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INPUT SHAFT
DESCRIPTION
The input shaft assembly (Fig. 205) is part of the
transaxle geartrain, is driven by the clutch assembly,
and consists of the following components:
²Input Mainshaft
²3rd Speed Gear
²4th Speed Gear
²3/4 Synchronizer
²5th Input Gear
The input shaft meshes with the intermediate
shaft, and is supported by a needle bearing at the
front of the transaxle, and a sealed roller bearing at
the rear of the transaxle.
DISASSEMBLY
NOTE: When servicing the input shaft assembly, all
snap rings which are removed MUST be replaced
with new snap rings upon reassembly. The 5th gear
nut must be replaced also.
(1) Invert input shaft assembly and place in fix-
ture 8487.(2) Remove input bearing snap ring (Fig. 206).
Fig. 205 Input Shaft Assembly
1 - INPUT SHAFT 6 - 5TH GEAR NUT
2 - THRUST WASHER 7 - SNAP RING
3 - 3RD GEAR 8 - INPUT BEARING (SEALED)
4 - 4TH GEAR 9 - SNAP RING
5 - 5TH GEAR 10 - 3/4 SYNCHRONIZER
Fig. 206 Input Bearing Snap Ring Removal
1 - SNAP RING
2 - INPUT BEARING
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(3) Remove input bearing. Place input shaft
assembly onto arbor press table, with the input bear-
ing supported by bearing splitter (Fig. 207). Using
adapter 8486-4, press bearing off of shaft, while
helper supports shaft to prevent dropping.
(4) Place input shaft assembly back into fixture
8487. Secure fixture to bench with fasteners, or
secure to bench vise.
NOTE: 5th gear nut is staked to the shaft. If neces-
sary, grind stake area to ease removal, but use care
not to contact gear.
(5) Remove 5th gear nut with wrench 8478 (Fig.
208). Discard nut and use a new one upon assembly.
(6) Remove 5th gear with arbor press and bearing
splitter.
(7) Remove 4th gear (Fig. 209).
Fig. 207 Input Bearing Removal
1 - ARBOR PRESS RAM
2 - ADAPTER 8486-4
3 - INPUT BEARING
4 - BEARING SPLITTER
Fig. 208 5th Gear Nut Removal/Installation
1 - WRENCH 8478
2 - 5TH GEAR NUT
Fig. 209 4th Gear Removal/Installation
1 - 4th GEAR
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INPUT SHAFT (Continued)
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Page 1939 of 2399
(8) Remove 4th gear blocker ring (Fig. 210).
(9) Remove 3/4 synchronizer snap ring (Fig. 211).
Discard and replace with new snap ring upon assem-
bly.(10) Remove 3/4 synchronizer (Fig. 212).
(11) Remove 3rd gear blocker ring (Fig. 213).
Fig. 210 4th Gear Blocker Ring
1 - 4th GEAR BLOCKER RING
Fig. 211 3/4 Synchro Snap Ring
1 - SNAP RING
2 - 3/4 SYNCHRONIZER
Fig. 212 3/4 Synchro Assembly
1 - 3/4 SYNCHRONIZER
Fig. 213 3rd Gear Blocker Ring
1 - 3RD GEAR BLOCKER RING
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INPUT SHAFT (Continued)
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(12) Remove 3rd gear (Fig. 214). (13) Inspect third gear thrust washer for signs of
excessive wear. To replace, drive off of input shaft
with suitable drift and hammer.
ASSEMBLY
NOTE: When servicing the input shaft assembly, all
snap rings MUST be replaced with new ones upon
assembly. 5th gear nut must also be replaced.
NOTE: When installing 3/4 synchronizer hub to
shaft, make sure to align oil slots on synchronizer
hub face with oil hole in the shaft splined hub jour-
nal.
NOTE: Refer to (Fig. 215) for input shaft assembly
reference.
Fig. 215 Input Shaft Assembly
1 - INPUT SHAFT 6 - 5TH GEAR NUT
2 - THRUST WASHER 7 - SNAP RING
3 - 3RD GEAR 8 - INPUT BEARING (SEALED)
4 - 4TH GEAR 9 - SNAP RING
5 - 5TH GEAR 10 - 3/4 SYNCHRONIZER
Fig. 214 3rd Gear Removal/Installation
1 - 3RD GEAR
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INPUT SHAFT (Continued)
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(1) Install input shaft into fixture 8487.
(2) Install thrust washer if removed upon disas-
sembly.
(3) Install 3rd gear (Fig. 216).
(4) Install 3rd gear blocker ring (Fig. 217).(5) Install 3/4 synchronizer (Fig. 218).When
installing 3/4 synchronizer hub to shaft, make
sure to align oil slots on synchronizer hub face
with oil hole in the shaft splined hub journal.
(6) InstallNEW3/4 synchronizer snap ring (Fig.
219).
Fig. 216 3rd Gear Removal/Installation
1 - 3RD GEAR
Fig. 217 3rd Gear Blocker Ring
1 - 3RD GEAR BLOCKER RING
Fig. 218 3/4 Synchro Assembly
1 - 3/4 SYNCHRONIZER
Fig. 219 3/4 Synchro Snap Ring
1 - SNAP RING
2 - 3/4 SYNCHRONIZER
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INPUT SHAFT (Continued)
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(7) Install 4th gear blocker ring (Fig. 220).
(8) Install 4th gear (Fig. 221).
(9) Install 5th gear and press into position using
installer 8481 (Fig. 222).
(10) InstallNEW5th gear nut and torque to 200
N´m (148 ft. lbs.) using wrench 8478 (Fig. 223).
Fig. 220 4th Gear Blocker Ring
1 - 4th GEAR BLOCKER RING
Fig. 221 4th Gear Removal/Installation
1 - 4th GEAR
Fig. 222 5th Gear Installation
1 - ARBOR PRESS RAM
2 - INSTALLER 8481
3 - 5TH GEAR
Fig. 223 5th Gear Nut Removal/Installation
1 - WRENCH 8478
2 - 5TH GEAR NUT
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INPUT SHAFT (Continued)
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(11) Stake 5th Gear nut as follows:
(a) Install staking tool 8479 to 5th gear nut.
(b) Tighten upper thumb screw by hand (Fig.
224).
(c) Tighten two (2) side thumb screws by hand.
(d) Tighten both staking screws until they bot-
tom on tool body (Fig. 225).
(e) Loosen staking screws and thumb screws.
Remove tool and visually inspect stake (Fig. 226).
NOTE: The input shaft sealed roller bearing and
snap ring do not get installed until transaxle assem-
bly to facilitate installation of the reverse idler gear
mechanism.
Fig. 224 Staking Tool Set-Up
1 - STAKING TOOL 8479
2 - THUMB SCREWS (3)
Fig. 225 Tighten Stake Screws
1 - STAKING TOOL 8479
Fig. 226 5th Gear Nut Stake
1-STAKE
2 - 5TH GEAR NUT
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INPUT SHAFT (Continued)
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INTERMEDIATE SHAFT
DESCRIPTION
The intermediate shaft assembly (Fig. 227) is part
of the transaxle geartrain, meshes with and is driven
by the input shaft, drives the differential via an inte-
grated pinion gear, and consists of the following com-
ponents:
²Intermediate Mainshaft
²1st Speed Gear
²2nd Speed Gear
²3/4 Cluster Gear
²5th Speed Gear
²Reverse Gear
²1/2 Synchronizer
²5/R Synchronizer
The intermediate shaft is supported by a caged
roller bearing at the front of the transaxle, and a
sealed roller bearing at the rear of the transaxle.
Fig. 227 Intermediate Shaft Assembly
1 - INTERMEDIATE SHAFT 10 - SNAP RING
2 - ROLLER BEARING 11 - SEALED ROLLER BEARING
3 - SNAP RING 12 - THRUST WASHER
4 - NEEDLE BEARING 13 - NEEDLE BEARING
5 - 1ST SPEED GEAR 14 - REVERSE GEAR
6 - SNAP RING 15 - SNAP RING
7 - 2ND SPEED GEAR 16 - 5/R SYNCHRO
8 - 3/4 CLUSTER GEAR 17 - 5TH SPEED GEAR
9 - SNAP RING 18 - 1/2 SYNCHRO
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