clutch HONDA CR-V 1998 RD1-RD3 / 1.G Workshop Manual

CAUTION: lf either end ot the special tool issetover an
area of the spring retainer which is unsupported by the
return spring, the retainer may be damaged. B€ sure the
special tool is adiusted to have lull contact with the
spring retainer.
SPRING RETAINER
4. Compress the return spring.
Do not s6t h6re.
5. Remove the snap ring, Then remove the special tools,
spring retainer and return spring.
Wrap a shop rag around the clutch drum, and apply
air pressure to the ATF passage to remove the pis-
ton.
Place a finger tip on the other end while applying
arr pressure.
OSHA.APPROVED
SPRIlIG RETAINER
14-217
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Glutch
Reassembly
NOTE:
. Clean all parts thoroughly in solvent or carburetorcleaner, and dry them with compressed air.. Blow out all passages.
o Lubricate all parts with ATF before reassembly.
1. Inspect the check valve; if it's loose, replace the pis_ton.
CHECK VALVE
2. Install new O-rings on the clutch piston.
PtsTot{
14-218
3. Install th€ piston in the clutch drum. Apply pressure
and rotate it to ensure proper seating, Lubricate thepiston O-ring with ATF betore insta ing the piston.
NOTE: Oo not pinch the O-ring by installing the pis_ton with too much force.
CLUTCH DRUM
Install the return spring, and spring retainer, thenposition the snap ring on the retainer.
4.
SI{AP RING
SPAI'{G RETAIIIER
REIURN SPRING
CLUTCH DRUM
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5. Install the specialtools as shown
CLUTCH SPRINGCOMPRESSORBOLT ASSEMALY07GAE - PG{0200 orOTGAE - PG|(IMA
CLUTCH SPRINGCOMPRESSORATTACHMENT07LAE - PX40100
CLUTCH SPRINGCOMPRESSORATTACHMENT07LAE - PX40100 orO?HAE - PL5O1OO
CLUTCH SPRINGCOMPRESSORATTACHMENT07LAE - PXaOI 0o
CLUTCH SPRINGCOMPRESSORATTACHMENT07LAE - PX4010O ol07HAE - PL50100CLUTCH SPRINGCOMPBESSORAOL| ASSEMALY07GAE - PG/9t200 otOTGAE - PG/(,20A
CAUTION: It sither end of the spscial tool is sot
over an area of the spring retain€l which is unsup'
ported by the return spring, the retainer may be
damaged. Be sure the special tool is adiusted to
have full contaqt with th€ spring ratainel.
Set here.
SPECIAL TOOL
SPRING RETAINER
6. Compress the return spring.
(cont'd)
Do not set here.
14-219
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Clutch
Installthe snap ring.
Reassembly (cont'd)
7.
S AP RIIG
8. Remove the special tools.
9, Install the disc spring in the direction shown.
1ST, 2ND, 4TH, lST-HOLD CLUTCH:
3RD CLUTCH:
Dlsc sPRrrtc
CIUTCH ORUM
otsc sPfitl{c
14-220
10.Soak the clutch discs thoroughly in ATF for a mini_mum of 30 minutes. Before installing the platesand discs, make sure the inside of the clutch drumis free of din or other foreign matter
Starting with a clutch plate, alternatelv install theclutch plates and discs. Install the clutch end platewith its flat side toward the disc.
CLUTCH EI{D PI.ATEInstall in this directior.
CLUTCHCLUTCH EI{D PLATE
12. Install the snap ring.
SCREWDRIVER
't1.
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13. Measure the clearance between the clutch end plate
and top disc with a dial indicator. Zero the dial indi-
cator with the clutch end plate lowered, and lift it up
to the snap ring. The distance that the clutch end
plate moves is the clearance between it and the top
dtsc.
NOTE: Take measurements in at least three places'
and use the average as the actual clearance.
Clutch End Ptate-to-Top Disc Clearance:
ClutchService Limit
'l st
2nd
3rd
4th
lst-hold
0.65 - 0.85 mm (0.026 - 0.033 in)
0.40 - 0.60 mm (0.016 - 0.024 in)
0.40 - 0.60 mm (0.016 - 0.024 in)
0.40 - 0.60 mm (0.016 - 0.024 in)
0.50 - 0.80 mm (0.020 - 0.031 in)
SNAP RING
lf the clearance is not within the service limits, select
a new clutch end plate from the following table
NOTE: lf the thickest clutch end plate is installed,
but the clearance is still over the standard, replace
the clutch discs and clutch plates.
MARK
I I rnictness
--:--l----T
14.
CLUTCH END PLATE
14-221
lST CLUTCH END PLATES
2ND and 4TH CLUTCH END PLATES
3RD CLUTCH END PLATES
lST-HOLD CLUTCH END PLATES
MarkThicknass'I22551 P56 - N002.1 mm (0.083 in)
222552-P56-N002.2 mm (0.087 in)
322553 - P56 N002 3 mm (0.091 in)
22554-P56-NOo2.4 mm (0.094 in)
522555 P56 - N002.5 mm {0.098 in)
622556 P56 - N002 6 mm (0.102 in)
722557 - P56 N002.7 mm (0.106 in)
822558 - P56 N002.8 mm (0.110 in)
I22559 - P56 N002.9 rnm (0.114 in)
1022s60 - P56 N003.0 mm (0.118 in)
MarkParl NumberThickness
622556-P56-N002.6 mm (0.102 in)
122557 P56 - N002.7 mm (0.106 in)
822558-P56-N002.8 mm (0.110 in)
22559-P56-N002.9 mm (0.114 in)
1022560 - P56 N003.0 mm (0.118 in)'1122561 PDM - 0003.1 mm (0.122 inl
1222562 - PDM - 0003.2 mm {0.126 in)
1322563 PDM - 0003.3 mm (0.130 in)
22564 PDM - 0003.4 mm (0.134 in)
22565 PDM - 0003.5 mm (0.138 in)
22566 PDM - 0003.6 mm 10.142 in)
1722567-PDM-0003.7 mm (0.146 in)
MarkPart NumberThiclness
I22558 P56 - N002.8 mm (0.110 inl
922559 P56 - N002.9 mm (0.114 in)
1022560 P56 - N003.0 mm (0.118 in)
1122561 PD[4 - 0003.1 mm (0.122 in)
1222562 - PDM 0003.2 mm (0.126 in)
t322563-PDM-0003.3 mm (0.130 in)'1422564-PDN4-0003.4 mm (0.134 in)
1522565-PD[,l-0003.5 mm (0.138 in)
22566 PDM - 0003.6 mm (0.142 in)'t122567 - PoM - 0003.7 mm {0.146 in)
Thickness
2255r-PS5-0032.1 mm (0.083 in)
22552 - PS5- 0032.2 mm {0.087 in)
322553 PS5 - 0032.3 mm (0.091 in)
22554, PS5 - 0032.4 mm (0.094 in)
22555 PS5 - 0032.5 mm (0.098 in)
622556 PS5 - 0032.6 mm {0.102 in)
722557 - PSs 0032.7 mm (0.106 in)
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Transmission
28.
Reassembly (cont'd)
PARX GEAR
ONE.WAY CLUTCH
BEARING
Install the mainshaft speed ssnsor (with new O-ring) on the transmission housing.
Install the park lever on the control shaft, theninstall the lock bolt with a new lock washer. Do notbend the lock tab of the lock washer in this step;bend it after checking the park pawl engagement instep 45.
Assemble the one-way clutch and the park gear onthe countershaft 1st gear (see page l4-2Og).
Lubricate these pans with ATF:. Countershaft threads. Old locknut threads and flat end. Old conical spring washer. Park gear contact area with conical springwasner
Install the countershaft 1st gear collar, needle bear-ing, and the countershaft 1st gear/park gear assem-bly on the countershaft.
Install the park pawl shaft. pawl spring, pawl. andpawl stop on the transmission housing, thenengage the pawl with th€ park gear.
31.
PAWL
I
I
a
STOP
LOCK BOLT
PAWL SHAFT
COUNIERSHAFTCOUNTERSHAFTlST GEAR COLLAR
14-254
33. Install the old locknut and the old conical springwasher on ths countershaft. Tighten the old locknutto seat the park gear to the specified torque, thenremove th€ washer and locknut. The locknut hasleft-hand threads. Do not use an impact wrench.Always use a torque wrench to tighten the locknut.
TOROUE: 103 N.m {10.5 kgf.m, 75.9 lbnft)
34. Slip the specialtool ontothe mainshaft.
MAINSHAFT07GAB - PF50101 or07GAB - PF501q)
PARK GEAR
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5C.
36.
Install the sub-shaft lst gear on the sub-shaft.
Install the mainshaft 1st gear collar, mainshaft 1st
gear, needle bearing, thrust needle bearing, and the
thrust washer on the mainshaft.
Wrap the shaft splines with tape to prevent O-ring
damage, then install new O-rings on the mainshaft
lnstallthe 1st clutch assemblv on the mainshaft
lST CLUTCHASSEMELY
O.RINGS
,te
SUB.SHAFTlST GEAR
.A/.b"'"wt
THRUST WASHER
IHRUST NEEDLEBEANING
NEEDLE BEARING
MAINSHAFT1ST GEAR
MAINSHAFT
39.
1ST GEARCOLLAB
Align the hole of the sub-shaft lst gear with the
hole of the transmission housing, then insert an 8
mm pin to hold the sub-shaft while tightening the
sub-shaft locknut.
40. Install new conical spring washers and new lock-
nuts on each shaft. Install the washers in the direc-
tion shown.
41. Tighten the locknuts to the specified torque.
Mainshaft and countershaft locknuts have left-hand
threads. Do not use an impact wrench. Always use
a torque wrench to tighten the locknuts.
LOCKNUT TOROUE:
MAINSHAFT: 78 N.m (8.0 kgf'm, 58 lbf'ft)
COUNTERSHAFT: 103 N.m (10.5 kgf.m, 75.9 lbf'ft)
SUB-SHAFT: 93 N.m {9.5 kgf'm, 69 lbf'ft|
MAINSHAFT
SU8-SHAFT LOCKNUT
LOCXNUT Left-handthreads
CONICAL SPBING WASH€RSlnstall in this direction-
42. Stake each locknut using a 3.5 mm punch.
0.7 - 1.2 mm
{0.03 - 0.05 inl
PIN8 mm pin,
commerciallyavailable
COUNTENSHAFTLOCKNUTLeft-hand threads
PUNCH3.0 - 3.5 mm10.12 - 0.1il inl
LOCKNUTPoint to bestaked.
(cont'd)
14-255
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Description
Rear Differential
Outline
The Real-time 4WD-Dual Pump System model has a hydraulic clutch and a differential mechanism in the rear differential
assembly. Under normal conditions, the vehicle is driven by the front wheels. However, depending on to the driving force
of the front wheels and the road conditions. the system instantly transmits appropriate driving force to the rear wheels
without requiring the driver to switch between 2WD (tront wheel drive) and 4WD (four wheel drive). The switching mecha-
nism between 2WD and 4WD is integrated into the rear differential assembly to make the system light and compact.
ln addition, the dual-pump system switches off the rear-wheel-drive force when braking in a forward gear. This allows the
braking system to work properly on models equipped with an Anti-lock Braking System (ABS).
Construction
The rear differential assembly consists of the torque control differential case assembly and the rear differential carrier
assembly. The torque control differential case assembly consists of the differential clutch assembly, the companion
flange, and the oil pump body assembly. The rear differential carrier assembly consists of the differential mechanism. The
differential drive and driven gears are hypoid gears.
The oil pump body assembly consists of the front oil pump, the rear oil pump, the hydraulic control mechanism, and the
clutch piston. The clutch piston has a disc spring that constantly provides the differential clutch assembly with a preset
torque to Drevent abnormal sound.
The clutch guide in the differential clutch assembly is connected to the propeller shaft via the companion flange, and it
receives the driving force lrom the transfer assembly. The clutch guide rotates the clutch plate and the front oil pump in
the oil pump body.
The clutch hub in the differential clutch assembly has a clutch disc that is splined with the hypoid drive pinion gear. The
hypoid drive gear drives the rear oil pump.
The front and rear oil pumps are trochoidal pumps. The rear oil pump capacity is 2.5 percent larger that the front oil pump
to handle the rotation difference between the front and rear wheels caused by worn front tires and tight corner braking.
The oil pumps are designed so the fluid intake works as a fluid discharge when the oil pumps rotate in reverse. Genuine
Honda CVT fluid is used instead of differential fluid.
Operation
When there is a difference in rotation speed between the front wheels (clutch guide) and rear wheels (hypoid driven gear),
hydraulic pressure from the front and rear oil pumps engages the differential clutch, and drive force from the transler
assembly is applied to the rear wheels.
The hydraulic pressure control mechanism in the oil pump body selects 4WD mode when the vehicle is started abruptly,
or when accelerating in a forward or reverse gear (causing rotation difference between the front and rear wheels). or
when braking in reverse gear {when decelerating). lt switches to 2WD mode when the vehicle is driven at a constant speed
in forwar! or reverse gear (when there is no rotation difference between the front and rear wheels), or when braking in a
fo rwa rd gear (when decelerating).
To protect the system, the differential clutch assembly is lubricated by hydraulic pressure generated by the oil pumps in
both 4WD and 2WD modes. Also, the thermal switch relieves the hydraulic pressure on the clutch piston and cancels 4WD
mode if the temDerature of the differential fluid rises above normal.
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TOROUE CONTROL OIFFERENTIAL
REAR DIFFERENTIAL ASSEMBLY
OIL PUMP BODY
OIFFERENTIAL CLUTCHHYPOID DRIVEPINION GEAR
OIFFERENTIAL CARRIER
DIFFERENTIAL
HYPOID RING GEAR
DIFFERENTIAI- HOUSING
REAR OII- PUMP
ASSEMBLY
CLUTCH GUIDE
COMPANION FLANG€
CLUTCH HUB
CLUTCH PLATE
HYDRAULIC CONTROL SYSTEM
CLUTCH PISTON
CLUTCH DISC
REAR OIL PUMP
FRONT OIL PUMP
DISC SPRINGFRONT OIL PUMP
DIFFEREMT|AL CLUTCHASSEMBI-Y
THERMAL SWITCHRELIEF VALVEOIL STRAINER
15-5
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Description
Hydraulic Flow
Forward Start and Acceleration l4WD)During a forward start and forward acceleration, the dual pump system can engage four wheel drive.lf the front wheels spin faster than the rear wheels, the front oil pump spins faster than the rear oil pump. The front pump
draws fluid through check valve B and discharges it. Some of the discharged fluid is drawn in the by the rear oil pump.The remaining fluid will pass through check valve E into the clutch piston. There, hydraulic pressure is regulated by twoorifices.
The regulated hydraulic pressure at the clutch piston pushes the plates and discs of the clutch together to form a connec-tion. The engaged clutch then passes driving force from the transfer assembly to the rear wheels, producing 4WD.
oRrFtcEsFRONT OIL PUMPREAR OIL PUMP
Forward Driving at Constant Speed lzWD)When driving forward at a constant speed (cruising), the dual pump system functions in two wheel drive mode.The rotation speed of the front and rear wheels is the same, so the speed of the front and rear pumps is also the same.Fluid discharged by the front oil pump is drawn in by the rear oil pump and is circulated through the system. Becausethere is no pressure built up at the clutch piston, the clutch does not engage, and the vehicle remains in 2WD (front wheeldrive).
FRONT OIL PUMP
15-6
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