JLG 450A_AJ Series II Service Manual - Manual (Page 132)

SECTION 3 - CHASSIS & TURNTABLE
3-82 – JLG Lift – 3121180
Assembly
Refer to Figure 3-56., Swing Motor - Exploded View.
Replace seals and seal rings with new ones each time
motor unit is reassembled. Lubricate seals and seal rings
with SAE 10W40 oil or clean grease before assembly.
NOTE: Do not oil or grease parts before assembly unless
otherwise indicated.
SOLVENTS ARE FLAMMABLE. EVEN A SMALL EXPLOSION OR
FIRE CAN CAUSE INJURY OR DEATH. BE EXTREMELY CAREFUL
WHEN USING ANY SOLVENT.
Wash all parts in clean petroleum-based solvents before
assembly. Blow dry with compressed air. Remove any
paint chips from end cover mating surfaces, commutator
set, manifold rotor set, wear plate and housing, and from
port and sealing areas.
WEAR EYE PROTECTION AND BE SURE TO COMPLY WITH OSHA
OR OTHER MAXIMUM AIR PRESSURE REQUIREMENTS.
1. If housing (18) bearing components were removed
for replacement, thoroughly coat and pack a new
outer bearing/bushing (19) with clean corrosion
resistant grease recommended in material section.
Press new bearing/bushing into counterbore at
mounting flange end of housing, using appropriately
sized bearing mandrel as described to control bear-
ing/ bushing depth. Housing requires use of bearing
mandrel to press bearing/ bushing (19) into housing
to a required depth of 0.151/0.161" (3.84/4.09 mm)
from end of bearing counterbore.
NOTE: Bearing mandrel must be pressed against lettered
end of bearing shell. Housing bore must be square
with press base and bearing/bushing not cocked
when pressing a bearing/bushing into housing.
NOTE: If A bearing mandrel is not available and alternate
methods are used to press in bearing/bushing (13)
and (19). bearing/bushing depths specified must be
achieved to Ensure adequate bearing support and
correct relationship to adjacent components when
assembled.
BEARING/BUSHINGS (13) AND (19) HAVE A PRESS FIT INTO
HOUSING AND MUST BE DISCARDED WHEN REMOVED.
2. Inner housing bearing/bushing (13) can now be
pressed into its counter-bore in housing (18) flush to
0.03 inch (0.76 mm) below housing wear plate con-
tact face. Use opposite end of bearing mandrel used
to press in outer bearing/bushing (19).