Swing Motor (Sn 0030001051 To Present); Removal; Disassembly And Inspection - JLG T500J Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE

3.14 SWING MOTOR (SN 0030001051 TO PRESENT)

NOTE: This motor may also be used on some machines manufac-
tured between S/N 0030000960 to 0030001050.

Removal

1. Remove the two bolts securing the motor to the swing
drive.
2. Lift the motor up to gain access to the hydraulic lines
and tag and disconnect the lines running to the motor.
Cap or plug all openings.
*
*Secure this end of the shaft when removing the swing motor. If it starts
to pull out with the swing motor it could damage the internal seals.
Figure 3-23. Swing Motor- Removal

Disassembly and Inspection

1. Place the Torqlink™ in a soft jawed vice, with coupling
shaft (12) pointed down and the vise jaws clamping
firmly on the sides of the housing (18) mounting flange
or port bosses. Remove manifold port O-Rings (18A) if
applicable.
IFTHETORQLINK™ IS NOT FIRMLY HELD IN THE VISE, IT COULD BE DISLODGED
DURINGTHE SERVICE PROCEDURES, CAUSING INJURY.
3-42
2. Scribe an alignment mark down and across the Torq-
Swing Motor

MAE31640
3. Remove the five, six, or seven special ring head bolts (1)
link™ components from end cover (2) to housing (18) to
facilitate reassembly orientation where required. Loosen
two shuttle or relief valve plugs (21) for disassembly
later if included in end cover. 3/16 or 3/8 inch Allen
wrench or 1 inch hex socket required.
using an appropriate 1/2 or 9/16 inch size socket.
Inspect bolts for damaged threads, or sealing rings,
under the bolt head. Replace damaged bolts.
3121200