JLG 800A_AJ ANSI Service Manual - Manual (Page 106)

SECTION 3 - CHASSIS & TURNTABLE
3-50 – JLG Lift – 3120740
3.13 SWING HUB (PRIOR TO S/N
0300068040)
Disassembly
1. Loosen all 12 Cover Bolts (12) 8 (13) and drain the
oil from the unit.
2. Remove the 12 Cover Bolts (12) 8 (13) and lift off the
Cover (6). Remove and discard the o-ring (5) from
the counterbore of the Cover (6).
3. Remove the Input Gear (8) and Thrust Washer (10).
4. Lift out the Carrier Assembly (3) and top Thrust
Washer (11). This Thrust Washer (11) may stick to
the inside of the Cover (6).
5. Remove the Input Thrust Spacer (9).
6. Lift out the Internal Gear (2) and Thrust Washer (11).
The Thrust Washer (11) may stick to the under side
of the Carrier (3).
7. Remove the Retaining Ring (1I) from the Output
Shaft (1A) and discard.
EYE PROTECTION SHOULD BE WORN DURING RETAINING RING
(1L) REMOVAL.
8. Remove Bearing Shim (1H) from the Output Shaft
(1A).
9. The Output Shaft (1A) may now be pressed out of
the Hub (1G).
10. The Bearing Cups (1C) &(1E) will remain in Hub
(1G) as will Bearing Cone (1F). Bearing Cone (1D)
will remain on the Output Shaft (1A). The Seal (1B)
will be automatically removed during this procedure.
NOTE: If Bearing replacement is necessary, the Bearing
Cups can be removed with a slide hammer puller or
driven out with a punch.
11. To remove the Cluster Gears (3F) from the Carrier
(3A), drive the Anti-roll Pin (3G) into the Planet Shaft
(3E). The Planet Shaft (3E) may now be tapped out
of the Carrier. After Planet Shaft (3E) has been
removed the Roll Pin (3G) can be driven out.
12. The Cluster Gear (3F) can now be removed from the
Carrier (3A). The Thrust Washers (3B) will be
removed with the Cluster Gear (3F).
13. The Needle Rollers (3C) and Spacer (3D) are now
removed from the Cluster Gear (3F).
WHEN REBUILDING OR REPAIRING THE UNIT, THE RETAINING
RING (1I), O-RINGS (5) AND SEAL (1B) SHOULD ALWAYS BE
REPLACED.
Assembly
1. With the Hub Shaft Sub-assembly resting on the
Shaft (1A) install Internal Gear (2). The Spline of the
Internal Gear (2) bore will mesh with the Spline of
the Output Shaft (1A).
2. Thrust Washer (11) is installed on the face of the
Output Shaft (1A). Sufficient Grease or Petroleum
Jelly should be used to hold Thrust Washer (11) in
place.
3. Place o-ring (5) into Hub counterbore. Use petro-
leum jelly to hold o-ring in place.
BEWARE OF SHARP EDGES OF THE COUNTERBORE WHILE SEAT-
ING THIS O-RING.