Page 454 of 1395
7. Remove the set ball screws, washers, springs, steel
balls. and back-uP light switch.
STEEL BALLD. 5/16 in
8. Remove the flange bolt. drain plug, and filler plug
DRAIN PLUG
WASHERReplace.
LIGHT SWITCH
FILLER PLUG
WASHERReplace.
FLANGE BOLT
9. Remove the transmission housing mounting bolts
in a crisscross pauern in several steps.
10. Remove the 32 mm sealing bolt
Expand the snap ring on the countershaft ball bear-
ing, and remove it from the groove using a pair of
snap ring plier.
Separate the transmission housing from the clutch
housing.
Remove the dowel pins, and wipe it clean of the
sealant.
'I t.
(cont'd)
13-15
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Page 455 of 1395
Transmission Assembly
Disassembly (cont'dl
14. Remove the oil gutter plate, 78 mm shim, and oilguide M plate.
OIL GUIDE M PLATE
15. Remove the select spring bolt.
OIL GUTTER PLATE
SELECT SPRING BOLT
13-16
18. Remove the oil seal.
16.Remove the spring pin using the pin punch and apair of diagonal cutters.
PIN PUNCH, 5.0 mm
17. Remove the select lever, springs, washer, and selectarm.
SEL€CT LEVER
{
V
OIL SEALReplace.
THRUST WASHER
Replace.
SELECT ARM
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Page 479 of 1395

Differential
Bearing Outer Race Replacement
Note these items:
. The bearing outer race and tapered roller bearingshould be replaced as a set.. lnspect and adjust the tapered roller bearing preload
whenever the tapered roller bearing is replaced.
'1. Remove the oil seals from the transmission housingand clutch housing (see page j3-43).
2. Drive the bearing outer race and thrust shim out ofthe transmission housing, or remove the bearingouter race and 75 mm shim from the clutch housingby heating the clutch housing to about 212"F(100"C) with a heat gun. Do not reuse the thrustshim if the outer race was driven out.
TRANSMISSIONHOUSING:
ATTACHMENT52x55mm07746 - 0010400
THRUST SHIM
BEARINGOUTER RACE
CLUTCHHOUSING:
13-40
4, lnstallthe oil seal (see page 13-43).
3. Install the thrust shim or 75 mm shim and the bear-ing outer race in the transmission housing andclutch housing using the special tools.
Note these items during bearing replacement:. Install the bearing outer race squarely.. Check that there is no clearance between thebearing outer race, thrust shim or 75 mm shimand housing.
TRANSMISSIONHOUSING:
HANDI-E07749 - 00 xxto
ATTACHMENT,62x68mm077ir6 - 0010500
BEARINGOUIER RACETHRUST SHIM
CLUTCHHOUSING:HANDLE07749 - 001tXX)o
ATTACHMENT.72xt5mm07745 - 00106{x)
OUTER RACE
75 mm SHIM
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Page 480 of 1395

Tapered Roller Bearing Preload Adiustment
lf any oJ the items listed below were replaced, the tapered
roller bearing preload must be adjusted.
. Transmission housing
. Clutch housing
. Differential carrier
o Tapered roller bearing and bearing outer race
. Thrust shim
. 75 mm sham
1. Remove the bearing outer race and thrust shim
from the transmission housing (see page 13-40)'
NOTE:
. Do not reuse the thrust shim if the bearing outer
race was driven out.
. Let the transmission cool to room temperature il
the bearing outer race was removed by heating
the clutch housing.
2. Do not use more than one thrust shim to adjust the
tapered bearing preload. First try the same size
thrust shim that was removed. There are no shims
used on the clutch housing side
SHIMTHRUST
/A
After installing the thrust shim, install the bearing
outer race in the transmission housing (see page
13-40).
With the mainshaft and countershaft removed,
install the differential assembly, and torque the
clutch housing and transmission housing.
NOTE: lt is not necessary to use sealing agent be-
tween the housings.
TOBOUE; 8 x 1.25 mm: 27 N'm(2.8 kgf'm, 20 lbt'ftl
Rotate the differential assembly in both directions
to seat the tapered roller bearings.
Measure the tapered roller bearing preload at nor-
mal room temperature. Measure the starting torque
of the differential assembly in both directions with
the special tool and a torque wrench.
STANDAFD: 1.4 - 2.5 N'm
{1/r - 26 kgf'cm, 12 - 23 lbf in)
(cont'd)
4.
5.
07HAJ - PK4020' 1
13-41
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Page 482 of 1395
Oil Seal Replacement
Transmission Housing:
1. Remove the oil seal from the transmission housing
2.lnstall the new oil seal into the transmission hous-
ing using the special tools.
NOTE: Install oil seal up to i0.5 mm (10.02 jn) from
transmission housing end surface.
TRANSMISSIONHOUSING
PRESS
fHANOLE
.--.'/'01119 - @1OCIO0
DRIVER ATTACHMENT- PG4()r00
PILOT,28 x 30 mm07JAO - PH80400
OIL SEALReplace.
OIL SEAL
Clutch Housing:
1. Remove the oil seal from the clutch housing.
HANDLE
lnstall the new oil seal into the clutch housing using
the special tools.
NOTE: Install oil seal up to t0.5 mm (t0.02 in) from
transmission housing end surface
CLUTCHHOUSING
PRESS
I
07749 - tx)l(xxto
DRIVER ATTACHMENTOTJAD - PHM1Ol
PILOT, 28 x 30 mm07JAD - PH8oaU)
Replace.
13-43
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Page 501 of 1395
Mainshaft Bearing/Oil Seal
Replacement
1. Remove the ball bearing using the specialtool.
3/8" -16 SLIDE HAMMER(Commercially available)
PULLER.25 - ,10 mm07736 - A01000A
2. Remove the oil seal from the clutch housing.
13-62
BALL BEARING
3. Drive the new oil seal in from the transmission side
using the special tools.
ATTACHMENT,12x 17 .nfi07746 - 0010300
Drive the new bali bearing in from the transmission
side using the special tools.
ATTACHMENT.62x68mm07746 - 0010500
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Page 503 of 1395

Mainshaft Thrust Clearance
Adjustment
l. Remove the 78 mm shim
the transmission housing.
4.
and oil guide plate from
Install the 3rd/4th synchro hub, spacer collar, sth
synchro hub, spacer, and ball bearing on the main-
shaft. then install the above assembly in the trans-
mission housing.
lnstallthe washer on the mainshaft.
Measure distance @ between the end of the trans-
mission housing and washer,
NOTE:
. Use a straight edge and vernier caliper.
. Measure at three locations and average the read-
Ing.
END otTRANSMISSION
MAINSHAFT
WASHER
3RD/4TH SYNCHRO HUB
SPACER COLLAR
sTH SYNCHRO HUB
SPACER
78 mm SHIM
13-64
BALL BEARING
5, Measure distance @ between the end of the clutch
housing and bearing inner race.
NOTE:
. Use a straight edge and depth gauge.
. Measure at three locations and avorage the read-
Ings.
END ot CLUTCH HOUSING
BEARING
Select the proper 78 mm shim from the chan by
using the formula below.
Shim S€lection Formula:
From the measurements you made in steps 4 and 5:-1. Add distance @ (step 5) to distance @ (step 4).
-2. From this number. subtract 0.93 (which is the
midpoint of the flex range of the clutch housing
bearing spring washer).
-3. Take this number and compare it to the avail-
able shim sizes in the chart.
(For example)
A: 2.39 2.61
+ Bi O.22 - 0.93
= 2.61= 1.68
Try the 1.68 mm (0.0661 in) shim.
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Page 504 of 1395

78 mm SHIM
Part NumborThickness
23941 - P16 - 0001.20 mm (0.0472 in)
23942-P16-0001.23 mm (0.0484 in)
c23943-P16-000'1.26 mm (0.0496 in)
u23944-Pt6-0001.29 mm (0.0508 in)
23945-P16-0001.32 mm (0.0520n)
F23946- P16 - 0001.35 mm (0.0531n)
G23947-P16-0001.38 mm {0.0543n)
H23948-P16-0001.41 mm (0.0555n)
23949-P16-0001.44 mm (0.0567 in)
23950-P16-0001.47 mm (0.0579 in)
K23951 - P16 - 0001.50 mm {0.0591 in}
L23952-Pl6-0001.53 mm (0.0602 in)
M23953-P16-0001.56 mm (0.0614 in)
N23954-P16-0001.59 mm (0.0626 in)
o23955-P15-0001.62 mm (0.0638 in)
23956 - P16 - 0001.65 mm (0.0650 in)
23957-P16-0001.68 mm (0.066't in)
23958- P16 - 0001.71 mm (0.0673 in)
23959-P16-0001.74 mm {0.0685 in)
T23960-P16-0001.77 mm {0.0697 inl
23961 - P16 - 0001.80 mm (0.0709 in)
23962-P16-0001.83 mm (0.0720 in)
23963-P16-000'1.86 mm (0.0732 in)
X23964-P16-0001.89 mm (0.0744 in)
23965-P16-0001.92 mm (0.0756 in)
z23966-Pl6-0001.95 mm (0.0768 in)
23967-Pl6-0001.98 mm (0.0780 in)
AB23968-P16-0002.01 mm (0.0791 in)
23969-Pl6-0002.04 mm (0.0803 in)
AD23970 - Pl6-0002.07 mm {0.0815 in)
AE23971 - P16 - 0002.10 mm {0.0827 in}
23972-P16-0002.13 mm (0.0839 in)
23973-P16-0002.16 mm (0.0850 in)
AH23974-P16-0002.19 mm (0.0862 in)
AI23975-P16-0002.22 mm 10.087 4 inl
AJ23976-Pl6-0002.25 mm {0.0886 in}
AK23977-P16-0002.28 mm {0.0898 in)
23978-Pl6-0002.31 mm (0.0909 in)
23979-Pl6-0002.34 mm (0.0921 in)
AN23980-P16-0002.37 mm (0.0933 in)
7, Check the thrust clearance in the manner described
Delow.
NOTE: Measurement should be made at normal
room temperature.
-1. Install the 78 mm shim selected and oil guide
plate in the transmission housing.
78 mm SHIM
OIL GUIDE PLATE
Install the spring washer and washer on the
ball bearing.
NOTE:
. Clean the spring washer, washer and thrust
shim thoroughly before installation.
. Install the spring washer, washer and thrust
shim properly.
WASHER
g
,-g
SPRTNG*ASHER
Install the mainshaft in the clutch housing.
Place the transmission housing over the main-
shaft and onto the clutch housing.
Tighten the clutch and transmission housings
with several 8 mm bolts.
NOTE: lt is not necessary to use sealing agent
between the housings.
Tap the mainshaft with a plastic hammer.
-2.
-5.
(cont'd)
13-65
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