JLG M600 Service Manual - Manual (Page 77)

SECTION 3 - CHASSIS & TURNTABLE
3121813 – JLG Lift – 3-39
Hub-Shaft Sub-Assembly
(See Figure 3-22., Hub Shaft Disassembly)
1. Press Bearing Cup (1E) into Motor end of Housing
(1G) using an appropriate pressing tool.
2. Invert Housing (1G) and press Bearing Cup (1C) into
Housing (1G) using an appropriate pressing tool.Set
Bearing Cone (1F) onto Bearing Cup (1E).
3. Using an appropriate pressing tool, press Seal (1B)
into Housing (1G) until it is flush with the end of the
Housing (1G).
4. Apply liberal amount of grease to lip of Seal (1B).
5. Invert Housing (1G) and lower onto Output Shaft
(1A).
NOTE: Be careful not to damage seal while lowering Hous-
ing onto Output Shaft.
6. Press Bearing Cone (1D) onto Output Shaft (1A)
until it seats against the bearing shoulder.
7. Place Thrust Washer (1H) onto Bearing Cone (1D).
EYE PROTECTION SHOULD BE WORN DURING THE NEXT STEP
OF THIS PROCEDURE.
NOTE: Retaining Ring (1I) should never be reused in a
repair or rebuild.
8. Using retaining ring pliers, install Retaining Ring (1I)
into groove in Output Shaft (1A). If Retaining Ring
(1I) will not seat completely into groove, use an
appropriate pressing tool to press down on Bearing
Cone (1D) while rotating Housing (1G). Reinstall
Thrust Washer (1H) and Retaining Ring according to
preceding procedures. Tap the Retaining Ring (1I)
with a soft metal punch to ensure that the Retaining
Ring (1I) is completely seated in the groove of the
Output Shaft (1A).
9. Using a soft face hammer, hit the end of the Shaft
(1A) to remove the bearing preload.
10. Install O-ring Plug (1J) and torque to 23 to 24 ft-lbs.
Carrier Sub-Assembly
(See Figure 3-23., Carrier Disassembly)
1. Apply a liberal coat of grease to the bore of Planet
Gear (3F). This will enable the Needle Rollers (3C) to
be held in place during assembly.
2. Install the first row of 16 Needle Rollers (3C) into the
bore of Planet Gear (3F).
3. Insert Spacer (3D) into bore of Planet Gear (3F) on
top of the Needle Rollers (3C).
4. Place second row of Needle Rollers (3C) into bore of
Planet Gear (3F) against Spacer (3D) and remove
Planet Shaft (3E).
5. Place Carrier (3A) on bench so that one of the Roll
Pin (3G) holes is straight up.
6. Paying attention to the location of the Roll Pin (3G)
hole in the Planet Shaft (3E), start Planet Shaft (3E)
through the hole in Carrier (3A). Using ample grease
to hold it in position, slide one Thrust Washer (3B)
over the Planet Shaft (3E) with the tang resting in the
cast slot of the Carrier (3A).
7. Place the Planet Gear (3F) into position in Carrier
(3A) and push Planet Shaft (3E) through the Planet
Gear (3F) without going all the way through.
8. Slide the second Thrust Washer (3B) between the
Planet Gear (3F) and the Carrier (3A) with the tang of
the washer located in the cast slot of the Carrier
(3A). Finish sliding the Planet Shaft (3E) through the
Thrust Washer (3B) and into the Carrier (3A).
9. Position the non-chamfered side on the Planet Shaft
(3E) roll pin hole so that it is in line with the hole in
the Carrier (3A) using a 1/8 inch diameter punch.
NOTE: If Planet Shaft (3E) has a flat on the end, position the
flat toward the center of the Carrier (3A).
10. After using a 1/4" punch to align the Roll Pin (3G)
holes in the Carrier (3A) and the Planet Shaft (3E),
drive the Roll Pin (3G) through Carrier (3A) and into
the Planet Shaft (3E) until the Roll Pin (3G) is flush
with the bottom of the cast tang slot in the Carrier
(3A). Use a 1/4" pin punch to make sure the Roll Pin
(3G) is flush in the slot.
NOTE: On 6:1 Ratios of S1C"s, the pin must be 0.125”
below the surface of the outside diameter.
11. Repeat Steps 1 through 10 for the remaining two
Planet Gears (3F).