June 2007GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056 Part No. 97487TABLE OF CONTENTSxSection 4 Rev Repair ProceduresIntroduction .................................................................................................. 4 - 1C Boom Components1-1 Boom Angle Limit Switch (all models except GTH-636) ..................... 4 - 21-2 Boom ................................................................................................. 4 - 31-3 Boom Lift Cylinder ............................................................................ 4 - 151-4 Boom Extension Cylinder ................................................................. 4 - 171-5 Fork Level Cylinder .......................................................................... 4 - 181-6 Fork Rotate Cylinder (option) ........................................................... 4 - 20B Operator's Compartment2-1 Operator's Compartment .................................................................. 4 - 232-2 Machine Controls ............................................................................. 4 - 32C Fuel and Hydraulic Tanks3-1 Fuel Tank ......................................................................................... 4 - 383-2 Hydraulic Tank ................................................................................. 4 - 39B Engines4-1 Engines ............................................................................................ 4 - 404-2 Engine Fault Codes - John Deere 4045TF275 Engine ..................... 4 - 41C Transmission5-1 Transmission .................................................................................... 4 - 42B Hydraulic Pumps6-1 Hydraulic Pump ................................................................................ 4 - 44C Manifolds7-1 Main Valve Manifold Components .................................................... 4 - 487-2 Tilt Limiter Manifold Components ..................................................... 4 - 497-3 Dual Pilot Check Manifold Components ........................................... 4 - 507-4 Boom Activated Rear Lock-up Manifold Components ...................... 4 - 517-5 Fork Rotate Speed Manifold Components (option) ........................... 4 - 52
