Page 649 of 2189
3. Measure the clearance between 4th gear and the
spacer collar.
Standard: 0.06 - 0.21 mm (0.002 - 0.008 inl
Servic€ Limit: 0.3 mm (0.01 inl
It 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 in}
4TH GEARSIDE
SPACER COLLAE
5. lf distance @ is not within the standard. replace the
spacer collar with a new one. lf distance O is within
the standard. measure the thickness of 4th gear'
Standard: 31.12-31'17 mm {1.237 - 1.239 inl
Service Limh:31.3 mm (1.232 in)
lf the thickness of 4th gear is less than the ser-
vice llmit, 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,
(cont'd)
13-69
Page 650 of 2189
Mainshaft Assembly
Clearance Inspection (cont'dl
6. Measure the clearance between sth gear and
spacer collar.
Standard: 0.05 - 0.21 mm (0.002 - 0.008 inl
Service limit: 0.3 mm 10.012 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
the
1.
5TH GEAB
\
8. lf distance (E is not within the standard, replace the
spacer collar with a new one.
lf distance @ is within the standard, measure the
thickness of 5th gear.
Standard: 31.12-31.47 mm {1.237 - 1.239 in}
Service Limit:31.3 mm {1.232 in)
lf the thickness of 5th gear is less than the ser-
vice limit, replace sth gear with a new one.
lf the thickness of 5th gear is within the servace
limit, replace the 5th synchro hub with a new
one.
u,a
5TH GEAR
3-70
SPACER COLLAB
Page 651 of 2189
Disassembly
1. Remove the ball bearing using a bearing puller as
shown.
BEABING PULLER
BALL BEARING
CAUTION: Remove the synchro hubs using a ptess
and the sts€l blocks as shown. Use of a i8w'type
puller can cause damage to th€ gear teeth.
Support sth gear on steel blocks, and press the
mainshaft out of the sth synchro hub, as shown.
3. Support 3rd gear on steel blocks, and press the
mainshaft out of the 3rd/4th svnchro hub, as shown.
13-71
Page 652 of 2189
Mainshaft Assembly
Inspection
1. Inspect the gear surfaces and the bearing surfaces
for wear and damage. then measure the mainshaft
at points A, B, and C. lf any parts of the mainshaft
are less than the service limit, reDlace mainshaft
with a new one.
Standard:
A: 27.987 - 28.000 mm {1.1018 - 1.1024 in}
B: 37.98i1 - 38.fi)0 mm (1.,|!t5,0 - 1.4960 inl
Ci27.977 - 27.990 mm 11.1015 - 1.1020 inl
Service Limit:
A; 27.940 mm {1.1000 in}
B: 37.930 mm (1./{133 in)
C:27.930 mm (1.0996 inl
(
2. Inspect for runout. lf the runout is more than the
service limit, replace the mainshaft with a new one,
Standard: 0.02 mm 10.0008 inl max.
Ssrvice Limit: 0.05 mm 10.002 inl
NOTE: Suooort the mainshaft at both ends as
shown.
t
Inspect for wearano oamage.
Inspect oil passages tor clogging.
13-72
Page 653 of 2189

Reassembly
CAUTION:
. Press the 3rd/4th and the 5th synchro hubs on the
mainshaft without lubrication.
o When installing the 3rd/,lth and the sth synchro
hubs, support the mainshaft on steel blocks, and
installthe synchro hubs using a prsss.
. Install the 3rd/4th and the sth synchro hubs with a
maximum plessur€ of 19.6 kN (2,000 kg, 14,466 lbl.
NOTE: Refer to page 13-67 for reassembly sequence.
1, Support 2nd gear on steel blocks, then install the
3rd/4th synchro hub using the special tools and a
press, as snown.
NOTE:
. After installing. check the operation of the
3rd/4th synchro sleeve and hub.
. Assemble the 3rd/4th synchro hub and sleeve
together betore installing them on the mainshaft.
Closed end
3RD/4THSYNCHRO HU3DBIVER, 10 mm l.O.07746 - 00301U)
/ lrrlcHlileNr. ss .- t.o.07746 - 0030,100
l.
3RD/{THSYNCHROSLEEVE
2ND GEAR
2. Install the sth synchro hub using the special tools
and a press as snown.
DRIVER, {0 mm l.O.07746 - 0030100
ATTACHMENT,35 mm LD.
sTH SYNCHRO HUB
07716 - 0030,100
3. Install the angular ball bearing using the special
tools and a press as shown.
PRESS
+
DRIVER, 40 mm LD.0?7a6 - It030100
Page 654 of 2189
Gountershaft Assembly
Index
DAMPER
ST GEARInspection, page 13-75
EALL EEARING
and operation.
NEEDLE BEARINGlnspect for wearano operaton.
5TH GEAR
4TH GEAR
3RD GEAR
NOTE:
3
The 4th and sth gears are installed with a press.
Prior to reassembling, clean all the parts in solvent, dry them and apply lubricant to any contact surfaces. The 4thand 5th gears. however, should be installed with a press before lubricating them.
REVERSE GEAR
LOCKNUT Replace108"0-108N.m
i11.0 - 0- l1.0kgtm,180-0-80lbttr
WASHER
DISTANCECOLLAR
COUNTERSHAFTInspection, page 13-77
NEEDLE BEARING
and operatron,
Inspection, page 13-75
NEEDLE BEARING
ano operatron,
SPACER
FRICTION DAMPER
DOUBLE CONE
Inspection, page 13 81
SYNCHRO SPRING
13-74
Page 655 of 2189

I
I
I
,'
I
Clearance Inspection
1. Measure the clearance between the 1st gear and
distance collar.
Standard: 0,045 - 0.205 mm
10.002 - 0.008 in)
Service Limit: 0.25 mm (0.01 inl
2. lf the clearance exceeds the service limit. measure
the thicknesses of 1st gear.
lST GEAR
Standard: 29.45 - 29.50 mm {1.159 - 1.161 in}
DISTANCE COLLAR
Standard:@ 36.5 mm (1.4i1in)
@ ,12.0 mm (1.65 in)
@ 30.0 mm (1.18 in)
lf the thicknesses of 1st gear and distance collar
are less than the standard, replace with a new
one.
lf the thicknesses of 1st gear and distance collar
are within the standard, replace the lsv2nd syn-
chro hub with a new one.
3. Measure the clearance between
gears.
Standard: 0.07 - 0.14 mm
(0.003 - 0.006 inl
Servico Limii: 0.24 mm (0.009 in)
the 2nd and 3rd
3RD GEAR
2ND GEAR
4. lf the clearance exceeds the service limit, measure
the thicknesses of znd gear and spacer.
2ND GEAR
Standard: 28.92 - 28.97 mm (1.139 - 1.1't1 inl
'-.
ll-=Jl
71 il
SPACER COLLAR
Standard: 29.07 - 29.09 mm {1.1it4 - 1.1,15 inl
lf the thicknesses of 2nd gear and spacer are less
than the standard, replace with a new one.
lf the thicknesses of 2nd gear and spacer are
within the standard, replace the lsv2nd synchro
hub with a new one.
13-75
Page 656 of 2189
Gountershaft Assembly
Disassembly
1. Securely clamp the countershaft assemblv in a
bench vise with wood blocks.
2. Raise the locknut tab from the groove in the coun-
tershaft, then remove the locknut and the spring
washer.
Remove the ball bearing using a bearing pulle. asshown.
BEARING PULLER
BALL BEARING
13-76
4, Remove the bearing outer race, then remove theneedle bearing using a bearing puller as shown.
BEARING PULLEF
BEARING
CAUTION: Romove the gears using a pr63 and the
stesl blocks as shown, Use of a ,aw-typo puller can
cause damage lo lhe gear tooth.
Support 4th gear on steel blocks, and press thecountershaft out of sth and 4th gears, as shown.
sTH GEAF
{TH GEAR
.(
a
ItI