Hub-Shaft Sub-Assembly; Carrier Sub-Assembly - JLG 1200SJP Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE

Hub-Shaft Sub-Assembly

NOTE: Refer to Figure 3-51., Swing Drive - Hub Shaft Disassembly
(SN 0300201016 through 0300254466, SN B300002238 to
Present).
1. Press Bearing Cone (1D) onto Shaft (1A).
2. Press Bearing Cup (1C) into Housing (1G), take care to
insure cup starts square with bore of Hub (1G).
3. Place Bearing Cone (1D) in Bearing Cup (1C) in Housing
1G).
4. Press or tap Seal (1B) into the counterbore of Housing
(1G) to the point where it becomes flush with the Hous-
ing (1G) face. Care should be taken to insure Seal (1B) is
being correctly installed (smooth face up).
5. Invert Hub (1G) and press Bearing Cup (1E) into counter-
bore of Housing (1G).
6. Carefully lower Housing (1G) onto the Output Shaft (1A).
7. Start the Bearing Cone (1F) onto the Output Shaft (1A).
8. Press or tap the Bearing Cone (1F) onto the Output Shaft
(1A) until it is seated in the Bearing Cup (1E).
9. Install Bearing Spacer (1H) onto Output Shaft (1A) and
against Bearing Cone (1F).
10. Install Retaining Ring (1I) into the groove in the Output
Shaft (1A). This Retaining Ring (1I) should never be
reused in a repair or rebuild.
EYE PROTECTION SHOULD BE WORN DURING THIS PROCEDURE.
11. 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).
EYE PROTECTION SHOULD BE WORN DURING THIS PROCEDURE.
12. Install O-ring Plug (1J) and torque 23 to 24 ft-lbs.(32 -
33.5 Nm).
3-82

Carrier Sub-Assembly

NOTE: Refer to Figure 3-52., Swing Drive - Carrier Disassembly (SN
0300201016 through 0300254466, SN B300002238 to Pres-
ent).
1. Apply a liberal coat of grease to the bore of Cluster Gear
(3F). This will enable the Needle Rollers (3C) to be held in
place during assembly.
2. Install the first row of 14 Needle Rollers (3C) into the
bore of Cluster Gear (3F).
3. Insert Spacer (3D) into bore of Cluster Gear (3F) on top of
the Needle Rollers (3C).
4. Place second row of Needle Rollers (3C) into bore of
Cluster Gear (3F) against Spacer (3D) and remove Planet
Shaft (3E).
5. Place Carrier (3A) into tool fixture so that one of the roll
pin holes is straight up.
6. 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). Place Ball-
Indented Thrust Washer (3H) on the Planet Shaft (3E)
with the indents against the first washer.
7. With large end of Cluster Gear (3F) facing the roll pin
hole in the carrier, place the cluster gear into position in
Carrier (3A) and push Planet Shaft (3E) through the Clus-
ter Gear (3F) without going all the way through.
8. Slide the second Thrust Washer (3E) between the Cluster
Gear (3F) and the Carrier (3A) with the tang of the
washer located in the cast slot of the Carrier (3A). Slide
ball-indented Thrust Washer (3H) onto the end of the
Planet Shaft with the indents against the second thrust
Washer. Finish sliding the Planet Shaft (3E) through the
Thrust Washers (3H) & (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 Car-
rier (3A) using a 1/8" (3 mm) diameter punch.
10. After using a 3/16" (5 mm) punch to align the two roll
pin holes. 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" (6 mm) pin punch to make sure the Roll
Pin (3G) is flush in the slot.
11. Repeat Steps 1 thru 10 for the remaining two Cluster
Gears(3F).
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