Bulldozer Undercarriage and Blade Maintenance, Checks and Costs
A practical field ready guide to dozer undercarriage and blade care, with daily checks, track tension, wear cues, and building your own cost per hour.

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John Deere 850K WLT crawler dozer specifications: type Crawler Dozer, horsepower 152.9 kW, operating weight 20347.2 kg, pump flow 174.1 LPM.
| Specification | Metric | Imperial |
|---|---|---|
| Type | Crawler Dozer | |
| Horsepower | 152.9 kW | 205 HP |
| Operating Weight | 20347.2 kg | 44858 lbs |
| Pump Flow | 174.1 LPM | 46 GPM |
| Engine Manufacturer | John Deere | |
| Engine Model | PowerTech PSS 6068 | |
| Net Power | 152.9 kW | 205 HP |
| Number of Cylinders | 6 | |
| Displacement | 6800.6 cc | 415 cu in. |
| Max Torque | 915.2 N-m | 675 lbs/ft |
| Power Measured RPM | 1800 RPM | |
| Torque Measured RPM | 1500 RPM | |
| Transmission Type | Hydrostatic | |
| Number of Forward Gears | 1 | |
| Number of Reverse Gears | 1 | |
| Max Speed Forward | 10.1 km/h | 6.3 mph |
| Max Speed Reverse | 10.1 km/h | 6.3 mph |
| Ground Pressure | 0.4 bar | 5.8 psi |
| Fuel Capacity | 355.8 l | 94 gal |
| Hydraulic Capacity | 174.1 l | 46 gal |
| Pump type | Piston | |
| Hydraulic Pump Flow | 174.1 LPM | 46 GPM |
| Relief Valve Pressure | 249.9 bar | 3625 psi |
| Width Over Track | 401.3 cm | 158 in. |
| Length without Blade | 402.3 cm | 158.4 in. |
| Track Gauge | 2682.2 cm | 1056.0 in. |
| Ground Contact Area | 127131.1 cm³ | 7758 cu in. |
| No of Carrier Rollers Per Side | 2 | |
| No of Shoes Per Side | 45 | |
| No of Track Rollers Per Side | 8 | |
| Shoe Size | 76.2 cm | 30 in. |
| Weight (Operating) | 20347.2 kg | 44858 lbs |
| Track Pitch | 20.3 cm | 8 in. |
Source: heavyequipments.net archive (imported 2026-10). Values may vary by variant and production year; seller claims are shown separately on the listing page.
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