JLG 450A_AJ Series II Service Manual - Manual (Page 93)

SECTION 3 - CHASSIS & TURNTABLE
3121290 – JLG Lift – 3-53
Assembly
Refer to Figure 3-41., 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 other-
wise 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, mani-
fold rotor set, wear plate and housing, and from port and seal-
ing areas.
WEAR EYE PROTECTION AND BE SURE TO COMPLY WITH OSHA OR OTHER MAX-
IMUM 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. Press new bearing/bushing into counterbore at
mounting flange end of housing, using appropriately
sized bearing mandrel as described to control bearing/
bushing depth. Housing requires use of bearing man-
drel 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 meth-
ods 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 contact face. Use
opposite end of bearing mandrel used to press in outer
bearing/bushing (19).