JLG 110HX ANSI Service Manual - Manual (Page 85)

SECTION 2 - PROCEDURES
3120636 – JLG Lift – 2-61
10. Position o-ring (6) in groove in hub (24).
11. While holding ring gear (7) and carrier assembly
(10), insert smaller diameter of cluster gears (11)
into internal gear (19).
12. Rotate ring gear (7) until hole marked “X” is located
over hub shaft assembly (24).
13. Insert input gear (18) into carrier assembly (10) so
that input gear and larger diameter of cluster gears
(11) are in mesh. Check that carrier assembly (10)
rotates freely.
14. Position thrust washer (17) on shaft of input gear
(18).
15. Apply a light coating of petroleum jelly or multi-pur-
pose grease to new outer o-ring (6).
16. Position o-ring (6) into groove of cover (1).
17. Apply a light coating of petroleum jelly or multi-pur-
pose grease to outer thrust washers (8) and thrust
bearing (9).
18. Position outer thrust washer (8), thrust bearing (9)
and thrust washer (8) in cover (1).
19. Position cover (1) on ring gear (7) with oil check
plug (5) in cover located at 90° from oil fill plugs (25
and 26) in hub (24).
20. Install four shoulder bolts (3) and lockwashers (4)
into appropriate counterbored holes in hub (24).
21. Install eight bolts (2) which attach cover (1) to ring
gear (7) and hub (24) and tighten to a torque of 23-
27 ft.lbs. (3.2-3.7 kgm).
22. Carefully install hub pinion gear on splined output
shaft. If necessary, gently tap into position with a soft
headed mallet.
23. Apply No. 2 Lift Grade Loctite to pinion gear retain-
ing plate screws.
24. Position gear retaining plate and install attaching
screws.
25. Remove oil fill plug (25 or 26) and fill hub assembly
with approximately one quart of approved extreme
pressure gear lubricant. Install fill plug.
2.21 SWING BRAKE - AUSCO - MACHINES
BUILT TO 1992
Disassembly
1. With shaft protruding downward, remove bolts (22)
alternately and evenly to reduce spring tension.
2. Remove power plate (21) and gasket (2).
3. Bearing (18) is pressed onto shaft (7) and must be
removed before removal of rotating discs (11) and
stationary discs (12).
4. Further disassembly is not recommended unless
necessary for the replacement of specific parts.
5. If further disassembly is required, remove shaft (7)
and stack sub-assembly from housing (1) by lightly
tapping or pressing on the small external spline end
of the shaft and removing the shaft, bearings and
stack from housing.
6. Remove bearing (18), stationary disc (12), rotating
disc (11), springs (10) and primary disc 9.
7. Remove bearing (3) from shaft, taking care not to
damage seal 4. Remove seal.
8. Remove springs (6) and spring retainer (5) from
housing.
9. Remove piston (13) from power plate by introducing
low pressure air (15 psi [10 bar]) into the hydraulic
inlet. Direct piston away from operator.
10. Remove o-rings (15 and 17) and back-up rings (14
and 16) from piston OD and ID grooves. Back-up
rings will be damaged and should not be removed if
replacement is not planned.
11. Pressure relief valve (23) can be removed and
inspected to assure spring loaded ball moves freely
and is contamination free.
Cleaning and Inspection
1. Clean all parts thoroughly.
2. Closely inspect all parts for damage, excessive wear,
cracks and chips. Replace parts as necessary.
3. Discard seals and o-rings.
4. Closely inspect bearings and bearing contact sur-
faces.
NOTE: Bearings may be re-used if, after thorough inspec-
tion, they are found to be in good condition.
Assembly
NOTE: Lubricate all seals, o-rings, cylinder of the power
plate and piston with clean hydraulic oil prior to
assembly.
1. Assemble piston (13) into power plate (21) using a
shop press, being careful not to damage the o-rings
or back-up rings. Visually align the center of the cut-
outs in piston with torque pin (8) holes in power
plate. Avoid pushing the piston all the way to the
bottom of the cylinder in the power plate. Try to keep