1994 HONDA INTEGRA Mainshaft

72 mm Thrust Shim
Part NumberThickness
23931 - P21 -0000.60 mm (0.0236 in)
23932-P21 -0000.63 mm (0.0248 in)
c23933 - P21 -0000.66 mm {0.0260 in}
D23934-P21 -0000.69 mm (0.0272 in)
23935 - P21 -0000.72 mm (0.0283 in)
F23936-P21 -0000.75 mm (0.0295 in)
23937-P21 -0000.78 mm (0.0307 in)
23938-P21 -0000.81 mm (0.0319 in)
23939-P21 -0000.84 mm (0.0331 in)
J23940-P2r-0000.87 mm (0.0343 in)
K23941 - P21 -0000.90 mm (0.0354 in)
L23912-P21-OOO0.93 mm (0.0366 in)
M23943-P21 -0000.96 mm (0.0378 in)
N23944-P21 -0000.99 mm (0.0390 in)
o23915 - P21 -0001.02 mm (0.0402 in)
P23946 - P21 ,0001.05 mm (0.04'13 in)
o23947 -P21 -0001.08 mm (0.0425 in)
23948 - P21 0001.11 mm {0.0437 in}
s23919-P21 -0001.14 mm (0.0449 inl
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-P2r-0001.29 mm 10.0508 in)
23955-P21 -0001.32 mm 10.0520 in)
z239s6-P21 ,0001.35 mm (0.0531 in)
23957-P21 -0001.38 mm (0.0543 inl
AB23958 - P21 -0001.41 mm (0.0555 in)
AC23959 - P21 -0001.44 mm (0.0567 in)
AD23960 - P21 -0001.47 mm (0.0579 in)
AE23961 -P21 -0001.50 mm {0.0591 in)
23962 P21 ,0001.53 mm {0.0602 in)
23963-P21 -0001.56 mm {0.0614 in}
AH23964 - P2'1 -0001.59 mm (0.0626 in)
AI23965 - P2'1 -0001.62 mm (0.0638 in)
23966-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 -000'1.77 mm (0.0697 in)
AO23971 P21 0001.80 mm (0.0709 in)
7. Check the thrust clearance in the manner described
below.
NOTE: Carry out the measurement at normal room
remperarure.
-1. Install the thrust shim selected and oil guide
plate in th€ transmission housing.
?2 mm THRUSTotLPLATE
TRANSMISSIONHOUSING
Install the spring
ball bearing.
washer and washer on the
NOTE:
. Clean the spring washer, washer and thrust shim
throughly before instaliation.
. Install the spring washer. washer and thrust
shim properly.
a-=s-.r*os".^
.,,-B*^INGWASHER
-4.
Installthe mainshaft in the clutch housing.
Place the transmission housing over the main-
shaft and onto the clutch housing.
Tighten the clutch and transmission housings
with severalS 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)
13-39

Mainshaft Thrust Clearance
Adjustment (cont'd)
MAINSHAFT
-),.
"7t/'-
'..' .'i'
-7. Slide the mainshaft base over the mainshaft.
i.,
MAINSHAFT BASE07GAJ - PG20130
-8. Attach the mainshaft holder to the mainshaft as fol-
NOTE:
. Back-out the mainshaft holder bolt and loosen
the two hex bolts.
. Fit the holder over the mainshaft so its lip is
towards the transmission.
. Align the mainshaft holder's lip around the
groove at the inside ot the mainshaft splines,
then tighten the hex bolts.
MAINSHAFT HOLOERBOLT
f- t{-c
lnrTh l
ex
| \-_.r' ._/_/ lrl Borrs
L ___E_J
\MAINSHAFTHOLDER07GAJ - PG20110
MAINSHAFT BASE07cAJ _ PG20130
-9.Seat the mainshaft fully by tapping its end with a
plastic hammer.
-10.Thread the mainshaft holder bolt in until it just con-
tacts the wide surface of the mainshaft base.
- 1 1. Zero a dial gauge on the end of the mainshaft.
12.Turn the mainshaft holder bolt clockwise; stop turn-
ing when the dial gauge has reached its maximum
movement. The reading on the dial gauge is the
amount of mainshaft end play.
CAUTION: Turning the mainshaft holder bolt mor€
than 60 degrees after the needle ol the dial gauge
stops moving may damage the transmission,
DIAL GAUGE
MAINSHAFT HOLDER07GAJ - PG201r0
- 13.lf the reading is within the standard, the clearance is
correq.
lf the reading is not within the standard, recheck the
shim thickness.
Standard: 0.11 - 0.18 mm {0.004 - 0.007 in)
\
13-40

Transmission
;
ReassemblV
1. lnstallthe new oil seal.
2. Set the change Piece.
3. lnstall the shift rod.
4 Installthe steel ball, the spring, and the set screw.
5. lnstall the change piece attaching bolt.
6. Install the shift rod boots.
8x1.0mm30 N.m 13.1 kg{ m.
SET SCREW12 x'1.0 mm22 N.m {2.2 kg{.m, 16lbl.ft}
SPRINGL. 25.6 mm22 tbl.ltl
Installthe oil chamber Piate.
SHIFT ROD
6x1.0mm12 N.m (1.2 kgt'm,9lbtft)
9.
10.
8. Install the differential assembly.
DIFFERENTIALASSEMBLY
Set the spring washer and the washer.
Install the mainshaft, the countershaft, and the shift
fork assemblies.
NOTE: Align the finger ot the interlock with the
groove in the shift fork shaft.
MAINSHAFT
COUNTERSHAFT
SHIFT FORKS
(cont'd)
13-41

Automatic Transmission
'l4-2
14-3't 4-6
14-8
14-14
14-23
Hvdraulic Flow ...--...... 14-24
Lock-up System ........ 14-38
Eloctrical Systom
Component Location ............,...,................ I 4-45
Circuit Diagram ............. 14-46'Troubleshooting Procedures ........,..........., l4-48
Symptom-to-Component Chart
Electrical System ...... 14-50
Electrical Troubleshooting
Troubleshooting Flowchart .................... 14-52
Lock-uo Control Solenoid Valve A/8
Test .................. --.... \4-82
ReDlacement ,...,...,..,. 14-82
Shift Control Solenoid Vslve A/B
Test .................. ...... 14-83
Reolacement .............. 14-83
Transmission Control Module (TCM)*ReDlacement ........... 14-84
Mainshalt/CountershaJt SDeed Sensors
Reolacement ............. 14-85
Hydraulic Systom
Symptom-to-Component Chart
Hydraulic System
Road Test
Slall Speed
Test ..................
Fluid Level
Checking/Changing
Pressu.e Testing
Transmission
Transmission
Removal ............. ...... 14-99
lllustrated Index
Right Side Cover .................................. 1 4- 1 04
Transmission Housin9 ..................,,....... I 4-1 06
Torque Converter HousingNalve
Body .................. ... 14- 1O8
Right Side Cover
Removal ............. ...... 14-110
Transmission Housing
Removal ............. .-..-. 14-112
Torque Convener HousingNalve Body
Removal ............. ...... 14-114
Valve Caps
Description ................ 14-116
Valve Body
Repair ................ ...-.. 14-117
Valve
Assembly ...........
Oil Pump
Main Valve Body
Disassembly/lnspection/Reassembly
Regulator Valve Body
Disassembly/lnspection/Reassembly
Lock-up Valve Body
Disassembly/lnspection/Reassembly .......
Secondary Valve Body
Disassembly/lnspection/Reassembly .......
Servo Body
Disassembly/lnspection/Reassembly .......
1st-hold Accumulator/Right Side Covet
Oisassembly/lnspection/Reassembly .,..,..
Mainshaft
Disassembly/lnspection/Reassembly -.. -... 1 4- 1 29
lnsDection ................. 14- 130
Countershaft
Disassembly/lnspection/Reassembly ....... 14-132
Disassembly/Reassembly ....................... 1 4-1 33
lnsDection ................. 14-134
One-way Clutch/Parking Gear
Disassembly/lnspection .................... -.. -. 1 4-137
Sub-shaft
Disassembly/lnspection/Reassembly ....... 14-138
Disassemblv/Reassemblv ....................... 1 4-1 39
Sub-shaft Bearings
Replacement ............. l4-140
Clutch
fllustrated lndex ................. -..-...-.......... 14-1 41
Disassembly ,,,.,,........ 14-144
Reassembly .............. 14-146
Torque Converter Housing Bearings
Mainshaft Bearing/Oil Seal
Reolacement ......... 14-1 50
Countershaft Bearing Replacement .......,, 14-1 5l
Transmission Housing Bearings
Mainshsft/Countershaft Bearing
Repfacement ...-..-..14-152
Sub-shaft Bearing Replacement .............. 1 4-1 53
Reve.se ldler Gear
lnstallation ................ 14-154
Parking Brake Stopper
lnspection/Adjustment ..........................'14-'154
Transmission
Reassemblv .............,. .14_156
Toroue Converter/Drive Plate ..,..,............... 1 4- 1 63
Transmission
14-120
14-122
14-123
14-124
14-126
14-124
14-86
14-90
't4-92
14-93
14-94
lnstallation
Cooler Flushing'Shitt Cable
Removal/lnstallation ..............................
Adiustment ...-..-......-. 14-'171*Gearshift Selector
Disassembly/Reassembly .....................,. 1 4-17 2*Shift Indicator Panel
Adjustment -..........-...14-173
Throttle Control Cable
fnspection .......,..,...... 14-17 4
Adjustment .............. 14-176
14-164
14-168
14-'t 7 0
Inspection

The Automatic Transmission is a combination of a 3-e,ement torque convefter and triple-shaft electfonically controlled
automatic transmission which provides 4 speeds forward and 1 speed reverse. The entire unit is positioned in line with
the engine.
Torque Converter, Gears and Clutches
The torque converter consists of a pump, turbine and stator assembly in a single unit, The torque converter is connected
to the engine crankshaft so they turn together as a unit as the engine turns. Around the outside of the torque converter
is a ring gear which meshes with the starter pinion when the engine is being staned. The entire torque converter assem-
bly serves as a flywheel while transmitting power to the transmission mainshaft.
The transmission has three parallel shafts, the mainshaft. countershaft and sub-shaft. The mainshatt is in line with the
engine crankshaft.
The mainshaft includes the clutches for 1 st, and 2ndl4th, and gears for 3rd. 2nd, 4th, reverse and l st (3rd gear is in-
tegral with the mainshaft, while reverse gear is integral with the 4th gear).
The countershaft includes the 3rd clutch and gears Ior 3rd, 2nd,4th, reverse, lst and parking. Reverse and 4th gears
can be locked to the countershaft at its center, providing 4th gear or reverse, depending on which way the selector is moved.
The sub-shaft includes the lst-hold clutch and gears for 1st and 4th
The gears on the mainshait are in constant mesh with those on the countershaft and sub-shaft. When certain combina-
tions of gears in the transmission are engaged by the clutches, power is transmitted from the mainshaft to the counter-
shaft via the sub-shatt to provide @, E, tr. tr and @ position.
Electronic Control
The electronic control system consists of the Transmission Control Module {TCM), sensors, and 4 solenoid valves. Shift-
ing and lock-up are electronically controlled for comfortable driving under all conditions.
The TCM is located below the dashboard, behind the left side kick panel on the driver's side.
Hydraulic Control
The valve bodies include the main valve body, secondary valve body, regulator valve body. servo body, and lock-up valve
body throuqh the respective separator plates.
They are bolted on the torque converter housing.
The main valve body contains the manual valve, 1-2 shift valve, 2-3 shift valve, Clutch Pressure Cont.ol (CPC) valve,
4th exhaust valve, relief valve, and oil pump gears.
The secondary valve body contains the 4-3 kick-down valve,3-2 kick-down valve,2-3 orifice cont.ol valve, 3-4 shitt
valve, orifice control valve. modulator valve, and servo control valve
The regulator valve body contains the pressure regulator valve. lock-up control valve, torque converter check valve, and
cooler check valve.
The servo bodv contains the servo valve which is integrated with the reverse shift fork, throttle valve B, and accumulators.
The lock-ug valve bodv contains the lock-up shift valve and lock-up timing B valve. and is bolted on the secondary valve
body.
Fluid from the regulator passes through the manual valve to the various control valves.
Shitt Control Mochanism
Input to the TCM i.om various sensors located throughout the car determines which shift control solenoid valve should
be activated.
Activating a shift control solenoid valve changes modulator pressure, causing a shift valve to move. This pressurizes
a line to one of the clutches. engaging that clutch and its corresponding gear.
Lock-up Mechanism
In @ position. in 2nd, 3rd and 4th, and E position in 3rd, pressurized tluid can be drained from the back of the tor-
que converter through an oil passage, causing the lock-up piston to be held against the torque converter cover. As this
takes Dlace, the mainshaft rotates at the same speed as the engine crankshatt. Together with hydraulic control, the TCM
optimizes the timing ol the lock-up mechanism.
The lock-up valves control the range of lock-up according to lock-up control solenoid valves A and B, and throttle valve B
When lock-up control solenoid valves A and B activate, modulator pressure changes. Lock-up control solenoid valves
A and B are mounted on the torque converter housing, and are controlled by the TCM.
(cont'd)
14-3

VALVEBODIES
TOROUE CONVERTERASSEMBLY
VEHICLE SPEED SENSOR IVSSI1ST-HOLD CLUTCH
SUB SHAFT3RD CLUTCH
SPEED SENSOR
MAINSHAFT
SPEED SENSOR1ST CLUTCH
COUNTERSHAFT
14-5

Description
Clutches
The four speed automatic transmission uses hydraulically actuated clutches to engage or disengage the transmission gears.
When clutch pressure is introduced into the clutch drum, the clutch piston is applied. This presses the iriction discs and
steel plates together, locking them so they don't slip. Power is then transmitted through the engaged clutch pack tojts hub-mounted gear.
Likewise, when clutch pressure is bled from the clutch pack. the piston releases the friction discs and steel plates, and
they are {ree to slide past each other while disengaged. This allows the gear to spin independently on its shaft, transmit-
ting no power.
1st ClutchThe l st clutch engages/disengages 1st gear, and is located at the end of the mainshaft, just behind the right side cover.
The 1st clutch is supplied clutch pressure by its oil feed pipe within the mainshaft.
1st-hold clutchThe 1st-hold clutch engages/disengages 1st-hold or I Fosition, and is located at the center ol the sub-shaft. The 1st-
hold clutch is supplied clulch pressure by its oil feed pipe within the sub-shait.
2nd ClutchThe 2nd clutch engages/disengages 2nd gear, and is located at the center of the mainshaft. The 2nd clutch is joined
back-to-back to the 4th clutch. The 2nd clutch is supplied clutch pressure through the mainshaft by a circuit connected
to the regulator valve body.
3rd Clutch
The 3rd clutch engages/disengages 3rd gea.. and is located at the end oJ the countershaft, opposite the right side cover.
The 3rd clutch is supplied clutch pressure by its oil feed pipe within the countershaft,
4th clurch
The 4th clutch engages/disengages 4th gear. as well as reverse gear, and is located at the center of the mainshaft.
The 4th clutch is joined back-to-back to the 2nd clutch. The 4th clutch is supplied clutch pressure by its oil feed pipe
within the mainshalt.
One-way Clutch
The one-way clutch is posjtioned between the parking gear and 1st gear. with the parking gear splined to the counter-
shaft. The 1st gear provides the outer race, and the parking gear provides the inner race surface. The one-way clutch
locks up when power is transmitted from the mainshaft 1st gear to the countershaft lst ggel _The 1st clutch and gears remain engaged in the 1st. 2nd. 3rd, and 4th gear ranges in the @, E or E position.
However, the one-way clutch disengages when the 2nd. 3rd, or 4th clutches/gears are applied in the E, lD.l o, Eoosttton.
This is because the increased rotational speed of the gears on the countershaft over-ride the locking "speed range" of
the one-way clutch. Thereafter, the one-way clutch free-wheels with the lst clutch still engaged.
COUNTERSHAFT 1ST GEAR
FREE
:>
LOCKS
aF
NOTE:View trom right side cover side.
14-6

MAINSHAFT4TH GEAR
MAINSHAFT 3RD GEARSUB.SHAFT 4TH GEAR
lST,HOLD CLUTCHMAINSHAFT2ND GEARTOROUECONVERTER
SUB-SHAFT 1ST GEAR
SUB.SHAFT2ND CLUTCHSTARTERNING GEAR
LOCK-UPCLUTCH
4TH CLUTCHMAINSHAFT 1STGEAR
DRIVE PLATE
1ST CLUTCH
MAINSHAFT
ONE-WAY CLUTCH
PARKING GEAR
,I ST GEAR
COUNTERSHAFT REVERSE GEAR
REVERSE SELECTOR
REVERSE SELECTOR HU8
COUNTERSHAFT 4TH GEAR
COUNTERSHAFT 2ND GEAR
COUNTERSHAFT 3RD GEAR
DIFFERENTIAL
FINAL DRIVEN GEAR
3RD CLUTCH
14-7