JLG M4069 Service Manual - Manual (Page 66)

SECTION 3 - CHASSIS & SCISSOR ARMS
3-38 – JLG Lift – 3121824
Input Carrier Sub-Assembly
1. Apply a liberal coat of grease to the bore of one
Input Planet Gear (4).
2. Line the inside of the Planet Gear with 14 Needle
Bearings (6).
NOTE: The last roller installed must be installed end wise.
That is, the end of the last roller must be placed in
between the ends of the two rollers which form the
space, and then slid, parallel to the other rollers, into
place.
3. Set Carrier (3) in an upright position.
4. Insert a Planet Shaft (2) into the planet shaft hole in
the end of the Carrier opposite the splined end. The
end of the Planet Shaft that does NOT have the roll
pin hole should be inserted into the carrier FIRST.
5. Place one Thrust Washer (5) onto the end of the
Planet Shaft. Make sure the flat faces towards the
inside of the carrier and make sure the button fits in
the pocket on the inside of the Carrier towards the
OD.
6. Following the Thrust Washer, place the Planet Gear
with Needle Bearings onto the Planet Shaft.
7. Following the Planet Gear, place one more Thrust
Washer onto the Planet Shaft. Align the Thrust
Washer in the same manner described in Step 5.
8. Now insert the Planet Shaft through the opposite
planet shaft hole on the Carrier. Use an alignment
punch or similar tool to align the roll pin holes on the
Carrier and Planet Shaft.
NOTE: Be sure not to hit the Planet Gears when driving in
the Roll Pins (1).
9. Drive the Roll Pins down into the aligned roll pin
holes. Pin should be flush with the flat of the Carrier.
10. Repeat Steps 1-9 for the installation of the two
remaining Planet Gears.
NOTE: Some grease may need to be applied to the thrust
washers to hold them in place while installing the
Planet Gears.
1. Roll Pin
2. Planet Shaft
3. Carrier
4. Planet Gears
5. Thrust Spacer
6. Needle Bearings
Figure 3-24. Input Carrier Sub-Assembly