Part of the Case Repair Manuals.
Hunting for a Drott 80 service manual PDF that actually came from the factory? This 106-page manual (OEM #S406162) covers the Drott 80 and 80 CRUZ-AIR excavators from the swing mechanism to the planetary drive axle. Inside you get wiring harness diagrams, upper and lower hydraulic schematics, exploded views of major assemblies, and a troubleshooting section that walks the pumps, control valves, swing circuit, and steering one fault at a time. Scheduled maintenance charts, Maxibrake air system service, and torque tables for grade five and eight capscrews round it out. Torque the planetary wheel hub nuts to 450-500 ft./lbs. and hold the center post to no more than 12 ft./lbs. Your Drott is older than most mechanics working on it; forum guesses won't cut it. Bookmarked PDF that opens on any device, so bring your tablet to the machine and start wrenching.
What's Inside This Drott 80, 80 CRUZ-AIR Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 7-10 | Warranty, Nomenclature, Parts and Service Information, Identification Plate |
| Scheduled Maintenace | 11-24 | |
| Electrical | 25-32 | Charging Circuit, Circuit Protector, Collector Ring, Wiring Harnesses, Micro Switches, Solenoids |
| Drive Controls and Drive Lines | 33-46 | General, Trouble Shooting Shift Linkage, Transmission - Forward-Reverse, Torque Converter, Single Reduction Drive Unit, Planetary Drive Axle |
| Engine and Throttle Linkage | 47-50 | RPM Specifications, Accelerator Linkage Adjustment, Bleeding Accelerator Hydraulic System |
| Swing Mechanism | 51-54 | Swing Brake, Swing Reducer, Swing Reducer Mounting Plate |
| Air System | 55-64 | Maxibrake Service and Maintenance, Air Reservoir, Check Valves |
| Hydraulic System | 65-102 | General, Reservoir, Pumps, Orbitrol, Center Swivel, Control Valves, Load-Hold Check Valves, Relief Valves |
| Torque Charts | 103-106 | Grade Five and Eight or Better Capscrews, Swivel Fittings |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Planetary Wheel Hubs nut torque | 450-500 ft./lbs. | p. 20 |
| Center post torque | 12 ft./lbs. | p. 23 |
| Engine air cleaner replacement interval | 500 hours | p. 21 |
| Battery voltage | 12 volts | p. 24 |
| Battery maintenance interval | 50 hours | p. 24 |
| Recommended Tire Pressure | 55 psi | p. 24 |
| Transmission Clutch Oil Pressure | 240-280 PSI | p. 37 |
| GMC 8V-53 Stall Speed | 2000 RPM | p. 35 |
| Cummins 8V-785 Stall Speed | 2100 RPM | p. 35 |
