JLG 660SJ Service Manual User Manual
Page 59
SECTION 3 - CHASSIS & TURNTABLE
3120840
– JLG Lift –
3-9
23.
Locate four shoulder bolts (42), 90 degrees apart
into counter bored holes in hub marked in step (13).
Torque shoulder bolts to 64 Nm.
24.
Install bolts (41) in remaining holes. Torque bolts to
64 Nm.
25.
Place coupling (1) into spindle and onto input shaft.
26.
Fill hub one-half full of EPGL 90 lubricant before
operation.
3.2
TORQUE HUB, DRIVE (AUBURN GEAR)
Disassembly
1.
Position hub over suitable container and remove
drain plugs (27) from unit. Allow oil to completely
drain, then replace drain plugs.
2.
Remove twelve bolts (25) and flat washers (26) and
the cover from the hub (9). The thrust washer (21)
and the disengage plunger (22) usually remain with
cover (24) when it is removed. Remove thrust
washer (21), disengage plunger (22) and o-ring (23)
from the cover (24), discard o-ring seal (23).
3.
Remove primary sun gear (20) from input shaft (2).
4.
Remove the primary carrier assembly (19).
5.
Remove the secondary carrier assembly (18). It may
be necessary to remove the ring gear (17) first, if dif-
ficulty is encountered removing the carrier.
6.
Remove the input shaft (2) from spindle (3). Remove
the retaining rings (14), washers (15), and spring
(16) from input shaft (2) only if replacement is
required.
NOTE: The retaining rings (14), washers (15) and disen-
gage spring (16) are not included in unit equipped
with a cast iron disengage cover (29).
7.
If not previously removed (see step 5), remove ring
gear (17) from hub (9). It may be necessary to strike
ring gear (17) with a rubber mallet to loosen from
hub (9).
8.
Remove the retaining ring (13) from groove in spin-
dle (3).
NOTE: Use a retaining ring expander tool to remove retain-
ing ring (13).
9.
Lift hub (9) from spindle (3). If bearings are not a
loose fit, it may be necessary to press spindle (3)
from hub (9).
10.
Remove oil seals (4) and (5) and bearing cones (6 &
11) from the hub (9). Inspect bearing cups (7 & 10)
in position and remove only if replacement is
required.
Assembly
1.
If necessary press new bearing cups (7 & 10) in
each end of the hub (9). It is recommended that
bearing cups (7 & 10) and cones (6 & 11) be
replaced in sets.