1997 HONDA CR-V Idle valve

Description
Power Flow (cont'dl
E position
1. Hydraulic pressure is switched by the manual valve to the servo valve, which movss the reverse shift fork to the
reverse position, The reverse shift fork engages with the reverse selector, the reverse selector hub, and the counter-
shaft reverse gear.
2. Hydraulic pressure is also applied to the 4th clutch. Power is transmitted from the mainshaft reverse gear via the
reverse idler gear to the countershaft reverse gear.
3. Rotational direction ofthe countershaft reverse gear ischanged viathe reverse idlergear.
4. Power is transmitted to the final drivegear,which drivesthefinal d riven gear a nd the transfer shaft drive gesr (4WD).
5. The transfer shaft drive gear drives the transfer shaft and the transfer driven gear shaft (4WD).
NOTE: The illustration shows the 4WD automatic.transmission; power flow of the 2wD automatic transmission is identical
to the 4WD except for parts related to the transfer assembly.
TOROUE CONVERTERMAINSHAFT REVERSE
COUNTERSHAFT
FINAL ORIVE
REVERSE IDLERGEAR
COUNTERSHAFTREVERSE GEAR
REVERSE SEITCTORHUBREVERSE SELECTOR
REVEBSC SHIFTFORK
FINAL OBIVEN GEAR
TRANSFER SHAFT DRIVE GEAR{4WD)
TRANSFER SHAFT {4WD)SERVO VAI-VE
14-14
TRANSFER DRIVEN GEAR SHAFT I4WD}
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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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r] REVERSE IDLER GEAR SHAFT/HOLDER'A N€EDLE BEARING
..] TRANSMISSION HOUSING
al TRANSMISSION HOUSING OIL SEAL Replace.g SET BING.80 mm Selecrive part
O REVERSE GEAR COLLABE couNTERSHAFT REVERSE GEAB
.9,] NEEDLE BEARINGi9 LOCK WASHER Replace..1!i REVERSE SHIFT FORKO REVERSE SELECToRiJ. REVERSE SELECTOR HUBii' COUNTERSHAFT 4TH GEAR.14 NEEDLE BEARINGiD D|STANCE coLLAR,28 mm Selective part(i3 COUNTERSHAFT 2NO GEABi7-] THRUST NEEDLE BEARING(10 COUNTERSHAFT 3RD GEAR(9 NEEDLE BEARINGE9 COUNTERSHAFI3RD GEAB COLLAR.li THRUST NEEDLE BEARING.?) SPLINEO WASHER,,O 3RD CLUTCH ASSEMBLY
€1 O-RING Beplace.i23 COUNTERSHAFT
4i SHIFT CONTROL SOLENOID COVER
?Z] HARNESS CLAMP BRACKET
?9] SHIFT CONTROL SOLENOID VALVE A/B ASSEMBLY
8 HARNESS CLAMP BRACKET
GI SHIFT CONTROL SOLENOID VALVE FILTER/GASKET
(4 MAINSHAFT 2ND GEARi49 NEEDLE BEARING
@ THRUST NEEDLE BEARING(49 MAINSHAFT
@r SEAL|NG R|NG,35 mm
O SEALING RING,29 mm
@ NEEDLE BEARING
.49 SET RING
€) lST.HOLD CLUTCH ASSEMBLY
O o-RING Replace.6E THRUST WASHER
€9 THRUST NEEDLE BEARING
6' NEEDLE EEARING
€ir SUB-SHAFT 4TH GEAR
6 THRUST NEEDLE BEARING
@ SUB.SHAFT 4TH GEAR COLLAR@ sUB-sHAFf
6I NEEDI-E B€ARING STOP
@ NEEDLE BEARING(6t ATF GUIDE CAP Replace.(64 TRANSMISSION HANGEB
@ BREATHER CAP
i@ MAINSHAFT SPEED SENSOR
6i O-RING Replace.
6D REVERSE IDLER GEAR
@r DOWEL PlN, 14 x 25 mm.6d SNAP RINGS
QlI SUB.SHAFT TRANSMISSION HOUSING BEARING
E) MAINSHAFT TRANSMISSION HOUSING BEABING.2, COUNTERSHAFI TRANSMISSION HOUSINGBEARING
@[E
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04
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ai
Replace-SNAP RINGTHRUST WASHEBTHRUST NEEDLE BEARINGMAINSHAFT 4TH GEARNEEDLE BEARINGSTHRUST NEEDLE BEARINGMAINSHAFT 4TH GEAB COLLAR2NO/4TH CLUTCH ASSEMBLYO-RING Replace.THRUST WASHER,36.5 x 55 mm Selective partTHRUST NEEOLE BEARING
DOWEL PlN, 14 x 25 mmCONNECTOR BRACKETATF MAGNETDOWEL PlN, 14 x 20 mmTRANSMISSION HOUSING GASKET Replace.DIFFERENTIAL ASSEMBLYDOWEL PlN, 10 x 12 mmO-RING Replace.TRANSFER ASSEMBLYTOROUE CONVERTER HOUSING OIL SEAL Replace.TOROUE CONVERTER HOUSING
TOROUE SPECIFICATIONS
Bolt/Nut No.Torque ValueSizeRgmarks
6A
6B
10A
12 N.m (1.2 kgf.m,8.7 lbf.ft)
14 N.m (1.4 kgf.m, 10 lbift)
44 N.m (4.5 kgf.m,33 lbf.ft)
6x 1.0 mm
6x 1.0 mm
10 x 1.25 mm
14-177
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ao6l
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REVERSE IDLER GEAR SHAFT,/HOLDERNEEOLE BEARINGTRANSMISSION HOUSINGTRANSMISSION HOUSING OIL SEAL R€place.SET RING,80 mm Selective part
REVERSE GEAR COLLARCOUNTERSHAFT REVERSE GEARNEEDLE BEARINGLOCK WASHER Replace.REVERSE SHIFT FORKREVERSE SELECTORREVERSE SELECTOR HUBCOUNTERSHAFT 4TH GEARNEEDLE BEARINGDISTANCE COLLAR,28 mm Selective pan
COUNTERSIIAFT 2ND GEARTHRUST NEEDLE BEARINGCOUNTERSHAFT 3RD GEARNEEDLE AEARINGCOUNTERSHAFT 3RD GEAR COLLARTHRUST NEEOLE BEARINGSPLINEO WASHER3RD CLUTCH ASSEMBLYO-RINGS Replace.COUNTERSHAFTSHIFT CONTROL SOLENOID COVERHARNESS CLAMP BRACKETSHIFT CONTROL SOLENOID VALVE A/B ASSEMBLYHARNESS CLAMP BRACKETSHIFT CONTROL SOLENOID VALVE FILTER/GASKETReplace.SNAP RINGTHRUST WASHERTHRUST NEEDLE BEARINGMAINSHAF ,ITH GEARNEEDLE BEARINGSTHRUST NEEDLE BEARINGMAINSHAFT 4TH GEAR COLLAR2ND/4TH CLUTCH ASSEMBLYO-RINGS ReDlace.THRUST WASHER,36.5 x 55 mm Selective part
THRUST NEEDLE BEARING
MAINSHAFT 2ND GEARNEEDLE BEARINGTHRUST NEEOLE BEARINGMAINSHAFTSEALING RINGS,35 mmSEALING RING. 29 mmNEEDLE BEARINGSET RINGlST-HOLD CLUTCH ASSEMSLYO-RINGS Replace.THRUST WASHERTHRUST NEEDLE BEARINGNEEDLE BEARINGSUB.SHAFT 4TH GEARTHRUST NEEDLE BEARINGSU&SHAFT,ITH GEAR COLLARSUB.SHAFTNEEDLE BEARING STOPNEEDLE BEARINGATF GUIDE CAP Replace.TRANSMISSION HANGERBREATHER CAPMAINSHAFT SPEED SENSORO-RING Reolace.REVERSE IDI.fR GEARDOWEL PlN, lil x 25 mmSNAP RINGSSU&SHAFT TRANSMISSION HOUSING AEARINGMAINSHAFT TRANSMISSION HOUSING BEARINGCOUNTERSHAFT TNANSMISSION HOUSINGBEABINGDOWEL PlN, 14 x 25 mrnCONNECTOR BRACKETDOWEL PlN, 14 x 20 mmTRANSMISSION HOUSING GASKET Replace.DIFFERENTIAL ASSEMBLYTOROUE OONVERTER HOUSING OIL SEAL Replace.TOROUE CONVERTER HOUSING
@@@@@@@@@@@@@@@@@@@@@@@)@@@@@@@
@@@@@@@
TOROUE SPECIFICATIONS
Boli/Nut No.Torque ValueSizeRemarks
6B
10A
12 N.m (1.2 kgf.m,8.7 lbf.ft)'14 N.m (1.4 kgim, 10 lbf'ft)
44 N.m (4.5 kgim, 33 lbf.ft)
6x 1.0 mm
6x1.0mm
10 x '1.25 mm
14-1A3
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Troubleshooting
General Troubleshootin g
Check the following before you begin:
. Has the suspension been modified in a way that would affect steering?
. Are tire sizes, tire variety and air pressure correct?
. ls the steering wheel original equipment or equivalent?
. ls the power steering pump belt properly adjusted?
. ls steering fluid reservoir filled to proper level?
. ls the engine idle speed correct and steady?
Hard Steering (Check the power assist, see page 17-12. lf the force is over 29 N (3.0 kgl 6.6 lbfl, proceed with this troubleshooting.i
Abnormalthiidpressure (Iluidpressure is toohigh)
Relief pressuretoo low
Faulty valve body unit
Abnormal
Check the teed and return circuit lines and hosebetween the gearbox and pump for clogging anddeformation.
Normal line and hose
Check the pump fluid pressure(see page 17-16 or 17-17).Measure steady state lluid pres-
sure at idle with the pressure con-trol valve and the shut-off valve (it
so equipped) fully open.The fluid pressure should be 1,500kPa (15 kgf/cm,,213 psi)or less.
Normal
Check the flow control valve (see page 17 26).. Check the valv€ lor smooth movement in the hous-ing.. Check the relief valve for leaks.
Check the pump fluid pressure(see page 17-16 or l7-17).Measure pump relief pressure atidle with the pressure controlvalve and the shut'off valve lil soequipped) fully closed.The fluid pressure should be 6,9007,800 kPa (70 - 80 kgflcm,, 1,000- 1,140 psi).
Normal relief pressure
17-4
Go to page 17 5Faulty pump assemblyFaulty flow control valve
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Uneven or rough steering.Ad,ust the rack gu ide (see page 17- 15).
ll the problem is not corrected byadjusting the rack guide, replacethe gearbox.
Adjust the belttension. Replace thebelt, if necessary (see page 17-14).Belt slipping on pulley.
lf the engine stalls when thewheel is turned while the vehicleis stopped or moving at lowspeed, adjust the idle speed (seesection 111.
ldle speed low or erratic.
Check power steering lluid level. lfthe level is excessively low checkfor leaks in the system. Add fluidto the specified level.
Air in reservoir, or check powersteering tluid level.
lf fluid level is OK, check O-ringsand seals on both ends of thepump inlet hose, and the P/Spump housing mating surlacesand drive shaft oil seal for suction leaks. Check the reservoir forcracks, Replace parts as neces-
Pump belt slipping on pulley(pump stops momentarily).Adjust the belt tension (see page17-14) or replace belt.
Check if pump pressure is normaland the gauge needle travel is 500kPa (5 kgl/cm,, 71 psi) or less.Check the flow control valve if theneedle travel exceeds 500 kPa (5kgflcm', 71 psi). lI the flow controlvalve is normal, replace the pumpas an assembly,
Install the power steering pres-sure gauge, Close the pressurecontrol valve and shut off valve (if
so equipped) fully and measurethe pump pressure (see page 17-16ot 17 17).
Steering wheel kicks backduring wide turns.
7-7
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lnspection and Adjustment
Pump Pressure Gheck With T/N 07406 - 0010001
Check the fluid pressure as follows to determine whetherthe trouble is in the pump orgearbox.
1. Check the powsr steering fluid level (see page 17-15), and pump belt tension (see page 17-14).
2. Disconnect the pump outlet hose from the pump
outlet with care so as not to spill the pow€r steeringiluid on the frame and other pans. thon install theP/S joint adapter (pumpl on the pump outlet.
6 x 1.0 mm BOLT{Part oftool)
FEED HOSE FITTING
PUMP OUTLET HOSE
11 N.m ll.1 kgl.m, E lbf.ftl
P/S PRESSURE GAUGE07('6 - 0010001
6 x t.0 mm BOLT{Part oftool)11 N.m(1.1 kgt m, 8 lbf.tr)
Connect the P/S joint adapter (hose) to the p/S pres-
sure gauge, then connect the pump outlet hose tothe P/S ioint adspter (hose).
Install the P/S pressure gauge to the p/S joint
adapter (pump),
17-16
5. Fully open the shut-off valve.
PRESSURECONTROL VALVE
6. Fully open the pressure controlvatve.
7. Start the engine and let it idle.
8. Turn the steering wheel from lock-to-lock severaltimes to warm the fluid to operating temperature.
9, Measure steady-state fluid pressure while the engineis idling. lf the pump is in good condition, the gauge
should read less than 1,500 kPa (15 kgf/cmr, 213 psi).
lf it reads high, check the outlet hose or valve bodvunit (see General Troubleshooting).
10. Close the pressure control valve, then close theshut-off valve gradually until the pressure gauge
nsedle is stable. Read the pressure.
CAUTION: Do not k€ap tha prca3un control valvoclorod mo.c thon 5 srconds or thc pump cluld bodamEgod by ovor-hoating.
11. lmmodiately open the pressure controlvalve fullv.
lf the pump is in good condition, the gauge shouldread at least 6,900 - 7,800 kpa (70 - 80 kgflcmr,'1,000 - 1.140 psi). A low reading means pump out-put is too low for full assist. Repair or replace theDUMD.
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Pump Pressure Check With T/N 07406 -
Check the fluid pressure as follows to determine whether
the trouble is in the pump or gearbox.
1. Check the power steering tluid level (see page 17-
151, and pump belt tension (see page 17-14).
2. Disconnect the pump outlet hose from the pump
outlet with care so as not to spill the power steering
fluid on the frame and other parts, then install the
P/S joint adapter (pump) on the pump outlet.
6 x 1.0 mm BOLT(Part oftool)
FEED HOSE HfNNG
PUMP OUTLET HOSE
1'l N.m 11.1 kgf.m,8lbf ft)
P/S PRESSURE GAUGE07406 - 001000A
6 x 1.0 mm BOLT(Part ol tool)11 N.m(1.r kg{.m,8lbf'ft|
Connect the P/S joint adapter (hose) to the P/S pres-
sure gauge, then connect the outlet hose to the P/S
joint adapter (hose).
Install the P/S pressure gauge to the P/S joint
adapter (pumpl.
001000A
5. Open the pressure controlvalve fully.
PRESSURECONTROL VALVE
7.
10.
Start the engine and let it idle.
Turn the steering wheel from lock-to-lock several
times to warm the tluid to operating temperature.
Measure steady-state fluid pressure while the engine
is idling. It the pump is in good condition, the gauge
should read 1,500 kPa (15 koflcm',213 psi). lf it reads
high. check the outlet hose or valve body unit {see
General Troubleshooting),
Close the-pressure control valve gradually and read
the oressure.
CAUTION: Do not keep the pressurs control valve
closed more then 5 seconds or the pump could bo
damaged by overheating.
lmmediately open the pressure controlvalve fully.
lf the pump is in good condition, the gauge should
read at least 6,900 - 7;800 kPa (70 - 80 kgflcm',
1,000 - 1.140 psi), A low reading means pump out-
Dut is too low for {ull assist. Repair or replace the
oumo.
17-17
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