Page 593 of 2189

Reverse Shift Holder
)
Glearance Inspection
1.Measure the clearance between the reverse shift
fork and sth/reverse shift piece pin.
Standard: 0.05 - 0.35 mm 10.002 - 0.01,1 inl
Service Limit 0.5 mm (0.02 in)
lf the clearances are more than the service limit.
measure the widths of the groove in the reverse
shifi fork.
Standard: 7.05 - 7.25 mm (0.278 - 0.285 inl
lf the widths of the grooves are not within the
standard, replace the reverse shift holder with a
new one.
lf the width of the grooves are within the stan-
dard, replace the sth/reverse shift piece with a
new one,
\
t
REVERSE
REVERSE SHIFT HOLDER
3. Measure the clearance between the reverse idler
gear and the reverse shift fork.
Standard: 0.5- 1.1 mm {0.02 - 0.0,1in)
Service Limii: 1.8 mm 10.07 inl
REVERSE IDLER GEAR
lf the clgarances is more than thg service limit, mea-
sure the width of the reverse shift fork.
Standlrd: 12.7 - 13.0 mm {0.5110 - 0.512 in}
lf the width is not within the standard, replace
the reverse shift holder with a new one.
lf the width is within the standard, replace the
revsrse idler gear with a new one.
REV€RSE SHIFT FORK
REVERSE SHIFT FORK
REVERSE SHIFT HOLOER
13-13
Page 594 of 2189
Reverse ldler Gear
Mainshaft, Cou ntershaft,
Shift Fork
Removal
1. Remove the reverse shift holder.
REVERSE SHIFTHOLOER
Remove the reverse id ler
idler gear.
gear shaft and reverse
REVERSE IDLERGEAR SHAFT
13-14
Disassembly
1. Remove the interlock guide bolt from under the
clutch housing.
SHIFT ARM 8ATTACHING BOLT
CLUTCHHOUSING
INTERLOCK GUIDE BOLT
Remove the shift arm B attaching bolt.
Remove the mainshaft and countershaft assemblies
with the shift fork from the clutch housinq.
NOTE: Before removing the mainshaft and counter-
shaft assemblies, tape the mainshaft splines to pro-
tect the seal.
Tape the mainshaftsplines.
WASHER
SPRINGWASHER
Page 595 of 2189

Mainshaft Assembly
I
lndex
Note the following during reassembly:
. The 3rd/4th and sth svnchro hubs are installed with a press
. Install the angular ball bearing with the thin-edge outer race facing the sth synchro hub
. Install the ball bearing with the ball cage facing up
prior to reassembling, clean all the parts in solvent, dry them and apply lubricant to all contact surfaces the 3rd/4th
and sth svnchro hubs.
Ballcage faces uP.
Thin edge of outerrace laces down.
3RD/4TH SYNCHRO SLEEVE
page 13'27
SYNCHRO SPRINGSYNCHRO RINGInspection,page 13-28
BALL BEARING {*1)ANGULAR BALL BEARING ('2)
Check for wear and operataon.Note the direction ot installation
5TH SYNCHROSLEEVElnspection, page 13-27
SYNCHRO HUB
SYNCHRO RINGInspection, pase 13 28
sTH GEARInspection, page 13-17
3RD GEARlnspection, page 1 3-1 6
34 x 39 x 27.5 mmNEEDLE BEARINGCheck for wearano opetaflon,
MAINSHAFTInspection, page 13-18
CHAMFEB
32 x 37 x 23.5 mmNEEDLE BEARINGCheck for wear andoperation.SPACER COLLABInspection, page 1316
34x39x23mmNEEDLE EEARINGCheck for wearand operation,
4TH GEARrnspeclron,
*1: D16Y7 engine*2: D16Y5, D16Y8 engines
page 13'16RINGInspectaon, page 13 28
SPRING
13-15
Page 596 of 2189

Mainshaft Assembly
Clearance Inspection
NOTE: lf replacement is required, always replace the
synchro sleeve and hub as a set.
1. Measure the clearance between 2nd and 3rd gears,
Standard: 0.06 - 0.21 mm 10.002 - 0.008 in)
Service Limit: 0.33 mm (0.013 inl
2ND GEAR
3RO GEAR
lf the clearance is more than the service limit. mea-
sure the thickness of 3rd gear,
Standard: 3O.22 - 3O.27 mm
{1.190 - 1.192 in}
Servica Limit: 30.15 mm (1.187 inl
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 3rdl4th synchro hub with a new
one.
/ -J-il -)frl"-
TI
Hl I
3RD GEAR
13-16
3. Measure the clearance between 4th gear and thespacer collar.
Standard: 0.06 - 0.19 mm 10.002 - 0.007 in)
Service Limit: 0.31 mm 10.012 in)
+
4TH GEAR
INDICATOR
If
-r ''==f{'
5TH GEAR
lf the clearance is more than the service limit, mea-
sure distance @ on the spacer collar.
Standard: ?2.V. - 22.86 mm
10.8!t8 - 0.900 in)
Sorvica Limii: 22.81 mm {0.8t8 inl
4TH GEARSIDE
SPACERCOLLAR
lf distanc€ @ is less than the service limit, replace
the spacer collar with a new one,
lf distance @ is within the service limit, measure
the thickness of 4th gear.
Standard: 30.12 - 30.17 mm(1.186 - 1.188 inl
Servic6 Limh: 30.05 mm (1.1&l inl
4TH GEAR
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 3rdl4th svnchro hub with a newone,
di
Page 597 of 2189

T
6. Measure the clearance between the spacer collar
and sth gear.
Standard: 0.06 - 0.19 mm 10.002 - 0.007 inl
Service Limit: 0.31 mm (0.012 inl
4TH GEAR
DIALINDICATOR
I
-<=q,
7.
5TH GEAR
lf the clearance is more than the service limit, mea-
sure distance @ on the spacer coilar
Standard: 23.53 - 23.56 mm
10.926 - 0.928 in)
Sowice Limit 23.51 mm {0.926 in}
SPACERCOLLAR
sTH GEARSIDE
lf distance @ is less than the service limit, replace
the spacer collar with a new one,
lf distance @ is within the service limit, measure
thickness of 5th gear.
Siandatd:28.1:2 - 28.17 mm
11.119 - 1.121 in)
Servica Limit: 28.35 mm (1.116 inl
sTH GEAR
lf the thickness of 5th gear is less than the ser-
vice limit, replace sth Oear with a new one.
lf the thickness of sth gear is within the service
limit, replace the 5th synchro hub with a new
one.
Disassembly
1. Remove the ball bearing using a bearing puller as
shown.
BEARING PULLER(Commercially
availablel
CAUTION: Remov€ ths synchro hubs using a press
and steel blocks as shown. Us€ of a iaw-type pullel
can caus€ damage lo the gear teeih.
Support 4th gear on steel blocks. and press the
mainshaft out of the sth svnchro hub as shown.
{cont'd)
13-17
Page 598 of 2189
Mainshaft Assembly
Disassembly (cont'd)
3. Support the 3rd gear on steel blocks, and press the
mainshaft out of the 3rd/4th synchro hub as shown.
13-18
Inspection
'1. Inspect the gear surface and bearing surface for
wear and damage. then measure the mainshaft atpoints A, B, C, and D.
Siandard: A: 21.987 - 22.000 mm
10.8656 - 0.8661 inl
B: 26.980 - 26.993 mm
11.0622 - 1.0627 inl
C: 33.98,1- 34.000 mm(1.3380 - 1.3385 in)
D: 25.977 - 25.990 mm
|.1.0227 - 1.0232 inl
Service Limit: A: 21.930 mm 10.8634 inl
B: 26.930 mm {1.0602 in}
C: 33.930 mm (1.3358 in)
D: 25.920 mm (1.0205 in)
Check for wear and damage
lf any part of the mainshaft is less than the service
limit, replace it with a new one.
2. Inspect for runout.
Standardi 0.02 mm (o.(Xtl in) max.
S€rvice Limii: 0.05 mm (0.002 in)
NOTE: Support the mainshaft at both ends as
snown.
lf the runout is more than the service lirnit, reolace
the mainshaft with a new one.
Y
Page 599 of 2189
I
)r'
Reassembly
CAUTION: When installing the 3rd/4th and 5th synchro
hubs, support th€ shaft on steel blocks, and insiall the
synchro hubs using a press.
NOTE: Refer to page 13-15 for reassembly sequence.
1. Support 2nd gear on steel blocks' then install the
3rd/4th synchro hub using the special tools and a
oress.
ATTACHMENT,35 mm LO.07746-OO3O/+OO
' ,2I{D GEAR
Install the 3rd/4th synchro sleeve by aligning the
stops of the 3rdl4th synchro sleeve and hub.
NOTE; After installing, check the operation of the
3rd/4th svnchro hub set
SYf{CHRO SLEEVE
3. Install the sth
ano a press.
synchro hub using the special tools
DRIV€R, 40 mm I O.
07746 -0030' 100
ATTACHMENT,30 mm l.D.07746 -O030300
sTH SYNCHRO HU8
Install the ball bearing in the direction shown using
the special tools and a Press.
DRIVER, iO mm l.D.
07746 - lxxlollx'
ATTAGHMENT, 30 mm l.D.
077i16 - 00303qt
BAI-L BEARING
Ball cage faces uP
*1: D16Yt engane*2: Dl6Y5, D16Y8 6ngines
13-19
Page 600 of 2189

Countershaft Assembly
Index
I.r
NOTE:
-re
The 3rd, 4th, and sth gears are installed with a press.
Prior_to reassembling, clean all the parts in solvent, dry them and apply lubricant to all contact surfaces except the3rd, 4th, and 5th gears.
Snap ring groove faces up.
LOCKNUT Replace.108-O- 108 N.m
I 11.0-O-11.0 kst.ml
I 79.6-0- 79.6 lbt.ft I
SYNCHRO SPRING
SYNCHRO RINGInspectaon, page 13-28
FRICTION DAMPER
Thin edge ol outerrace faces down.
Check for wear andoperatron,
/ BALL EEAR|NG t*1)
t NEEDLE BEARTNG (.2)
Check for wearand operatron,
WASHERBEARING
GEAR
4TH GEAR
3RD GEAR2ND GEAR
FRICTION DAMPER
SYNCHRO SPRING
SYNCHRO RINGInspection, page 13-2836 x 41 x 25.5 mmNEEDLE BEARINGCheck for wear and operataon.
Inspection, page 13-23
1ST GEARlnspection, page 13 21, 28lnspection, page 13-21, 2839x44x27m mNEEDLE BEARIfI'GCheck for wear andoperation.
SPACER COLLARInspection, page 13-21
REVERSE GEARlnspection, page 13 27
1ST/2ND SYNCHRO HUB
*1: D'16Y7 engine*2: D16Y5, D16Y8 engines
13-20