99903514:TELESCOPIC CRANE: 3-4 SECTION 3: REPAIR
3-7: CRANE BASE REMOVAL AND RE-
PLACEMENT
1) Mark and remove the hydraulic hoses
connected to the base. Be sure to cap the
hoses to prevent contamination.
2) Use a hoist or two slings to support the
entire crane.
3) Remove and discard the bolts which mount
the crane base to the body. Upon reassem-
bly, replace with new bolts which are prop-
erly torqued.
4) Using the hoist or slings, lift the crane up.
Remove the base for service or replace-
ment.
3-8: WORM DRIVE WINCH
Worm drive winches on IMT telescopic cranes
are equipped with three plugs. The plug on the
top of the winch is used to fill the winch with oil.
The plug at the bottom is used to drain oil, if
needed. The plug on the side is used as a
gauge to determine if there is enough oil in the
winch.
Each telescopic crane requires a specific
amount of oil in the winch.
Use 85W140 oil or equivalent in the winches,
unless otherwise directed. Fill winch with oil per
the following chart.
Crane Model Volume of Oil in Winch
1015 1/3 quart
2020,3820,5020 1/2 quart
5525, 6020 1 quart
7020, 7025 2 quarts
3-8-1: REMOVING THE WORM DRIVE
WINCH
To remove and replace the winch,
1. Unhook and remove the wire rope.
2. Unbolt the four bolts which hold the winch in
place.
3. Unbolt the pillow block on the opposite side of
the winch.
4. Remove the winch.
Reverse the procedure to install a new winch.
If the winch vibrates on reassembly, use a
spacer on the winch motor side for a tighter fit.
3-8-2: PLANETARY WINCH (MODELS
6025 AND 6625)
The planetary winch (used on crane models
6025 and 6625) includes both a gearbox and a
disc brake. A complete winch manual is in-
cluded with the parts manual for the 6025 and
6625 crane. Check the oil in the planetary
winch every 500 hours, and change the oil
completely every 1000 hours. Use SAE 90 EP
gear lube in the gearbox and automatic trans-
mission fluid in the brake section.
3-9: CRANE ROTATION SYSTEM
IMT telescopic cranes have two types of rotation
systems; an integral base and worm drive
system and a turntable system. Use the follow-
ing chart and the parts manual to determine
which type of rotation system is applicable for
your telescopic crane.
Crane Model Rotation System
1007, 1015, 2020 IMT base & worm drive
3020, 3820, 5020, Integral base & worm
5525, 6025, 6625 drive
7020, 7025 Spur gear drive train
rotation
Figure C-2: Winch Plugs
Fill plug
Drain plug Sight plug
20030115
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