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Cat Soil Compactors are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to operate more efficiently and safely. Representing a long-standing commitment to quality and performance, this rugged, powerful machine is designed and built for heavy-duty compaction and dozing operations. Focused on helping our customers succeed, we have continued to build upon each new series. The 815 continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

Cat Specs


Transmission Type
Cat Planetary Power Shift
Travel Speeds - Reverse - First
4.5 mile/h
Travel Speeds - Forward - Second
7.7 mile/h
Travel Speeds - Reverse - Second
8.5 mile/h
Travel Speeds - Forward - Third
11.3 mile/h
Travel Speeds - Reverse - Third
11.4 mile/h
Travel Speeds - Forward - First
3.9 mile/h

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit
Pilot operated LS valve with EH
Relief Valve Setting - Lift/Tilt
3190 psi

Service Refill Capacities

14.8 gal (US)
Hydraulic Tank Only
19.8 gal (US)
Engine Crankcase
5.3 gal (US)
Differential - Final Drives - Rear
17.2 gal (US)
All non-road Tier 4 Final and Stage V diesel engines are required to use: – Ultra Low Sulfur Diesel (ULSD) fuels containing 15 ppm for EPA and 10 ppm for EU (mg/kg) sulfur or less. Biodiesel blends up
Fuel Tank
132.1 gal (US)
Differential - Final Drives - Front
17.2 gal (US)


Planetary – Fixed
Planetary – Oscillating
Oscillation Angle

Dimensions (Approximate)

Height - Top of Beacon
12.9 ft
Height - Top of Exhaust Pipe
11.1 ft
Hitch to Centerline of Front Axle
5.5 ft
Height - Top of Hood
8.6 ft
Wheel Base
11 ft


9720 lb
Drum Width
39 ft
Outside Diameter
55.6 ft
Tips per Wheel
Drum Diameter
40.5 ft
Width - Over Drums
127.7 ft

Hydraulic System - Steering

Steering System - Pump
Piston – Variable Displacement
Steering System - Circuit
Pilot, Load Sensing

Braking System

Service Brakes
Single Disc Wet (Enclosed) 2 WHL
Parking Brake
Drum and Shoe, Spring Applied, Hydraulic Released