JLG M4069 ANSI Service Manual - Manual (Page 71)

SECTION 3 - CHASSIS & SCISSOR ARMS
3121122 – JLG Lift – 3-43
NOTE: All components should receive a generous amount
of lubricant oil as they are being assembled.
1. Place Hub-Spindle Sub-Assembly on a bench.
2. Grease O-Ring (14) and place it into the groove of
the Housing (13).
3. Place the Ring Gear (12) onto the Hub. Align the 3
shipping cap screw holes on the Hub and Ring
Gear.
4. Install the 3 Flat Head Bolts (11) into the Ring Gear
and Hub. Torque the Bolts to 15-20 ft-lbs.
5. Place Output Stage Carrier Subassembly (10) into
mesh with the Spindle splines.
6. Place the External Retaining Ring (16) over the 13T
spline to the retaining groove on the Input Shaft (7).
NOTE: For ratio 48:1, assemble the Second Stage Sun
Gear (9) over the Input Shaft first, then install the
External Retaining Ring.
7. Using an appropriate tool, install the Retaining Ring
(17) into the groove on the Output Sun.
8. Place the Input Shaft spline end into mesh with the
Internal Coupling (1) splines.
9. With the modified spline end facing up, place the
Output Sun Gear into mesh with the Output Planet
Gears.
10. Place the Input Carrier Sub-Assembly (8) onto the
Output Sun Gear splines. Drop the First Stage Sun
Gear (6) into mesh with the planet gears for specific
ratios, if required. (No timing required).
11. Grease the O-Ring (15) and insert into the groove in
the Cover Subassembly (4).
12. Install the Cover Subassembly into the Ring Gear (3)
counter-bore and install the Retaining Ring (2) into
the groove in the Ring Gear.
13. Attach the ID Plate (18) onto the unit using the Drive
Screw (not shown).
14. Check disconnect, roll and air check the unit, leak
check the brake, and record release pressure.
15. Insert the Plastic Plug (not shown) into place, if
applicable.