engine cover HONDA CR-V 1997 RD1-RD3 / 1.G Owner's Manual

Regulator Valve
The regulator valve maintains constant hydraulic pressure from the ATF pump to the hydraullc control system, while also
furnishing fluid to the lubricating system and torque converter. Fluid from the ATF pump flows through B and B'. Fluid
entering from B flows through the valve orifice to the A cavity. This pressure of the A cavity pushes the regulator valve to
the right side. and this movement of the regulator valve uncovers the fluid port to the torque converter and the relief
valve. The fluid flows out to the torque converter and the relief valve, and the regulator valve moves to the left side.
According to the level of the hydraulic pressure through B, the position of the regulator valve changes and the amount of
fluid from B,through the torque converter also changes. This operation is continued, maintaining the line pressure.
NOTE; When used, "|eft" or "right" indicates direction on the illustration below.
ENGINE NOT RUNNING
STATOR SHAFT ABM
Stator Reaction Hydraulic Pressurs Control
Increases in hydraulic pressure according to torque are performed by the regulator valve using stator torque reaction. The
stator shaft is splined to the stator in the torque converter, and its arm end contacts the regulator spring cap When the
vehicle is accelerating or climbing (Torque Converter Range), stator torque reaction acts on the stator shaft, and the stator
arm pushes the regulator spring cap in the direction of the arrow in proportion to the reaction. The stator reaction spring
compresses, and the regulator valve moves to increase the line pressure. Line pressure reaches its maximum when the
stator torque reaction reaches its maximum.
TOROUE CONVERTER
REGULATON VALVE
STATOR REACTION
TOR SPRING CAP
(cont'd)
ENGINE RUNNING
To TOROUE CONVERTER Lubtication
STATONSTASHAFTATOF SHAFT ARM
14-27
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Lock-up System
TOROUE CONVERTER
In E position ('97 - 98 models) and in E position ('99 -
OO models) (3rd and 4th), and E position ('97 - 98 mod-
els) and in E position with Over-Drive (O/D) is OFF (by
pressing the O/D switch) ('99 - 00 models) (3rd), pressur-
ized fluid is drained from the back of the torque convert-
er through a fluid 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 th8
engine crankshaft. Together with the hydraulic control,
the PCM optimizes the timing of the lock-up system.
Under certain condltions. the lock-up clutch is appli€d
during deceleration, in 3rd and 4th gear.
The lock-up system controls the range of lock-up sccord-
ing to lock-up control solenoid valves A and B, and ths
linear solenoid. 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 out-
side of the torque converter housing, and the linear
solenoid is mounted on the transmission housing. They
are controlled bv the PCM.
The table below shows the lock-up conditions for lock-up
control solenoid valves and linear solenoid pressure.
LINEAR SOLENOID PRESSURE
(cont'd)
LOCK.UP CONTROL' VALVE
LOCK.UP CONTROLSOLENOID VALVE
AB
MODULATORPf,ESSURE
MAINSHAFT
COUNTERSHAFT
SUB.SHAFT
Lock-up
Conditions
Lock-up Conirol
Solenoid valveLinaal
Solenoid
PrgssulsAB
Lock-up OFFOFFOFFHigh
Lock-up, HalfONDuty operation
OFF - ONLow
Lock-up, FullONONHigh
Lock-up
during
deceleration
ONDuty operation
OFF - ON
RELIEF VALVE
LOCK'UP TIMINGVALVE
COOLER RELIEF VALVE
ATF COOLERATF STRAINER
ATF PUMP
14-39
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Description
Lock-up System (cont'dl
Lock-up Clutch
L Ooeration (clutch on)
With the lock-up clutch on, the fluid in the chamber between the torque convener cover and the lock-uD oiston is drainedoff, and the converter fluid exerts pressure through the piston against the torque converter cover, As a result, the conven-er turbine is locked to the converter cover. This bipasses the converter, placing the vehicle in direct drive.
LOCK,UP PISTON
The power flows by way of:
Engine
+
Drive plate
Torque converter cover
I
Lock-up piston
t
Damper spring
{
Turbine
Mainshaft
IOROUECOVER
Operation (clutch off)
With the lock-up clutch off, the fluid flows in the reverse of "clutch on." As a result, the lock-up piston moves away fromthe converter cover, and the torque converter lock-up is released.
Engine
I
Drive plate
{
Torque converter cover
{
Pump
I
Turbine
{
Mainshaft
TOROUECOVER
To ATF cooler{(1\\n1INLET
t
Jtl
ort
MAIf{SHAFT
MAII{SHAFT
14-40
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8. Set the control shaft to E] position. then install the
A,/T gear position switch on it.
CONTROL SHAFT
Install the Ay'T gear position switch cover and har-
ness clamp on the end cover.
Connect the A,/T gear position switch connector.
then install it on the connector bracket.
Turn the ignition switch ON (ll). Move the shift lever
through all gears, and check the AfI gesr position
switch synchronization with the A/T gear position
indicator.
9.
10.
11.
A/TGEARPOSMON A/T GEAR POSITIONINDICATOR INDICATOR'99 - 00 MODELS '97 - 98 MOOELS
12, Start the engine. Move the shift lever through all
gears. and verify the following:
. The shift lever cannot be moved to E] position
from E position unless the shift lever is pulled.
. The engine will not start in any position other
than E or E.. The back-up lights come on when the shift lever
is in El position.
14-141
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Symptom-to-Com ponent Chart
Hydraulic System (cont'd)
NOTES
See flushing procedure, page l4-264 and 265,
BSet idle rpm in gear to specified idle speed. lf still no good, adjust motor mounts as outlined in enginesection of this manual.
clf the large clutch piston O-ring is broken, inspect the piston groove for rough machining.
Dlf the clutch pack is seized or is excessively worn. inspect the other clutches fot 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.
lf the 1-2 shift valve is stuck closed. the transmission will not upshift. lf stuck open, the transmission hasno lst gear.
Hlf the 2nd orifice control valve is stuck, inspect the 2nd and 3rd clutch Dacks for wear.
lf the 3-4 orifice control valve is stuck, inspect the 3rd and 4th clutch packs for wear.
Jlf the clutch pressure control valve is stuck closed. the transmission will not shift out of lst gear.
Klmproper alignment of 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.
Llf 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.
Mlf the lst 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.
N' Replace the mainshaft if the bushing for the 4th feed pipe is loose or damaged, lf the 4th feed pipe is darrFaged or out of round. replace the end cover.' Replace the mainshaft if the bushing for the l st feed pipe is loose or damaged. lf the 1st feed pipe is dam-aged or out of round, replace it.
oA worn or damaged sprag clutch is mostly a result of shifting the transmission in E!. E, or E positionwhile the wheels rotate in reverse. such as rocking the vehicle in snow.
PInspect the frame for collision damage.
lnspect for damage and wear:
l. 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 under pinion 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, or whirring 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, replace ATF strainer, and thoroughly cjeantransmission, flush torque converter. cooler, and lines,lf bottom of 3rd clutch is swirled and transmission makes gear noise. replace the countershaft and final drivenoear,
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 Drooer tools.
SInstall 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.
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Pressure Testing
Changing
NOTE: Keep all foreign particles out of the transmis-
sion.
1. Bring the transmission up to operating temperature
(the radiator fan comes on) by driving the vehicle.
Park the vehicle on level ground. turn the engane
off. then remove the drain Plug.
NOTE: lf a cooler flusher is to be used, see page
14-264 and 14-265.
TRANSMISSIONEND COVER
DRAIN18 x 1.5 mmSEALING WASHEBReplace.49 N.m {5.0 kgt.m, 36 lbf.tl)
Reinstall the drain plug with a new sealing washer,
then refill the transmission with the recommended
fluid to the uDper mark on the dipstick. Always use
Genuine Honda Premium Formula Automatic
Transmission Fluid (ATF) Using a non-Honda ATF
can affect shift quality.
Automatic Transmission Fluid Capacity:
4WD;
2.9 { (3.1 US qt. 2.6 lmp qt) 8t change
5.8 ? {7.2 US $, 6.0 lmp qt} at ovethaul
2WD:
2.7 | l2.S US qt,2.1lmp qtl ai change
5.9 ? {6.2 US $, 5.2 lmp qtl at ovolhaul
2.
a
a
1.
Wlrile testing, be careful of the rotaling wheols.
Mako sure lifts, iacks, and safety stands ar€ placed
properly (see scction 11.
Before testing, be sure the transmission fluid is
filled to the proPer level.
4WD:
Raise the vehicle (see section 11.
2WD:
Raise the front of the vehicle, and make sure it is
securely supported. Set the parking brake, and block
both rear wheels securely.
Allow all four wheels {4WD) or front wheels (2wD}
to rotate freely.
Warm up the engine (the radiator fan comes on),
then stop it and connect the tachometer.
Connect the oil pressure gauges to each inspection
hole securely, and do not allow dust or other foreign
particles to enter the inspection holes.
TOROUE: 18 N'm ll.8 kgf'm, 13 lbf'ft)
5.
A/T PRESSURE HOS€,2210 mm07MAJ - PYiOllA
{4 Requircd}
,4'/"' ,a
W'
A/T PRESSURE HOSEADAPTER07MAJ - PYt0120(il Rcquiledl
6. Measure the following Pressure:. Line Pressure ..........,14-162
. 1st. 1st-hold Clutch Pressure .............'. 14-162
. 2nd,3rd and 4th Clutch Pressure .......... 14-163
7. Install new sealing washers and the sealing bolts in
the inspection holes, and tighten to the specified
toroue.
(cont'd)
A/T OIL PRESSUREGAUGE SET W/PANEL07{06 - 0020400
/4\\-J-- (
+..\.-.\-'-\
A/T LOW PBESSUREGAUGE w/PANEL07406 - 0070300
TOROUE: 18 N'm 11.8 kgf'm, 13 lbf'ft)
14-161
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Transmission
Removal
@
2.
'1.
Make sure lifts. iacks, and safety stands aro placed
properly, and hoist brackets are attached to the col-
rest position on the engine lsee section 11.
Apply th€ parking brake and block the r€ar wheels,
so vehicls will noi roll off the stands and fall on you
while working under it.
NOTE: Use fender covers to avoid damaging painted
surfaces.
Disconnect the negative terminal, then disconnect
the positive terminal from the battery.
Remove the intake air duct and the air cleaner hous-
ing assembly,
Remove the starter cables. Remove the harness
clamp from the clamp bracket.
5.
STARTERCABLES
Remove the transmission ground cable terminal
and the radiator hose clamp lrom the transmission
hanger.
Disconnect the lock-up control solenoid valve con-
nector, then remove the harness clamp from the
clamp bracket.HARNESS CLAMP
RADIATOR HOSECLAMP
CONTROLSOLENOID VALVECONNECTOR
CLAMP
6. Disconnect the vehicle speed sensor (VSS), the coun-
tershaft speed sensor, and the A/T gear position
switch connectors.
A/T GEAR POSITIONSWITCH CONNECTOR
VEHICLE SPEEDSENSOR |VSS'
CONNECTORBfiACKET
SPEED SENSORCONNECTOR
7. Remove the transmission housing mounting bolts.
MOUNTING BOLTS
(cont'd)
14-169
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13.Pry the right driveshaft out of the differential. and
orv the left driveshaft out of the intermediate shaft
{see section 16).
Pull out the inboard joint, and remove the right and
left driveshaft (see section 18).
Tie plastic bags over the driveshaft ends. Coat all
Drecision finished surfaces with clean engine oil.
Disconnect the primary heated oxygen sensor
(Primary HO2S) connector.
Remove exhaust pipe A.
GASKETReplace.
14.
16.
't7 .
ORIVESHAFT
Replace.
EXHAUST
14-171
18.
19.
Remove the shift cable cover.
Remove the shift cable.
ilWD:
Remove the snap pin and control pin, then separate
the shift cable from the control lever. Do not bend
the shift cable excessively.
2WD:
Remove the control lever, then separate the shift
cable from the control shaft. Do not bend the shift
cable excessivelv.
Replace.
SHIFT CAELE
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Transmission
21.
Removal (cont'dl
Make reference marks across the transfer assemblv
and propeller shaft flanges. (4WD)
Separate the propeller shaft from the transfer
assembly. (4WD)
I x 1.25 mmReplace.
Remove the intermediate shaft,
Tie plastic bags over the both ends of the intermedi-
ate shaft. Coat all precision finished surfaces with
clean engine oil.
22.
REFERENCE MARKS
14-172
24.Remove the right front mounvbracket.
Remove the ATF cooler hoses at the ATF cooler
lines. Turn the ends of the cooler hoses uo to ore-
vent ATF from flowing out, then plug the lines and
hoses. Check for any sign of leakage at the hose
ioints.
RIGHT FRONTMOUNT/BRACKET
Remove the rear stiffener and torque converter
cover.
Remove the eight drive plate bolts, one at a time.
while rotating the crankshaft pulley.
27.
COVER
DRIVE PLATE
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Shift Gable
Adjustment
SRS components are located in this area. Review the SRS
component locations, precautions, and procedures in the
SRS section (241 before performing repairs or service.
1. Release the steering tilt lever.
2. Remove the access cover from the lower column
cover.
LOCK PIN
AOJUSTINGnoo
ADJUSTER
7 N.m (0.7 kg{.m,5 tbf.ft)
3. Shift to E position. then remove the lock pin from
the cable adjuster.
K\ffi
/* 1 6-,>
snenrftc YTILT LEVER IACCESS COVER
14-272
'l 1.
4. Check that the hole in the cable adjuster is aligned
with the hole in the adjusting rod. There are two
holes in the cable adjuster. They are positioned 90"
apart to allow cable adjustments ln l/4 turn incre-
ments.
CABLE ADJUSTER
CablsToo Short
lf not perfectly aligned, loosen the locknut on the
shitt cable. and adjust as required.
Tighten the locknut.
Install the lock pin on the adjuster. lf you feel the
lock pin binding as you reinstall it, the cable is still
out of adjustment and must be readjusted.
Make sure the lock pin is seated securely in the
adjuster. Replace the lock pin if it does not snap
over the cable adjuster securely.
Move the shift lever to each gear, and verify that the
A/T gear position indicator follows the A"/T gear
position switch.
Start the engine, and check the shift lever in all
gears. lf any gear does not work properly, refer to
troubleshooting on page 14-'153 thru 14-156.
Insert the ignition key into the key cylinder on the
upper column cover, and verify that the shift lock
tever reteases.
CableToo LongExactAlignment
7.
a
10.
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