Page 458 of 1395

2.
Clearance InsPection
1. Measure the clearance between the shift arm A and
select arm.
Standard: 0.05 - 0 25 mm (0.002 - 0'01 inl
Service Limit:0.5 mm (0.02 in)
lf the clearance are more than the service limit,
measure the diameter of the select arm pln
Standard: 7.9 - 8.0 mm (0.311 - 0.315 in)
SELECTARM
lf the diameter of the select arm pin is less than
the service limit, replace the select arm wrtn a
new one.
lf the diameter of the select arm pin is within the
service limit, replace the shift arm A with a new
one.
SELECT ARM
SHIFT ARM A
SHIFT ARM C
SHIFT ARM B
3. Measure the clearance between the shift arm B and
shift arm c.
Standard: 0.05 - 0.25 mm (0.002 - 0.01 inl
Seryice Limit:0,5 mm (0.02 inl
lf the clearance are more than the service limit,
measure the diameter of the shift arm C.
Standard: 12.9 - 13.0 mm (0 508 - 0.512 in)
SHIFT ARM C
lf the diameter of the shift arm C is less than the
service limit, replace the shift arm C with a new
one.
lf the diameter of rhe shift arm C is within the
service limit, replace the shift arm B with a new
o ne.
13-19
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Page 459 of 1395

Reverse Shift Holder
Clearance Inspection
1.Measure the clearances between the reverse shift
holder and sth/reverse shift Diece Din.
Standard:A: 0.05 - 0.35 mm (0.002 - 0.014 in)
8: 0.4 - 0.8 mm 10.02 - 0.03 inl
Service Limit: A: 0.5 mm (0.02 in)
B: 1.0 mm 10.0,[ in]
2.lf the clearances are more than the service limit.
measure the widths of the groove in the reverse
shift holder.
Standard: A: 7.05 - 7.25 mm {0.278 - 0.285 inl
B: 7.4 - 7.7 mm (0.29 - 0.30 inl
lf the widths of the grooves are not within thestandard, replace the reverse shift holder with a
new one.
lf the widths of the grooves are within the stan-
dard, replace the sth/reverse shift piece with anew one.
PIECE PIN
REVERSE SHIFT HOLDER
13-20
3. Measure the clearance between the reverse idler
gear and reverse shift holder.
Standard: 0.5 - 1.1 mm {0.02 - 0.0i1 in}
Service Limit: 1.8 mm (0.07 in)
REVERSEIDLERGEAR
lf the clearance is more than the service limit. mea-
sure the width ot the reverse shift holder.
Standard: 13.0 - 13.3 mm (0.512-0521inl
It the width is not within the standard, replace
the reverse shift holder with a new one.
lf the width is within the standard, reolace the
reverse idler gear with a new one.
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Page 461 of 1395

Shift Fork Assembly
Clearance Inspection
NOTE: The synchro sleeve and synchro hub should be
reolaced as a set.
1. Measure the clearance between each shift fork and
its matching synchro sleeve.
Standard: 0.35 - 0.65 mm 10.01/t - 0.026 inl
Service Limit: 1,0 mm {0.039 inl
SHIFT FORK
2. lf the clearance exceeds the service limit. measure
the thickness of the shift fork fingers.
Standard:
lf the thickness of the shift fork finger is less than
the standard, replace the shift fork with a new
one.
lf the thickness of the shift fork tinger is within
the standard, replace the synchro sleeve with a
new one.
3rd/4th shift fork7.4 - 7.6 mm
(0.29 - 0.30 in)
1sv2nd shift fork
5th shift fork
6.2 - 6.4 mm(0.24 - 0.25 in)
3. Measure the clearance between the shift fork and
the shift arm A.
Standard; 0.2 - 0.5 mm (0.008-0.020 in)
Service Limit: 0.6 mm (0.02i1 in)
sTH/REVERSESHIFT PIECE ran,rru
lST/2NDSI{IFT FORK
lf the clearance exceeds the service limit, measure
the width of the shift arm A.
Standard: 12.9 - 13.0 mm 10.508 - 0.512 inl
lf the width of the shift arm A is less than the
standard, reDlace the shift arm A with a new one.
lf the width of the shift arm A is within the stan-
dard, replace the shift fork or shift piece with a
new ones.
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Page 462 of 1395

Mainshaft Assembly
lndex
Note the Iollowing during reassembly:
. The 3rd/4th, and 5th synchro hubs, and the ball bearing are installed with a press.
. Installthe angular ball bearing with the thin-edged outer race facing the stop ring
prior to reassembling, clean all the parts in solvent, dry them, and apply lubricant to any contact surfaces. The
3rd/4th and 5th svnchro hubs, however, should be installed with a press before lubricating them'
ANGULAR EALL BEARINGCheck for wear and operation.Note the directionof installation.SYNCHRO RINGInspection, page l3 37
SYNCHRO HUBlnspection, page 13-36
SYNCHRO SLEEVEInspection, page 13 36
SPRING
SYNCHRO
SYOP RING
TAPER RING
BEARINGCheck Ior wear and operataon.
COLLAR
RINGInspection, page 13-37
SYNCHRO SPRING
SYNCHRO HUBInspection, page 13_36
SYNCHRO SLEEVEInspection, page 13 36
SPFING
RINGInspection, page 13_37
GEARInspection, page 13_25, 37
COLLARInspection, page 13-24, 25
GEARInspection, page 13 24, 37
Inspection,page 13-37
3RD GEARInspeclton,page 13 24,37
BEARINGCheck for wearano operalton.
Inspection, page 13 26
NEEDLE BEARINGCheck for wear and operat,on.
13-23
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Page 463 of 1395

Mainshaft Assembly
Clearance Inspection
NOTE; lf replacement is required, always replace the
synchro sleeve and hub as a set.
L Support the bearing inner race with a socket. and
Dush down on the mainshaft.
2. Measure the clearance between 2nd and 3rd oears.
Siandard: 0.06 - 0.21 mm 10.002 - 0.008 in)
Servica Limit: 0.3 mm (0.01 in)
lf the clearance is more than the service limit, mea-
sure the thickness of 3rd gear.
Standard: 34.92 - 34.97 mm {1.375 - 1.377 in)
Service Limit 34.8 mm (1.37 in)
3RD GEAR
lf the thickness of 3rd gear is less than the ser-
vice limit, replace 3rd gear with a new one.
lf the thickness of 3rd gear is within the service
limit, replace the 3rd/4th synchro hub with a new
one.
13-24
+
4. Measure the clearance between 4th gear and the
spacer coIar,
Standard: 0.06 - 0.21 mm {0.002 - 0.008 in)
Servic€ Limit: 0.3 mm {0.01 inl
lf the clearance is more than the service limit, mea-
sure distance @ on the spacer collar,
Standard: 26.03 - 26.08 mm {1.025 - 1.027 inl
Service Limit: 26.01 mm {1.02,[ in]
o[-l:-g;;em
fp-rro.ERcoLLAR
6.tf distance @ is less than the service limit, replace
the sDacer collar with a new one.
lf distance @ is within the service limit. measure
the thickness of 4th gear.
Standard: 31.42 - 31.'17 mm 11.237 - L239 inl
Sarvicc Limit:31.3 mm {1.23 in)
lf the thickness of 4th gear is less than the ser-
vice limit, replace 4th gear with a new one.
lf the thickness of 4th gear is within the service
limit, replace the 3rd/4th synchro hub with a new
one,
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Page 465 of 1395
Mainshaft Assembly
Inspection
1.Inspect the gear surface and bearing surface for
wear and damage, then measure the mainshaft at
points A, B, and C.
Standard:
A (Ball bearing surface): 27.987 - 28.000 mm
11.1018 - 1.1024 inl
B (Needle bearing surfacel: 37.984 - 38.000 mm(1.4954 - 1.4961 inl
C {Bafl bearing surfacel: 27.977 -27.990 mm
(1.1015 - 1.1020 inl
Service Limit: A:27.94 mm (1.100 in)
B: 37.93 mm (1.'193 inl
C: 27.94 mm 11.100 inl
Inspect oil passages Ior clogging.
lf anv oart of the mainshaft is less than the service
limit. reolace it with a new one.
2. Inspect for runout.
Standard: 0.02 mm (0.0008 in) max.
Service Limit: 0.05 mm 10.002 inl
NOTE: Support the mainshaft at both ends
sh own.
lf the runout is more than the service limit, reDlace
the mainshaft with a new one.
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Page 466 of 1395
Reassembly
NOTE: Refer to page 13-23 for reassembly sequence.
1. Suppon 2nd gear on steel blocks as shown, then
install the 3rd/4th synchro hub using the special
tools and a press as shown.
NOTE: After installing, inspect the operation of the
3rd/ 4th synchro hub set.
PRESS
I
3RD/4THSYNCHRO HUB
DRIVER, ,l(} mm l.O.
07746 - 0030' 1 00
2.
2NO GEAR
Install the sth synchro hub using the special tools
and a press.
PRESS
I
DRlvER,40 mm l.D.
077{6 - 00301(x)
ATTACHMENT,35 mm l.D.077i16 - lx)3ollx)
sTH SYNCHBO HUB
3. Install the angular ball bearing using the special
tools and a oress. Note the direction of installation.
PRESS
I
077a6 - 0011x100
HANDLE07749 - 0010000
ATTACHMENT,/Vl x a7 mm
BALL BEARINGNote the dirediono{ installation.
13-27
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Page 467 of 1395
Countershaft Assembly
Index
NOTE:
3
The 3rd, 4th. and sth gear are installed with a press.
Prior to reassembling, clean all the parts in solvent, dry them, and apply lubricant to any contact surfaces. The 3rd,
4th, and sth gears, however. should be installed with a press before lubricating them.
LOCKNUT Replace.127-o-127N.m
113-0- 13kstmi
\94-0- 9.trbtft /
IST/2ND SYNCHRO HUBInspection, page 13 36
Check lor wear anddamage.
THRUST WASHERInspection, page 13-29
DAMPER
WASHER
AEARINGCheck for wear and ooeration.
BEARINGCheck for wear andoperation.
GEAR
4TH GEAR
3RD GEAR
GEAR
SPNING
DOUBI.f CONE
Inspection, page 13-37
1ST GEARInspection, page 13 29,37
BEARINGCheck tor wear and operation.
Inspection, page 13-30, 37
NEEDLE BEARINGCheck for wear and oPeration
SPACERSelection, page 13-30
DAMPERCheck for wear and damage.
DOUBLE CONE
Inspection, page 13-37
SPRING
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