IMT 3820

99903514:TELESCOPIC CRANE: 3-1 SECTION 3: REPAIR
SECTION 3: REPAIR
3-1: GENERAL ..........................................................................................................................2
3-2: REPAIR PRECAUTIONS ...................................................................................................2
3-3: SYSTEMATIC REPAIR PROCEDURE .............................................................................2
3-4: CLEANLINESS ..................................................................................................................3
3-5: HYDRAULIC SYSTEM .......................................................................................................3
3-6: FASTENERS & TORQUE VALUES ..................................................................................3
3-7: CRANE BASE REMOVAL AND REPLACEMENT ............................................................4
3-8: WORM DRIVE WINCH .......................................................................................................4
3-8-1: REMOVING THE WORM DRIVE WINCH .......................................................................4
3-8-2: PLANETARY WINCH (MODELS 6025 AND 6625) .........................................................4
3-9: CRANE ROTATION SYSTEM ............................................................................................4
3-9-1: REMOVING THE CRANE ROTATION SYSTEM ............................................................5
3-9-2: SETTING BACKLASH - IMT BASE & WORM DRIVE (1007, 1015, 2020).....................5
3-9-3: WORM END PLAY & BACKLASH - INTEGRAL BASE & WORM DRIVE (3020, 3820,
5020, 5525, 6025, 6625) .......................................................................................................5
3-9-4: TURNTABLE GEAR REMOVAL & REPLACEMENT (7020 & 7025).............................6
3-9-5: PINION, DRIVE GEAR BUSHING REMOVAL & REPLACEMENT (7020, 7025)...........8
3-9-6: ROTATION MOTOR AND C’BAL VALVE REMOVAL AND REPLACEMENT (7020,
7025).....................................................................................................................................9
3-10: WEAR PADS ....................................................................................................................9
3-11: PINS................................................................................................................................10
3-12: BEARINGS & BUSHINGS .............................................................................................10
3-12-1: BEARING TYPES .......................................................................................................10
3-12-2: BEARING INSPECTION & REPLACEMENT.............................................................10
3-13: VALVEBANK.................................................................................................................. 11
3-13-1: VALVEBANK COMPONENTS.................................................................................... 11
3-13-2: VALVEBANK TROUBLESHOOTING .........................................................................13
3-13-3: SINGLE VALVE REPLACEMENT ..............................................................................13
3-13-4: VALVEBANK REMOVAL AND REPLACEMENT.......................................................13
3-14: LOWER CYLINDER REMOVAL & REPLACEMENT ....................................................14
3-15: EXTERNAL EXTENSION CYLINDER-REMOVAL AND REPLACEMENT...................14
3-16: INTERNAL CYLINDER REMOVAL AND REPLACEMENT ..........................................15
3-17: LOWER BOOM REMOVAL AND REPLACEMENT.......................................................15
3-18: WIRE ROPE REMOVAL/REPLACEMENT ....................................................................15
20030115