, and Traction Tip wheels. Drum widths are approximately 4 ft (1.2 m) with diameters of 5.1 ft (1.55 m), while tip counts per wheel vary between 25 and 45 depending on the specific design.
Mounting and Hydraulic Systems
The machine utilizes a hydraulic system with armrest-mounted levers for low-effort implement control. The system features large capacity lift cylinders and uses XT-3 or XT-5 hoses with O-ring face seals.
Guarding and Protection
Optional Cat Anti-Wrap Axle Guard Systems protect final drives and seals from debris. The machine may also feature a cab bottom guard to protect hydraulic lines and wiring from flying waste.
All 826G II assemblies by section
Every catalogued assembly group for the Caterpillar 826G II. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Braking System
180-4003 Base Gp-Foot Brake -Rh Pedal
| 00***01 | Ring-Retaining | 2 |
| 11***76 | Harness As-Brake; (Right Ft Brake Base) | 1 |
| 11***52 | Pedal-Brake; (Right) | 1 |
180-4004 Base Gp-Foot Brake -Lh Pedal
| 00***01 | Ring-Retaining | 3 |
| 10***17 | Switch As-Limit; (Stop Light) | 1 |
| 11***52 | Pedal-Brake; (Right) | 1 |
180-4002 Control Gp-Foot Brake
| 00***01 | Ring-Retaining | 1 |
| 11***91 | Washer | 2 |
| 18***94 | Shaft Assem. | 1 |
169-8257 Control Gp-Foot Brake
| 09***49 | Bolt; (M8x1.25x40-mm) | 6 |
| 16***57 | Control Group-Foot Brake | 1 |
| 18***02 | Control Group-Foot Brake | 1 |
109-8193 Control Gp-Parking Brake
| 10***93 | Control Group-Parking Brake | 1 |
| 11***59 | Grommet | 1 |
| 11***30 | Cable As-Parking Brake Control | 1 |
Electrical And Starting System
3e-6328 Alarm Gp -Action
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
| 3E***65 | Wedge; (Receptacle Lock) (2 Pin) | 1 |
172-9391 Control Gp-Unprogrammed -Implement
| 10***52 | Screw-Pan Head; (8-32x0.375-In) | 1 |
| 13***26 | Washer; (4.52x8.28x0.76-mm Thk) | 1 |
| 17***91 | Control Group-Unprogrammed; -Traction Control-Transmission, Chassis-Automatic Retarder-Integrated Brake | 1 |
172-9389 Control Gp-Unprogrammed -Powertrain-Power Train
| 10***52 | Screw-Pan Head; (8-32x0.375-In) | 1 |
| 13***26 | Washer; (4.52x8.28x0.76-mm Thk) | 1 |
| 17***89 | Control Group-Unprogrammed; -Steering, Transmission | 1 |
3e-6389 Lamp Gp-Dome
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 3E***71 | Wedge; (Receptacle Lock) (3 Pin) | 1 |
| 3E***89 | Lamp Group-Dome; -With Switch-Cab, Rh, Lh | 1 |
147-0319 Lamp Gp-Flood
| 14***19 | Lamp Group-Flood; -Engine Work, Rh, Lh | 1 |
| 15***48 | Lens As; (Floodlight) | 1 |
| 15***50 | Body As-Lamp | 1 |
198-8845 Lighting Gp-Flood
| 11***17 | Bracket | 1 |
| 14***88 | Bracket As | 4 |
| 14***19 | Lamp Group-Flood; -Engine Work, Rh, Lh | 6 |
176-1602 Sensor Gp-Position
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 17***02 | Sensor Group-Position; -Accelerator Control | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
214-4863 Sensor Gp-Position
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 1 |
| 21***63 | Sensor Group-Position; -Rotary-Tc Impeller Clutch, Lh Pedal | 1 |
3e-0155 Switch Gp-Wiper
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 1 |
| 11***86 | Wiper Switch Assembly; (24-Volt)(Front/Intermittent) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
228-7910 Wiring Gp-Cab -Custom
| 09***68 | Washer; (5x16x1.2-mm Thk) | 8 |
| 09***49 | Bolt; (M8x1.25x40-mm) | 8 |
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
Frame And Body
219-5149 Hardware Gp-Rear Frame -Custom
| 15***54 | Block | 2 |
| 21***49 | Hardware Group-Rear Frame; -Custom | 1 |
| 9C***09 | Boss-Threaded; (M10x1.5-Thd)(M10x1.5-mm) | 2 |
Hydraulic System
214-4796 Control Gp-Electrohydraulic
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
186-1574 Control Gp-Joystick
| 14***74 | Handle Group-Modular; (Hoist) | 1 |
| 15***93 | Screw-Button Head; (M4x0.7x12-mm) | 2 |
| 15***77 | Washer; (4.445x9.525x1.092-mm Thk) | 14 |
230-9066 Control Gp-Joystick
| 14***74 | Handle Group-Modular; (Hoist) | 1 |
| 15***93 | Screw-Button Head; (M4x0.7x12-mm) | 2 |
| 15***77 | Washer; (4.445x9.525x1.092-mm Thk) | 14 |
219-5140 Lines Gp-Pilot -Custom
| 11***11 | Clamp | 2 |
| 12***49 | Hose As | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 1 |
9t-3096 Valve Gp-Check -Dead Engine Lower
| 20***02 | Valve Group-Check; (Park Brake Release) | 1 |
| 20***34 | Valve Group-Check; (Park Brake Release) | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
Operator Station
173-1028 Adjuster Gp-Seat
| 11***92 | Rod | 1 |
| 13***38 | Washer-Plastic; (13x31.7x0.8-mm Thk) | 2 |
| 13***44 | Latch Assem.; (Lh) | 1 |
187-3675 Air Conditioner Ar
| 11***27 | Air Conditioner Group | 1 |
| 13***70 | Lines Group-Heater | 1 |
| 13***74 | Lines Group-Air Conditioner | 1 |
115-0627 Air Conditioner Gp
| 06***93 | Grommet; (Rh) | 1 |
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
219-5156 Cab Ar-Enclosed Rops -Custom
| 10***93 | Control Group-Parking Brake | 1 |
| 10***96 | Wiper Group-Window | 1 |
| 11***10 | Sealing Group-Glass | 1 |
207-7875 Condenser & Mtg Gp-Refrigerant
| 09***64 | Grommet | 4 |
| 10***27 | Condenser Group-Refrigerant; -With Fans-Rops Mounted-Remote Mounted | 1 |
| 10***57 | Washer; (22x76.2x6-mm Thk) | 8 |
103-9527 Condenser Gp-Refrigerant
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***27 | Condenser Group-Refrigerant; -With Fans-Rops Mounted-Remote Mounted | 1 |
103-5526 Control Gp-Monitor Sys Dimmer
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 10***26 | Control Group-Monitor Sys Dimmer; -Backlight Dimmer | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 6 |
154-7443 Control Gp-Monitor
| 15***43 | Control Group-Unprgmed Monitor; -Caterpillar Monitoring System | 1 |
164-4237 Cover Gp-Dash
| 12***84 | Film-Instruction; (Engine Run, On, Off) | 1 |
| 16***37 | Cover Group-Dash; -Stic Steering | 1 |
| 17***91 | Cover | 1 |
179-3737 Door Gp-Cab
| 11***54 | Handle Assem. | 1 |
| 11***56 | Latch As-Rotary | 1 |
| 12***53 | Door As-Lh | 1 |
179-3738 Door Gp-Cab
| 11***53 | Handle Assem. | 1 |
| 11***55 | Latch As-Rotary | 1 |
| 12***52 | Door As-Rh | 1 |
219-5082 Duct & Filter Gp-Air -Custom
| 10***91 | Screw; (Flat Head) (No.6-20x0.5in) | 20 |
| 10***66 | Filter Element-Cab Air; (Standard Efficiency) | 1 |
| 10***08 | Duct Assem. (R. H.) | 1 |
219-5089 Installation Gp-Gov Control -Custom
| 09***67 | Pin-Clevis | 1 |
| 21***89 | Installation Group-Gov Control; -Custom | 1 |
| 21***90 | Floor Mat | 1 |
187-3689 Installation Gp-Radio
| 01***60 | Grommet | 1 |
| 12***84 | Cable Assem. | 1 |
| 13***22 | Plate | 1 |
201-9755 Liner Gp-Cab
| 10***43 | Seal; (32-cm Each) | 0 |
| 11***10 | Trim Assem. | 1 |
| 12***78 | Insulation | 1 |
131-1274 Lines Gp-Air Conditioner
| 10***93 | Valve As | 1 |
| 10***94 | Gasket | 1 |
| 10***95 | Valve As | 1 |
131-1270 Lines Gp-Heater
| 12***07 | Plate Assem. | 1 |
| 13***41 | Plate Assem. | 1 |
| 13***70 | Lines Group-Heater | 1 |
166-6928 Module Gp-Quad Gauge -Engine Coolant Temp, Transmission Oil Temp, Hydraulic Oil Temp, Fuel Level
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 16***28 | Module Group-Quad Gauge; -Engine Coolant Temp, Transmission Oil Temp, Hydraulic Oil Temp, Fuel Level | 1 |
| 8T***29 | Pin-Connector; (16-Ga To 18-Ga)(Throttle Position Sensor) | 6 |
190-3730 Module Gp-Speedometer & Tach
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 19***30 | Module Group-Speedometer & Tach; (Speed/Tachometer Module) | 1 |
| 3E***83 | Wedge-Receptacle Lock; (6-Pin) | 1 |
155-5789 Motor Gp-Window Wiper
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 15***89 | Motor Group-Window Wiper; -Rear | 1 |
| 8T***29 | Pin-Connector; (16-Ga To 18-Ga)(Throttle Position Sensor) | 5 |
155-5790 Motor Gp-Window Wiper
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 15***90 | Motor Group-Window Wiper; -Front | 1 |
| 8T***29 | Pin-Connector; (16-Ga To 18-Ga)(Throttle Position Sensor) | 5 |
144-2619 Mounting Gp-Cab
| 11***75 | Washer; (12-mm Thk) | 4 |
| 11***59 | Shroud (R. H.) | 1 |
| 11***24 | Shroud (L. H.) | 1 |
219-5157 Operator Ar -Custom
| 14***19 | Mounting Group-Cab | 1 |
| 21***89 | Installation Group-Gov Control; -Custom | 1 |
| 21***56 | Cab Ar-Enclosed Rops; -Custom | 1 |
178-0605 Pan Gp-Backrest
| 13***43 | Plate As-Lumbar | 1 |
| 17***52 | Retainer | 1 |
| 17***30 | Pan As-Backrest | 1 |
178-0604 Pan Gp-Backrest -Cloth
| 16***83 | Knob-Lumbar | 1 |
| 17***04 | Pan Group-Backrest; -Cloth, Lumbar | 1 |
| 17***05 | Pan Group-Backrest; -Lumbar | 1 |
187-3683 Panel Gp-Instrument -Upper
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 1 |
| 10***26 | Control Group-Monitor Sys Dimmer; -Backlight Dimmer | 1 |
219-5081 Panel Gp-Instrument -Custom
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 2 |
| 11***15 | Bezel; (Center)(Center) | 1 |
130-8176 Pedal Gp-Governor
| 12***31 | Cover | 1 |
| 13***76 | Pedal Group-Governor | 1 |
| 14***61 | Kit-Roller; (Foot Brake Control)(Governor Pedal) | 1 |
141-4645 Pedal Gp-Governor
| 13***76 | Pedal Group-Governor | 1 |
| 13***70 | Gasket | 1 |
| 14***45 | Pedal Group-Governor | 1 |
177-4935 Recliner Gp-Seat
| 03***14 | Bolt-Self Locking; (1/4unc X 1/2) | 1 |
| 10***67 | Washer-Hard; (7.2x25x2-mm Thk) | 1 |
| 16***46 | Spring | 1 |
187-3685 Rops Gp-Enclosed
| 10***00 | Glass; (Right Side, Rear) | 1 |
| 10***01 | Glass (Rear) | 1 |
| 10***02 | Glass; (Left Side, Rear) | 1 |
117-1410 Sealing Gp-Glass
| 11***10 | Sealing Group-Glass | 1 |
| 11***81 | Adhesive; (All Joints To Be Sealed) | 1 |
178-0606 Seat Gp -Fabric
| 0T***44 | Bolt (1.25" Long) | 1 |
| 17***37 | Spacer; (11.7x19.8x20.3-mm Thk)(Lh Seat Side) | 1 |
| 17***03 | Seat Group; (Fabric) | 1 |
178-0603 Seat Gp -Fabric
| 09***43 | Pin-Cotter | 2 |
| 11***06 | Cushion As | 1 |
| 13***99 | Pan Assem. | 1 |
200-3174 Seat Gp-Suspension -Fabric
| 16***89 | Block-Slider | 4 |
| 17***87 | Setscrew; (1/4-20-Thd) | 4 |
| 17***35 | Block Kit; (Includes Bolt, Washers, Blocks And Setscrews) | 1 |
219-5086 Support Gp-Hydraulic Control -Custom
| 09***49 | Bolt; (M8x1.25x40-mm) | 4 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 2 |
| 12***23 | Lever Assem. | 1 |
173-1905 Support Gp-Seat
| 16***10 | Bolt; (M10x1.5x70-mm) | 4 |
| 17***79 | Bracket As; (Rh) | 1 |
| 17***83 | Bracket As; (Lh) | 1 |
171-3897 Support Gp-Steering Control
| 01***02 | Lockwasher | 1 |
| 09***58 | Screw-Machine; (M6x1x14-mm) | 1 |
| 09***47 | Nut-Thin; (M16x2 Thd) | 1 |
219-5087 Suppression Gp-Sound -Custom
| 14***95 | Hose; (650-cm Each) | 0 |
| 16***79 | Plate Assem. | 2 |
| 16***80 | Plate | 1 |
191-2933 Suspension Gp-Seat -Air
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 14***26 | Film-Instruction; (Seat Adjustment) | 1 |
| 16***35 | Spring | 1 |
109-8196 Wiper Gp-Window
| 10***96 | Wiper Group-Window | 1 |
| 12***37 | Plate-Wiper | 1 |
| 14***95 | Hose; (650-cm Each) | 0 |
Power Train
4e-8413 Control Gp-Stic
| 17***13 | Control Group-Stic | 1 |
| 4E***20 | Base | 1 |
| 4E***27 | Housing | 1 |
177-4113 Control Gp-Stic
| 09***62 | Washer; (Hard) (3.4x7x0.8mm Thk) | 2 |
| 10***29 | Actuator | 1 |
| 10***73 | Grip | 1 |
187-0738 Lock Gp-Stic Control
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
| 12***74 | Tube-Heat Shrink; (5.72-mm Dia)(950-cm) | 0 |
| 12***67 | Pin-Connector; (14-Ga To 16-Ga)(14-Ga Wire) | 1 |
Steering System
141-4940 Control Gp-Steering -Stic
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***77 | Bolt-Socket Head; (M10x1.5x45-mm) | 1 |
| 13***07 | Elbow-45 Degree | 2 |
219-5148 Lines Gp-Steering -Custom
| 11***49 | Fitting As; (Quick Disconnect) | 1 |
| 11***51 | Elbow | 1 |
| 11***63 | Bracket Assem. | 1 |
219-5139 Lines Gp-Steering Neutralizer -Custom
| 11***75 | Valve Group-Check; -Steering Quad-Steering Quad, Ccs | 1 |
| 12***51 | Block | 2 |
| 14***71 | Valve Group-Steering Neutralizer; -Stic Steering | 2 |
2q-8040 Steering Ar-Stic -Custom
| 11***39 | Guard As | 1 |
| 17***01 | Plate As | 1 |
| 18***84 | Operator Group | 1 |
176-9369 Valve Gp-Check -Steering
| 16***54 | Seal-O-Ring | 1 |
| 17***69 | Valve Group-Check; -Steering | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
176-9371 Valve Gp-Check -Steering
| 16***54 | Seal-O-Ring | 1 |
| 17***71 | Valve Group-Check; -Steering | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
111-7775 Valve Gp-Check -Steering Quad
| 11***75 | Valve Group-Check; -Steering Quad-Steering Quad, Ccs | 1 |
| 17***69 | Valve Group-Check; -Steering | 2 |
| 17***71 | Valve Group-Check; -Steering | 2 |
143-2855 Valve Gp-Pilot -Stic Steering
| 10***55 | Handle | 1 |
| 10***56 | Bracket | 1 |
| 10***70 | Link-Connecting | 2 |
147-1238 Valve Gp-Pilot Cartridge
| 09***19 | Seal-O-Ring (Id=15.80mm) | 1 |
| 10***18 | Shim; (.020in Thk) | 1 |
| 10***19 | Shim; (0.762-mm Thk) | 1 |
147-1237 Valve Gp-Pilot Cartridge
| 10***07 | Spring | 1 |
| 10***10 | Plunger | 1 |
| 14***37 | Valve Group-Pilot Cartridge; -Steering | 1 |
114-1267 Valve Gp-Pressure Reducing
| 11***67 | Valve Group-Pressure Reducing; -Steering-Pilot | 1 |
| 2M***80 | Seal--To Connector Pump Outlet | 1 |
| 5P***99 | Ring-To Clutch Piston Pins | 1 |
9t-7418 Valve Gp-Relief
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
| 7X***76 | Ring-Back-Up | 2 |
| 8C***97 | Seal-O-Ring; (13.1mm Id) | 1 |
4t-1860 Valve Gp-Shuttle -Ball Resolver
| 1M***18 | Ball | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
| 4T***60 | Valve Group-Shuttle; -Ripper Lift-Ripper Tilt-Blade Tilt-Blade Lift | 1 |
127-5500 Valve Gp-Steering
| 10***71 | Retainer | 1 |
| 11***67 | Valve Group-Pressure Reducing; -Steering-Pilot | 1 |
| 11***01 | Cover | 1 |
146-7571 Valve Gp-Steering Neutralizer
| 13***49 | Seal | 1 |
| 14***71 | Valve Group-Steering Neutralizer; -Stic Steering | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 1 |
826G II serial number reference
The PIN plate is a durable metal identification plate usually riveted to the machine frame. For landfill compactors and dozers, check the rear of the left side frame, near the cab or above the final drive. Multiple plates may exist (engine, machine, components); use only the machine PIN for model identification.
| Prefix | Identifies | Notes |
|---|---|---|
| 11A | 826G II | Identifies the 826 Landfill Compactor configuration. This prefix is associated with the 826 series, including the 826G II. Verify specific build year and sub-series differentiation with your dealer. |
Frequently asked questions
What engine is used in the Caterpillar 826G II?
The machine is equipped with a Cat 3406E ATAAC diesel engine, providing 254 kW (340 hp) gross power.
What is the operating weight of this compactor?
The operating weight is approximately 76,805 lb (34,839 kg).
What model replaced the 826G II?
Information regarding a direct successor is not specified in the provided documentation; however, the 826K is listed as a related heavy earthmoving model.
What 826G II owners discuss
What are the primary engine and power specifications for the 826G II?
The machine is powered by a Cat 3406E ATAAC Diesel engine. It produces 380 hp gross power and 3-level warning monitoring via the Caterpillar Monitoring System. The engine features a displacement of 893 cu in (14.6 l) with a 5.4 in (137.16 mm) bore and 6.5 in (165.1 mm) stroke.
What hydraulic system behaviors or features should be expected?
The system utilizes an electronically controlled, hydraulically driven, on-demand fan to manage engine coolant, transmission oil, and hydraulic oil temperatures. The hydraulic system provides low-effort control with armrest-mounted levers sending electrical signals to a pilot valve. Relief valve settings are rated at 3500 psi (24132.4 kPa). A vane pump output of 26.5 gal/min (100.3 l/min) is observed at 2,000 rpm and 6900 kPa (1,000 psi).
What are the typical wear patterns for the wheels and blades?
For landfill applications, the machine uses chevron-pattern or traction tip wheels. The plus-shaped design of the tips is intended to reduce plugging and lower replacement costs; these tips are guaranteed for 10,000 hours or four years of wear life. The straight blade features reversible cutting edges with a width of 254 mm (10 in) and thickness of 254 mm (10 in).
What electrical or sensor-related monitoring is available on this model?
The 826G II Monitoring System includes gauges for fuel level, engine coolant temperature, hydraulic oil temperature, and transmission oil temperature. The center panel contains a tachometer/speedometer. The system provides diagnostics via a diagnostic connector and uses electronic control to monitor the air inlet manifold and cooling system.
What should be checked when buying a used 826G II?
Inspect the radiator and cooling system for trash resistance and check the condition of the hydraulic cylinders, specifically looking for leaks. Verify the integrity of the axle guards if the machine was used in landfill applications to protect against wire or plastic damage. Check the engine oil level; milky oil indicates coolant contamination and potential head gasket failure.
What are the recommended fluid specifications for maintenance?
For engine lubrication, use Cat DEO or DEO-ULS. For hydraulic systems, use HYDO Advanced; avoid generic oils to prevent valve and pump damage from additive incompatibility. Transmission systems require TDTO. Always refer to Caterpillar Machine Fluids Recommendations (SEBU6250) for exact requirements.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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