JLG 80HX_HX+6_HXER ANSI Service Manual - Manual (Page 46)

SECTION 3 - CHASSIS & TURNTABLE
3-8 – JLG Lift – 3120271
23. Locate four shoulder bolts (42) 90 degrees apart into
counterbored holes in hub marked in step (16).
Torque shoulder bolts to 23-27 ft. lbs. (31-36 NM).
24. Install bolts (41) in remaining holes. Torque bolts to
23-27 ft. lbs. (31-36 NM).
25. Place coupling (43) into spindle and onto input
shaft.
26. Fill hub one-half full of EPGL 90 lubricant before
operation.
3.2 DRIVE BRAKE, AUSCO - MACHINES
BUILT PRIOR TO OCTOBER 1987
Disassembly
1. When shaft protruding downward, remove bolts (23)
alternately and evenly to reduce spring tension.
2. Remove power plate (20), o-ring (5), stationary discs
(13), springs (11), rotating discs (12), primary disc
(10), pins (9), springs (6,7) and spring retainer (if so
equipped).
3. Further disassembly is not recommended unless
necessary for the replacement of specific parts.
4. If further disassembly is required, remove snap rings
(1,2), then remove shaft (8) from bearing (3) by
lightly tapping shaft with a plastic mallet.
5. Remove bearing from housing.
6. Remove piston (14) from the power plate (20) by
introducing low pressure air (15 PSI) into hydraulic
inlet. Make sure piston is directed away from opera-
tor. Remove o-rings (15,17) from the piston O.D. and
I.D. grooves. Back-up rings will be damaged and
should not be removed if replacement is not
planned.
7. Bleeder (19) can be removed and inspected to
assure spring loaded ball moves freely and is free of
contamination.