Sky Trak published this 412-page service training manual for the 3606 rough-terrain material handler under factory document number 8990300; this Sky Trak 3606 service training PDF is that book. Hydraulics claim close to a third of it: pressure diagnosis, pump and reservoir service, valves and manifolds, cylinders, and circuit schematics that trace oil from pump through each circuit. Wiring harness diagrams, fuse and relay layouts, and the start and charging circuits fill nearly a quarter more, with separate chapters for the Clark-Hurth T 12000 transmission and the Perkins and Cummins engines. Set the inner boom to extend 2.25 to 2.75 in. (57 to 70 mm) beyond the intermediate section, then torque the retract chain locknut to 35 to 40 lb/ft. On site it is just you, the machine, and nobody to ask. Serial number locations for the machine, transmission and both engines help you order the right part the first time, and bookmarks take you straight to any chapter.
What's Inside This Sky Trak 3606 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-16 | Owners/Operators Manual, Accident Prevention Tags, Safety Instructions (Personal Hazards, Equipment Hazards, Operational Hazards), Safety Decals |
| General Information, Specifications, and Maintenance | 17-60 | Replacement Parts and Warranty Information, Serial Number Locations, Torque Values, Fluids, Lubricants and Capacities, Cleaning, Replacement, Hoses and Tubes |
| Boom | 61-86 | Boom Assembly, Quick-Attach Assembly, Specifications, Troubleshooting |
| Cab, Covers and Mirrors | 87-110 | Serial Number Decal, Cab Replacement, Cab Covers and Guards |
| Axles, Wheels and Tires | 111-124 | Axle Assemblies, Wheels and Tires |
| Transfer Case and Drive Shafts | 125-134 | Transfer Case, Drive Shafts, Specifications, Troubleshooting |
| Transmission: Clark-Hurth T 12000 | 135-146 | Transmission Serial Number, Transmission Specifications, Towing a Disabled Vehicle, Transmission Maintenance, Transmission Replacement, Transmission Troubleshooting |
| Engine: Perkins 1004 Series | 147-170 | Perkins Engine Serial Number, Perkins Specifications and Maintenance Information, Perkins Engine Standard Practices, Perkins Engine Cooling System, Perkins Engine Electrical System |
| Engine: Cummins 4BT3.9 | 171-194 | Cummins Engine Serial Number, Cummins Specifications and Maintenance Information, Cummins Engine Standard Practices, Cummins Engine Cooling System, Cummins Engine Electrical System |
| Hydraulic System | 195-318 | Hydraulic Pressure Diagnosis, Hydraulic Fluid, Hoses, Tube Lines, Fittings, Etc., Hydraulic Reservoir, Hydraulic System Pump |
| Electrical System | 319-412 | Service Warnings, Effective Ground Connections, Wiring Harnesses, Fuses and Relays, Engine Start Circuit, Charging Circuit, Electrical System Components |
Every system also includes introduction.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Retract chain locknut torque | 35-40 lb/ft (47,5 to 54,2 Nm) | p. 73 |
| Boom hoist/lower cylinder counterbalance valve rating | 4000 psi | p. 199 |
| Pop-off emergency relief valve port relief rating | 3750 psi | p. 199 |
| Retract chain anchor bolt torque | 31 lb/ft (42 Nm) | p. 75 |
| Inner to intermediate boom distance | 2.25"-2.75" (57-70 mm) | p. 73 |
| Front outer boom to intermediate boom top wear pad gap | 0.07"-0.13" (1,8mm-3,3mm) | p. 75 |
| Boom extension distance | 10 feet (9 m) | p. 83 |
| Hoist/lower cylinder rod locknut torque | 1550-1750 lb/ft (2102-2373 Nm) | p. 291 |
| Hoist/lower cylinder counterbalance valve torque | 45-50 lb/ft (61-68 Nm) | p. 291 |
| Attachment tilt cylinder hydraulic circuit pressure | 3200 psi ± 100 psi (220,6 ± 7 bar) | p. 284 |
| Wheel lug nut torque | 370 lb/ft (500 Nm) | p. 24 |
| Main system relief pressure | 3,500 +/- 100 psi (241,5 Bars) | p. 24 |