1999 HONDA CIVIC main seal

Clutch Housing Bearing
Replacement
Mainshaft:
L Remove the ball bearing using the special tools asshown.
3/81_ 16 SLIDE HAMMER{commercially available)
ADJUSTAELE BEARINGPULLER, 25 - 40 mm07736 - A01000A
2. Remove the oil seal from the clutch housino.
13-86
CLUTCH HOUSING
BALL BEARING
(
3. Drive the new oil seal into the clutch housing usingthe special tools as shown.
HANOLE07749 - 0010000
ATTACHMENT, 42 x 47 mm07746 - 0010300
4.
OIL S€ALReplace.
Drive the ball bearing into the clutch housing using
the specialtools as shown.
HANDLE07749 - 0010000ATTACHMENT, 52 x 55 mm07746 - 0010il{)0
PILOT, 28 mm07746 - 0041100

72 mm Thrust Shim
t
Part NumberThickness
23931 - P21 0000.60 mm {0.0236 in}
23932-P21 -0000.63 mm 10.0248 in)
c23933 P21 - 0000.66 mm (0.0260 in)
D23934 - P21 0000.69 mm (0.0272 in)
E2393s-P21-0000.72 mm (0.0283 in)
F23936-P21 -0000.75 mm (0.0295 in)
G23937 -P21-O000.78 mm (0.0307 in)
23938-P21 -0000.81 mm (0.0319 in)
23939-P21 -0000.84 mm (0.0331 in)
J23940-P21 -0000.87 mm (0.0343 in)
K23941 P21 - 0000.90 mm (0.0354 ini
L23942 - P21 0000.93 mm (0.0366 in)
23943-P21 -0000.96 mm 10.0378 in)
N23944 - P21 -0000.99 mm (0.0390 in)
o23945 - P21 0001.02 mm (0.0402 in)
P23946 - P21 0001.05 mm (0.0413 in)
o23947 - P2l 0001.08 mm (0.0425 in)
R23948-P21 -0001.'1 'l mm (0.0437 in)
S23949 - P21 0001.14 mm (0.0449 in)
T23950 - P21 0001.17 mm (0.0461 in)
23951 - P21 -0001.20 mm (0.0472 in)
23952 - P21 -0001.23 mm (0.0484 in)
23953-P21 -0001.26 mm (0.0496 in)
X23954-P21 -0001.29 mm (0.0508 in)
23955 - P21 -0001.32 mm (0.0520 in)
z23956-P21 -0001.35 mm (0.0531 in)
23957-P21 -0001.38 mm 10.0543 in)
AB23958 - P21 -0001.41 mm (0.0555 in)
AC23959 P21 - 0001.44 mm {0.0567 in)
23960 - P21 0001.47 mm (0.0579 in)
AE23961 - P21 -0001.50 mm {0.0591 in)
23962 P21 - 0001.53 mm {0.0602 in)
AG23963-P21 -0001.56 mm (0.0611in)
AH23964-P21 -0001.59 mm {0.0626 in)
23965-P21 -000'1.62 mm {0.0638 in)
23965-P21 - 0001.65 mm (0.0650 in)
AK23967-P21 -0001.68 mm {0.0661 in)
23968 - P21 -0001.71 mm 10.0673 in)
23969 P21 - 0001.74 mm {0.0685 in)
AN23970-P21 -0001.77 mm {0.0697 in)
AO23971 - P21 -0001.80 mm (0.0709 in)
7. lnstallthe thrust shim selected and oil guide plate in
the transmission housing.
72 mm THRUSTOIL GUIDE PLATE
TRANSMISSIONHOUSING
8. Install the spring washer and washer on the ball
beaflng.
NOTE:
. Clean the spring washer, washer and thrust shim
throughly before installation.
. Install the spring washer, washer and thrust
shim properlY.
-WASH€R-<]>-.-'
x -sPRtNG WASHER
-.-sK((9r'
lnstallthe mainshaft in the clutch housing.
Place the transmission housing over the mainshaft
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.
8 x 1.25 mm
27 N.m (2.8 kgf.m. 20 lbf'ft)
Tap the mainshaft with a plastic hammer.
(cont'd)
9.
10.
'I l.
12.
13-89

Transmission
ReassemblY
1. Install the new oil seal
2. Set the change Piece.
3. Install the shift rod
4. Install the steel ball' the spring, and the set screw'
5. Install the spring washer and change piece attach-
ing bolt.
6. Install the shift rod boots.
8x1.0mm31 N.m 13.1 kg-m,22lb-ltl
CHANGEPIECE
@:4OIL SEALReplace.SPRINGWASHER
7. Install the oil chamber Plate'
6 x '1.0 mm12 N.m (1.2 kg-m,9lb-ft|
SPRING
, /L.256fim B()(
@ / t't o'ti"l I
{zw"y-6@
q
10.
Set the spring washer and the washer'
lnstall the mainshaft, the countershaft, and the shift
fork assemblies.
NOTE: Align the finger of the interlock with the
groove in the shift fork shaft.
SHIFT FORKS
13-91

The following symptoms can be caused
by improper repair or assembly
Check these items,on th€^ ltems on thePROBABLE CAUSE DUE TO NOTES ListIMPROPER REPAIR List
Vehicle creeps in N position.R1, R2
Vehicle does not move in &l or Pll position.R4
Transmission locks up in E position.R3, R11
Excessive drag in transmission.R6K,R
Excessive vibration, rpm related.R7
Noise with wheels moving onlY.R5
Main seal pops out.R8
Various shifting problems.R9, RlO
PROBABLE CAUSE DUE TO IMPROPER REPAIR
lmproper clutch clearance.
lmproper gear clearance.
Park lever installed upside down.
one-way {sprag) clutch installed upside down.
Reverse selector hub installed upside down.
ATF pump binding.
Torque converter not fully seated in ATF pump.
Main seal improperly installed.
Springs improperly installed.
Valves improperly installed.
Shift fork bolt not installed.
14-11

Symptom-to-Component Chart
Hydraulic System (cont'dl
G.
n,
set idle rpm in gear to specified idle speed. lf still no good, adjust motor mounts as outlined in enginesection of this manual.
lf the clutch pack is seized or is excessively worn. inspect the other clutches for wear, and check the orificecontrol valves, CPC valve and linear solenoid for free movement.
lf the linear solenoid is stuck, inspect the clutches for wear.
lmproper alignment or main valve body and torque converter housing may cause ATF pump seizure. Thesymptoms are mostly an rpm-related ticking noise or a high-pitched squeak.
lf the l st clutch feed pipe guide in the end cover is scored by the mainshaft, inspect the ball bearing forexcessive movement in the transmission housing. lf oK, replace the end cover as it is dented. The o-rinounder the guide is probably worn.
Replace the mainshaft if the bushing for the 4th feed pipe is loose or damaged. lf the 4th feed pipe is danFaged or out of round, replace the right side cover.
Replace the mainshaft if the bushing for the 1st feed pipe is loose or damaged. lf the 1st feed pipe is darn-aged or out of round, replace it.
A worn or damaged sprag clutch is mostly a result of shifting the transmission inthe wheels rotate in reverse, such as rocking the vehicle in snow.
or E position while
Inspect for damage and wear:
1. Reverse selector gear teeth chamfers.
2. Engagement teeth chamfers of countershaft 4th and reverse gear.
3. Shift fork for scuff marks in center.
4. Differential pinion shaft for wear u nder pin ion gears.
5. Bottom of 3rd clutch for swirl marks.
Replace items 1,2,3 and 4 if worn or damaged. lf transmission makes a clicking, grinding orwhirring noise,also replace mainshaft 4th gear, reverse idler gear. and countershaft 4th gear in addition to 1, 2, 3 or 4.lf differential pinion shaft is worn, overhaul differential assembly, and replace ATF strainer, and thoroughlyclean transmission, flush torque converter, cooler and lines.lf bottom of 3rd clutch is swirled and transmission makes gear noise, replace the countershaft and final drivengear.
Be very careful not to damage the torque converter housing when replacing the main ball bearing, you
may also damage the ATF pump when you torque down the main valve body. This will result in ATF pumpseizure if not detected. Use the oroper roors.
Install the main seal flush with the torque converter housing. lf you push it into the torque converterhousing until it bottoms out, it will block the fluid return passage and result in damage.
See flushing procedure, page 14-187 and 188.
lf the large clutch piston O-ring is broken, inspect the piston groove for rough machining.
lf the l-2 shift valve is stuck closed, the transmission will not upshift. lf stuck open, the transmission hasno 1st gear.
lf the znd orifice control valve is stuck. inspect the 2nd and 3rd clutch oacks for wear.
lf the 3-4 orifice control valve is stuck, inspect the 3rd and 4th clutch oacks for wear.
lf the clutch pressure control valve is stuck closed, the transmission will not shift out of 1st gear.
lf the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump and differentialpinion shaft. lf both are OK and no cause for the contamination is found, replace the torque converter.
Inspect the frame for collision damage.
14-112

6. Remove the transmission housing mounting bolts
and the rear engine mounting bolt.
Disconnect the shift control solenoid, the linear sole-
noid, and the mainshaft speed sensor connectors'7.
SHIFT CONTROLSOLENOID CONNECTORLINEAR SOLENOIDCONNECTOR
MOUNTING BOLTS
BRACKET
8. Remove the drain plug, and drain the automatic
transmission fluid (ATF). Reinstall the drain plug
with a new sealing washer.
DRAIN PLUG18 x 1.5 mm'9 N m t5 o kgf'm' 36 lbf'ft|
9. Remove the splash shield.
Replace.
SPLASH SHIELD
{cont'd)
14-123

O ROLLER
O COLLAR
O o-RING Replace.
@ FEED PIPE FLANGE
@ O-RING Replace.
@ SNAP RING
€) 3RD CLUTCH FEED PIPE
€) COUNTERSHAFT LOCKNUT (FLANGE NUT)
23 x 1.25 mm Replace.
o coNlcAL SPRING WASHER Replace.
@ PARK GEAR
@ ONE.WAY CLUTCH
@ COUNTERSHAFT lST GEAR
@ NEEDLE BEARING
@ COUNTERSHAFT lST GEAR COLLAR
@ o-RlNGs Replace.
@ END covER GASKET Replace.
E) DOWEL PINS
@ PARK PAWL STOP
@ LocK WASHER Replace.
@ PARK STOP Selective part
€D PARK LEVER
@ PARK LEVER SPRING
€D DRAIN PLUG
€) SEALING WASHER Replace
@ o-RING Replace.
@ COUNTERSHAFT SPEED SENSOR
@) PARK PAWL
@ PARK PAWL SPRING
@ PARK PAWL SHAFT
@ LINEAR SOLENOID ASSEMBLY
@ LINEAR SOLENOID GASKET REPIACE.
@) END COVER
@ lsT CLUTCH FEED PIPE
@ O-RINGS Replace.
@ FEED PIPE FLANGE
C) SNAP BING
@ MAINSHAFT LOCKNUT (FLANGE NUTI 21 x 1 25 mm
Replace.
@ CONICAL SPRING WASHER RePlace
@) lST CLUTCH ASSEMBLY
@ o-RlNGs Replace.
€) THRUST WASHER
@) THRUST NEEDLE BEARING
@ NEEDLE BEARING
@ MAINSHAFT lST GEAR
@ MAINSHAFT lST GEAR COLLAR
@) ATF COOLER LINE
@ SEAUNG WASHERS Replace.
@ LINE BOLT
@ ATF DIFSTICK
@ ATF COOLER LINE
@ UNE BOLT
@ SEALING WASHERS Replace.
@ VEHICTT SPEED SENSOR
@ O-RING Replace.
TOROUE SPECIFICATIONS
Bolt/Nut No.Torque ValueSizeRemarks
6B
8F
12A.'l8D
2'tM
23C
'12 N'm (1.2 kgim,8.7 lbift)
14 N.m (1.4 kgf.m, 10 lbf'ft)
22 N.m (2.2 kgf.m, 16 lbf'ft)
28 N.m (2.9 kgf.m, 21 lbf'ft)
49 N.m (5.0 kgf.m, 36 lbf'ft)
78 N.m (8.0 kgf'm, 58 lbf'ft)
103 N.m {10.5 kgf'm,75.9 lbift)
6x1.0mm
6x1.0mm
8 x 1,25 mm
12 x 1.25 mm
18 x 1.5 mm
21 x 1.25 mm
23 x 1.25 mm
Line bolt
Drain plug
Mainshatt locknut: Left-hand threads
Countershaft locknut:
Left-hand threads
14-127

O LocK WASHER Replace,
O REVERSE SHIFT FORK
O COUNTERSHAFT REVERSE GEAR COLLAR
G) COUNTERSHAFT REVERSE GEAR
@ NEEDLE BEARING
@ REVERSE SELECTOR
O REVERSE SELECTOR HUB
@ COUNTERSHAFT 4TH GEAR
O NEEDLE BEARING
@ DISTANCE GOLLAR, 28 mm Selective part
O COUNTERSHAFT 2ND GEAR
@ THRUST NEEDIE BEARING
@ COUNTERSHAFT 3RD GEAR
@ NEEDLE BEARING
@ COUNTEBSHAFT 3RD GEAR COLLAR
@ THRUST NEEDLE BEAFING
O SPLINED WASHER
@ 3RD CLUTCH ASSEMBLY
@ O-RtNGs Replace.
@ COUNTERSHAFT
@ SNAP RING
@ THRUST WASHER
€) THRUST NEEDTE BEARING
@} MATNSHAFT 4TH GEAR/REVERSE GEAR
@i NEEDLE BEARINGS
@ THRUST NEEDLE EEARING
@) MAINSHAFT 4TH GEAR COLLAR
@ 2ND/4TH CLUTCH ASSEMBLY
@ o-RlNGs Replace.
@ THRUST WASHER,36.5 x 55 mm Sel€ctive part
@ THRUST NEEDLE BEARING
@ MAINSHAFT zND GEAR
@ NEEDLE BEARING
@ THRUST NEEDLE BEARING
@ MAINSHAFI
@ S€ALING RINGS, 35 mm
@ SEALING RING,29 mm
@} NEEDIE BEARING
@ SET RING
@ sHrFT CONTROL SOLENOID VALVE A/B ASSEMSLY
@ HARNESS CLAMP BRACKET
@ SHIFT COI,ITROL SOI"ENOID FILTER/GASKET Replace.
@ CONNECTOR BFACKET
@D TNANSMISSION HANGER
@ BREATHER CAP
@ MAINSHAFT SPEED SENSOR
@ MATNSHAFT SPEED SENSOR WASHER {Dl6Y' ongine}
@ O-RING Replace.
@ SNAP RING
@ MAINSHAFT TRANSMISSION HOUSING BEARING
@ OOUNIERSHAFT TRANSMISSION HOUSING BEARING
@ REVERSE IDLER GEAR SHAFT HOLDER ASSEMBLY
@ NEEDI.E BEARING
@ olL SEAL Replace.
@ SET RING, fll mm Selective part
@ rnANsMrssloN HouslNG
@ REVERSE IDI."ER GEAR
@ DowEL PINS
@ TRANSMISSION HOUSING GASKET Replace.
@ DIFFERENfIAL ASSEMBLY
@ OIL SEAL Replace.
@ TOROUE CONVERTER HOUSING
TOROUE SPECIFICANONS
Boh/Nut No.Torquo valueSizeRomarks
6B
10A
12 N.m {1.2 kgf.m,8.7 lbf.ft)
14 N.m (1.4 kgf'm, 10lbf'ft)
44 N.m (4.5 kgf.m, 33 lbf'ft)
6x1.0mm
6x1.0mm
10 x 1.25 mm
14-129