Specification sheetIssued 4 November 2026
Cat · rigid dump truck
Cat 785
Current Cat 785 (build 08, global; 3512E fuel-optimized, Tier 4 Final optional), 33.00 R51 tyres; dimensions with the MSD II body, capacities with the HP body.
USAGlobal
- Payload (nominal)
- 143 t
- power
- 1,125 kW (1,509 hp)
- machine operating weight
- 249,476 kg
- Body capacity (SAE 2:1 heaped)
- 110 m³
- Overall length
- 11.957 m
- Overall width
- 7.562 m
- Overall height (canopy)
- 6.035 m
- Wheelbase
- 5.18 m
- Loading height (empty)
- 5.299 m
- Dump height (body raised)
- 12.032 m
- Ground clearance
- 1.004 m
- Height to top of ROPS
- 5.208 m
- Overall body length
- 11.985 m
- Inside body length
- 8.318 m
- Rear axle to tail
- 3.829 m
- Dump clearance
- 1.128 m
- Rear sidewall height
- 0.874 m
- Inside body depth (maximum)
- 2.79 m
- Operating width
- 7.535 m
- Centre line front tyre width
- 4.85 m
- Engine guard clearance
- 1.038 m
- Outside body width
- 6.714 m
- Inside body width
- 6.01 m
- Rear axle clearance
- 0.99 m
- Centre line rear dual tyre width
- 4.285 m
- Overall tyre width
- 6.277 m
4
16
19
5
9
12
7
1
2
3
6
8
10
11
13
14
15
17
18
20
21
22
Weight
- Payload (nominal)
- 143 t
- Gross machine operating weight
- 249,476 kg
- Chassis weight (33.00 R51 tyres; with full fuel and fluids)
- 85,156 kg
- Body weight (Unlined HP body)
- 20,927 kg
- Weight distribution, empty (front/rear)
- 48% / 52%
- Weight distribution, loaded (front/rear)
- 33% / 67%
Body
- Body capacity (SAE 2:1 heaped) (HP body, 100% fill factor)
- 110 m³
- Body capacity (struck) (HP body)
- 84 m³
- Hoist pump flow (High idle)
- 847 L/min
- Body raise time (High idle; lower (float) 15.6 s)
- 15.0 s
Engine
- Engine model
- Cat 3512E
- Emissions
- Fuel optimized; U.S. EPA Tier 4 Final / EU Stage V available for applicable markets
- Gross power (SAE J1995:2014, at 1,650 rpm)
- 1,193 kW (1,600 hp)
- Net power (SAE J1349:2011)
- 1,125 kW (1,509 hp)
- Displacement
- 58.6 L
- Bore x stroke
- 170 mm x 215 mm
Performance
- Top speed (Loaded, 6th gear, 33.00 R51 tyres)
- 57.2 km/h
- Turning diameter (ISO 7457:1997)
- 29.4 m
- Steering angle
- 25°
Transmission
- Transmission
- 6F/1R
- Total reduction ratio (Planetary 10.83:1)
- 22.75:1
Tyres
- Tyres
- 33.00 R51 (standard for the published speeds); 36.00 R51 optional
Service capacities
- Fuel tank
- 1,552 L
- DEF tank
- 136 L
- Cooling system
- 476 L
- Engine oil, with filter (Crankcase)
- 204 L
- Differential and final drives
- 527 L
- Steering system, with tank
- 117 L
- Brake/hoist system, with tank
- 541 L
- Torque converter/transmission system (Includes sump)
- 175 L
Service intervals
- Hydraulic filters
- 1,000 hours
- Coolant
- 12,000 hours