JLG 450A_AJ Series II Service Manual - Manual (Page 86)

SECTION 3 - CHASSIS & TURNTABLE
3-46 – JLG Lift – 3121290
Disassembly and Inspection
Refer to Figure 3-41., Swing Motor - Exploded View.
1. Place motor in a soft jawed vice, with coupling shaft (12)
pointed down and vise jaws clamping firmly on sides of
housing (18) mounting flange, or port bosses. Remove
manifold port O-rings if applicable.
IF MOTOR IS NOT HELD FIRMLY IN VISE, IT COULD DISLODGE DURING SERVICE
PROCEDURES AND CAUSE INJURY.
2. Scribe an alignment mark down and across motor com-
ponents from end cover (2) to housing (18) for proper
reassembly orientation.
3. Remove special ring head bolts (1) with 1/2" or 9/16"
socket. Inspect bolts for damaged threads or sealing
rings. Replace damaged bolts.
4. Remove end cover assembly (2) and seal ring (4). Discard
seal ring.