HONDA CIVIC 1999 6.G Workshop Manual

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

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

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

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

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

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

t
Inspection
1. Inspect the gear surfaces and the bearing surfaces
for wear and damage, then measure the counter-
shaft at points A, B, and C. lf any parts of the coun-
tershaft are less than the service limit. reDlace coun-
torshaft with a new one.
Standard:
A: 2/t.980 - 2{.993 mm (0.9835 - 0.9&O in}
B: 35.984 - 37.000 mm {1.4561 - 1.4567 in)
G: 33.fiD - 33.015 mm {1.2992 - 1.2998 in)
Sorvicc Limit:
Ar 2/t.9't0 mm 10.9819 inl
B: 36.930 mm {1.'l5qt in}
C: 32.950 mm {1.2972 in}
Insp€ct for wear
Inspect oil passage for clogging.
13-77
2. Insoect for runout. lf the runout is more than the
service limit, reolace the countershaft with a new
one.
Strndard: 0.02 mm {0.(x)08 in) max.
Servic. Limit 0.05 mm (0.002 in)
NOTE: SuoDort th€ countershaft at both ends as
shown.
Rotate lwo complelerevotutons.

Gountershaft Assembly
Reassembly
CAUTION:
. Pross 4th and sth gears on the countershaft without
lubrication.
. When installing ilth and sth geafs, support the shaft
on steel blocks, and install the gears using a press.
. Install ilth and sth gear with a maximum pressure of
25.5 kN (2,600 ksf, 18,806lbf).
NOTE; Refer to page 13-74 for reassembly sequence.
'1. Install the distance collar and the needle bearinos
on the countershaft.
COUNTERSHAFT
Install the friction damper, the synchro ring, and the
synchro spring on 1st gear.
Install the 1sv2nd synchro hub by aligning the fin-
gers on the friction damper and the grooves in the
1sv2nd synchro hub, as shown.
lST/2NO
13-78
lSI GEAR
insteps2-6onthe
{
4.lnstall the reverse gear.
Install the synchro spring. and the double cone
synchro as shown.
Assemble the friction damper, the needle bearing,
and 2nd gear, then install them by aligning the fin-gers on the friction damper and the grooves in the
1sv2nd synchro hub with the fingers of the double
cone synchro and the grooves on 2nd gear, as
snown.
Installthe spacer.
FRICTION DAMPER
Install the parts assembled
countershaft.
;
2ND GEAR

9. Support the countershaft on a steel block, and
install 4th gear using the special tools and a press.
as 5nown.
ATTACHMENT,35 mm LD.07746 - 0030400
Support the countershaft on a steel block, and
install 5th gear using the special tools and a press,
as shown.
ATTACHMENT, 30 mm I,D,07746 - 0030300
10.
\
'1'1. Install the needle bearing, then install the ball bear-
ing using the special tools and a press as shown.
PRESSDRIVER,40 mm LD.07746 - 0030100
ATTACHMENT,30 mm LD.07746 - 0030300
J.-12.Securely clamp the countershaft assembly in a
bench vise with wood blocks.
lnstall the spring washer, tighten the locknut, then
stake the locknut tab into the groove.
LOCKNUT
108- 0- 108N.m 111.0- 0- 11.0kgt.m,
80+ 0* 80 lbf'ftl
WOOD BLOCKS
13-79

Synchro Sleeve, Synchro Hub
Inspection
1,Inspect gear teeth on all synchro hubs and synchro
sleeves for rounded off corners. which indicates
Install each synchro hub in its mating synchro
sleeve and check for freedom of movement.
NOTE: lf replacement is required, always replace
the synchro sleeve and synchro hub as a set.
Installation
When assembling the synchro sleeve and synchro hub,
be sure to match the three sets of longer teeth (120
degrees apart) on the synchro sleeve with the three sets
of deeper grooves in the synchro hub.
CAUTION: Do noi install tho synchro sleeve with its
longer toeth in the synchro hub slots, because it will
damage the spring ring.
SYNCItROSLEEVCLONGER TEETH
13-80