JLG DVSP Series Service Manual - Manual (Page 34)

SECTION 3 - BASE COMPONENTS
3-4 – JLG Lift – 3121136
Visual Inspection and Limiting Torque
Checking Procedure
Special tools required:
• Torque Wrench (capable of setting torque in the range
of 220 ft. lb.
• Special tool part # 0080229
• 2-3/8" open end wrench
• Loctite #242
1. Locate the machine on a firm level surface.
2. Before clutch torquing can begin, you must remove
the wheels using the following procedure:
NOTE: Machines equipped with Rough Terrain Wheels,
make a visible mark on the wheel so the wheel does
not get inverted when reinstalled.
a. Using a fork truck, raise unit approximately 12"
off the floor and support in a safe manner.
NOTE: (See Section 3.3, Drive And Caster Wheels, illustra-
tion)
b. Remove the wheel retaining screw (1) from axle
assembly. Clean threads of screw.
c. Remove retaining washer (2), and shim(s) (3).
d. Slide wheel (4) from axle.
3. Remove the Drive Motor Cover from under machine,
see instructions previously outlined in this section of
the manual.
4. Carefully raise the lift to gain access to the under-
side of the base frame. Refer to "Positioning Lift For
Access to Components Located Under the Base
Frame" in Section 2.
5. Locate the clutch assembly on each rear drive axle
and check for the following;
a. Check the coupling chains for any loose or miss-
ing parts, i.e. pins, links, etc., replace if neces-
sary.
b. Check that at least three (3) of the lock tabs on
the clutch adjusting nut - lock washer are prop-
erly bent and the nut is secure.
c. Check for any debris wedged in or wrapped
around the clutch coupling chains and axle
shafts. Remove debris and clean area if neces-
sary.
Check Clutch Torque Setting
1. Select a torque wrench capable of setting a torque
of 220 ft. lb. Insert special tool (P/N-0080229) into a
1-3/4" socket on the torque wrench.
2. Slide the tool onto the end of the drive axle aligning
the key on the axle shaft (install key on axle, if nec-
essary), with key slot in the tool.
3. Set the torque wrench to the proper torque setting -
220 ft. lb.
4. Turn the torque wrench and note the torque setting
when the torque limiting clutch slips. Check both
rear drive axles.
5. If torque setting is OK, re-install the drive motor
cover and drive motor wheels and lower machine.
IF NOT, continue with Torque Limiting Clutch Adjust-
ment following.
Checking Clutch - Torque Setting
1. Torque Limiting Clutch (a) 3. Clutch Torque Setting -
2. Socket Tool Insert 220 ft. lb.
Notes: (a) DO NOT lubricate chain, lubricant could drip onto the
torque clutch friction disk surfaces and cause the
clutch to slip.
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