Caterpillar 816B
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 816B is a specialized landfill compactor designed for high-efficiency waste compaction and material spreading. This machine belongs to the heavy earthmoving class, featuring a turbocharged Caterpillar 3306 engine with 640.8 cubic inches of displacement producing 235 horsepower (hp). The configuration includes a 12-foot (3.66 m) wide blade with a height of 75.4 inches (1.91 m) and an operating weight of approximately 45,792.3 lb (20,771 kg). It is part of the long-standing 816 lineage, which has served as an industry standard for waste management since 1972.
Across its production generations, the 816B introduced improved guarding, updated cab ergonomics with membrane switch panels, and enhanced airflow technology to extend filter life. The machine remains highly relevant in the used parts and machinery market due to its heavy-duty main structures designed for multiple lifecycles and rebuild. Its reliance on the robust 3306 engine series makes it a durable choice for fleet owners seeking reliable performance in landfill and construction environments.
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 816B specifications
Engine
| Model | 3306 |
| Gross Power | 235 hp |
| Net Power | 216 hp |
| Displacement | 640.8 cu in |
| Cylinders | 6 |
| Aspiration | turbocharged |
Weights
| Operating Weight | 45,792.3 lb |
Dimensions
| Length With Blade On Ground | 23.2 ft |
| Width Over Wheels | 10.96 ft |
| Height To Top Of Cab | 13.26 ft |
| Wheelbase | 11 ft |
| Ground Clearance | 1.61 ft |
| Blade Height | 75.4 in |
| Blade Width | 12 ft |
| Front Wheels Drum Diameter | 51.2 in |
Performance
| Max Speed | 22 mph |
| Transmission Type | Cat. Planetary powershift |
| Forward Gears | 4 |
| Reverse Gears | 4 |
Service capacities (summary)
| Fuel Capacity | 122.1 gal |
| Hydraulic System Fluid Capacity | 35.4 gal |
| Engine Oil Capacity | 7.7 gal |
| Cooling System Fluid Capacity | 11.7 gal |
| Transmission Fluid Capacity | 15.9 gal |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
816B fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase | 29.15 L (7.7 gal) | Cat DEO (SAE 15W-40 or SAE 10W-30); use SAE 10W-30 if ambient temperature is between -18°C (0°F) and 40°C (104°F). For extreme cold, use SAE 0W-40. |
| Cooling System | 44.29 L (11.7 gal) | Cat ELC (Extended Life Coolant) |
| Fuel Tank | 462.22 L (122.1 gal) | N/A |
| Transmission/Powertrain | 59.81 L (15.9 gal) | Cat TDTO (Transmission/Drive Train Oil) |
| Hydraulic System and Tank | 134.01 L (35.4 gal) | Cat HYDO Advanced 10 (for cold to moderate temperatures) or Cat HYDO Advanced 30 (for moderate to hot temperatures) |
| Grease | N/A | Varies by application: Cat Multipurpose Grease (low-load/low-speed), Cat Advanced 3Moly Grease (medium-load/medium-speed), or Cat Ultra 5Moly Grease (high-load/high-speed) |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 816B maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 816B beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Caterpillar S.O.S Services to monitor engine oil, hydraulic fluid, and coolant. Analyze wear metals like iron or copper and check for silicon contamination from dirt ingestion. For the 816B, monitoring hydraulic oil particle counts is critical to prevent pump failure. Use Cat HYDO Advanced oils to maximize drain intervals and ensure additive compatibility remains above 90% to avoid sludge formation.
Corrective & Common Repairs
Address frequent issues such as hydraulic hose abrasions, leaks, or cracked fittings. Monitor the turbocharger for oil leaks or exhaust smoke. If engine oil appears milky, inspect for coolant contamination indicating head gasket failure. Ensure all electrical components, including membrane switch panels and keyed ignitions, are functional. Replace worn cutting teeth on the blade to maintain effective waste spreading capabilities.
Overhaul & Rebuild Points
The 816B is engineered for multiple lifecycles through structural rebuilds. Focus overhaul efforts on the heavy-duty main structures, transmission, and final drives. Evaluate the 3306 engine for piston, ring, or bearing wear during major intervals. When rebuilding, inspect all pins, bushings, and articulation joints for excessive play to restore machine rigidity and prevent secondary damage to mating components.
Seasonal & Environment Servicing
In dusty or quarry environments, check air filters daily and clean radiator fins frequently. Shorten engine oil intervals to 200 hours if operating in extreme heat. For machines used in cold climates, utilize Cat Arctic Platinum Grease and specialized cold-weather engine oils. Ensure the cooling system is protected against corrosion with proper SCA levels to prevent liner pitting during seasonal temperature shifts.
816B fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 110-0 | Engine Coolant Temperature — Above Normal | Low coolant level, thermostat failure | Inspect cooling system, refill coolant, test thermostat |
| 110-3 | Engine Coolant Temperature Sensor — Voltage High | Open circuit or sensor failure | Check wiring; replace sensor if confirmed 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; test speed sensor and tone ring |
| 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.
816B attachments & work tools
Blades
Standard configuration features a 12 ft (3.66 m) width blade with a height of 75.4 in (1.92 m). The design is optimized for waste spreading and material management.
Drums and Wheels
The machine utilizes drum configurations including combination, plus tips, paddle tips, and chopper tips. Drum width is 40 in (1.02 m) with diameters varying by configuration/series, such as 51.2 in (1.30 m).
Mounting and Guarding
Features include improved structure engineering and frame deflectors to divert debris away from the hood enclosure. New captive hinges on service doors are used to prevent unintentional opening.
Hydraulic and Service Systems
The system utilizes a pilot-operated load-sensing valve with EH for lift/tilt functions. Service points for hydraulic oil, coolers, and fuel coolers are grouped to minimize maintenance time.
All 816B assemblies by section
Every catalogued assembly group for the Caterpillar 816B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Basic Engine
9n-5760 Damper Gp
| 9N***60 | Damper Group | 1 |
Engine Arrangement
284-3288 Conversion Ar-Engine
| 28***88 | Conversion Ar-Engine | 1 |
Fuel System
7c-8993 Fastener Gp-Fuel Inj Pump
| 7C***93 | Fastener Group-Fuel Inj Pump | 1 |
111-5162 Control Gp-Fuel Ratio
| 11***62 | Control Group-Fuel Ratio (Basic) | 1 |
2w-2410 Governor Gp
| 2W***10 | Governor Group | 1 |
4p-9827 Pump Gp-Fuel Injection
| 4P***27 | Pump Group-Fuel Injection | 1 |
111-3769 Pump Gp-Fuel Injection
| 11***69 | Pump Group-Fuel Injection | 1 |
115-7536 Pump Gp-Gov & Fuel Inj
| 11***36 | Pump Group-Gov & Fuel Inj | 1 |
7c-8992 Seal Gp-Pump
| 7C***92 | Seal Group; -Fuel | 1 |
8n-7276 Torque Control Gp
| 8N***76 | Torque Control Group | 1 |
Service Equipment And Supplies
284-3300 Kit-Engine Parts
| 28***00 | Kit-Engine Parts | 1 |
284-7809 Kit-Engine Parts
| 28***09 | Kit-Hardware; (Emission Upgrade) | 1 |
Frequently asked questions
What engine powers the Caterpillar 816B?
The 816B is powered by a turbocharged Caterpillar 3306 engine with a displacement of 640.8 cubic inches.
What is the operating weight of this compactor?
The operating weight is approximately 45,792.3 lb (20,771 kg).
What model replaced the 816B?
The source text identifies the 816F as a subsequent model in the Caterpillar compactor lineup.
What 816B owners discuss
What are the primary engine specifications and power output for the Caterpillar 816B?
What are the common mechanical concerns regarding Caterpillar engines in this class?
What hydraulic and transmission fluid capacities should be monitored on the 816B?
What are the typical electrical and sensor-related issues found in Caterpillar heavy equipment?
What should be checked when inspecting a used Caterpillar 816B for purchase?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Caterpillar 816B. Related factory variants of the same model family:
Need a specific 816B part?
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