Valve set HONDA CR-V 1999 RD1-RD3 / 1.G Owner's Guide

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
www.emanualpro.com

Description
Hydraulic Flow (cont'dl
Reverse Driving at Constant Speed l2WD)when driving in reverse at a constant speed, 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. But, becausethe there is a difference in the capacity between the two pumps, fluid flows through check valve E, and then through ori-Iices. This fluid lubricates and cools the clutch assembly and bearings.ls this condition, only a low pressure is built up at the clutch piston. Therefore the clutch does not engage, and the vehicleremains in 2WD (front wheel drive).
Reverse Deceleration l/tWDl
During reverse deceleration, the dual pump system can engage four wheel drive.When decelerating in reverse direction, the speed of the rear wheels may exceed the speed of the front wheels (due toengine braking). In this condition, the rear oil pump draws fluid through check valves B and C. Fluid discharged from therear oil pump then flows through check valve E to the clutch piston. There, pressure is regulated by two orifices.The regulated hydraulic pressure at the clutch piston may force the plates and discs of the clutch together to form a con,nection. The engaged clutch passes driving force from the transfer assembly to the rear wheels, producing 4WD.
oRtFtcEsREAR OIL PUMP
www.emanualpro.com

Ret. No, I Tool NumbelDescriptionfty Page Reference
o
o
-@
€r
o
@rol
@
o
@
@(}
@
@
07GAF - PH70100
07HAG - SF10100
07GAG - SD40200 or
OTGAG - SD4O2OA
07JGG - 001010A
07MAC - S100200
OTNAD _ SR3O2OA
07NAG SR30900 or
07NAG , SR3OgOA
07RAK - 50401 10
07RAK - 5040120
07406 - 0010001 or
07406 - 0010004
07725 - 0030000
07746 - 0010100
07749 - 0010000
07916 - SA50001
07974 - SA50200 or
07974 - SA5050A
07974 - SA50800
Pilot Collar
Piston Seal Ring Guide
Piston Seal Ring Sizing Tool
Belt Tension Gauge
Ball Joint Remover,23 mm
Cylinder End Seal Remover Attachment
Valve Seal Ring Sizing Tool
P/S Joint Adaptor (Pump)
P/S Joint Adaptor (Hose)
P/S Pressure Gauge
Universal Holder
Attachment, 32 x 35 mm
Driver
Locknut Wrench, 40 mm
Sleeve Seal Ring Sizing Tool
Ball Joint Boot Clip Guide
'l
1
1
1
1
1
1
1
1
1
1
1
1,l
1
1
11-39
17-44
11-44
17 -14't]-31
17 -37't7 -4'l
17-'t6, 17
17-16, 17
11-16, 17
17-26,30't]-42, 43't1-42, 43
11-15't]-42
11-42, 50
* Included in the Belt Tension Gauge Set 07TGG - 001000,4
o@
\J
,/:\
I
o
,€l-
=tt
@@
aA)
l:I/\L----.--.--------_
@o(D(9@@
17-2
www.emanualpro.com

Power Steering Pump
Reassembly
'1.Align the pin of the sub-valve with the oil passage
in pump housing, and push down the sub-valve.
Install the snsp ring properly.
OIL PASSAG€Align the pin of
the oil passage.
#q
;1..*
\SNAP RINGPUMP HOUSING
Install the new pump seal (with its grooved side fac-
ing in) into the pump housing by hand, then install
the pump seal spacer.
Position the pump drive shaft in the pump housing,
then drive it in using a 29 mm socket as shown,
BALL BEARfNG grlu,e un.t
/ /ffi\
1 / t\v4
t/ Y
# I F
PUMP SEALSPAC,ER
ry^
i- d
,O mm CIRCLIP
Hgo
/= PUMP DRIVE SHAFT
@.--#$i":*'
4,
PUMP HOUSING
Install the 40 mm circlip with its radiused side fac-
Ing out.
29 mm SOCKET
17 -2A
7.
5. Coat the pump cover seal with power steering fluid,
and install it into the groove in the pump cover.
OUTER SIDE PLATE
5 mrh ROLLER
lnstall the oute. side plate over the two rollers.
PUMP CAM RING
ROLLER SET HOLES
ROLLERS
Set the pump cam ring over the two rollers with the"' " mark on the cam ring upward.
ROLLER SET HOLES
PUMP COVER
www.emanualpro.com

8.
9.
Asssmble pump rotor to the pump cover,
Set the 10 vanes in the grooves in the rotor, Make
sure that the round ends of the vanes are in contact
with the sliding surface of the cam ring.
PUMP ROTOR
Coat the O-ring with power steering fluid, and
install it into the grooves in the side plate.
ftm GRING
ROL1IR SET HOI,E
SET HOTT
Install the side plate on the cam ring by aligning the
roller set holes in the side Dlate with the rollers.
10.
I
15.2 x 2-1Replace.
Gfooves.
SII'E PLATE
BOLI-ERS
11.
17.
ing, and tighten it.
12. Coat the O-ring with power steering fluid,
tion it into the pump housing.
and posi-
FLANGE BOI-TS20 N.m (2.0 kgt m,14 tbf.ft)
51 x 2.4 mm O-RINGReplace.
13.
14.
lnstall the
ing.
Coat the
fluid.
pump cover assembly in the pump hous-
tlow control valve with power steering
FLOW CONTROL VALVE137 modol)
FLOW CONTBOLVALVEl'98 - 0O modeltl
'15.
16.
Install the flow control valve and spring in the pump
housing.
Coat the O-ring with power steering fluid, and
install it on the flow control valve cap.
Install the flow control valve cap on the pump hous-
Eg
SPRING
15.2 x 2.4 mm O.RING('97 modell16.7 x'1.8 mm O-RING
FLOW CONTROLVALVE CAP49 N.m (5.0 kgl.m,36 tbf.ft)
(cont'd)
17-29
www.emanualpro.com

Power Steering Gearbox
Disassembly (cont'd)
Valve Body Unit Dbassembly
23. Before removing the valve housing, apply vinyltape
to solines of the Dinion shaft.
VALVE HOUSING
Separate the valve housing from the pinion shafv
valve using a press.
Check the inner wall of the valve housing where the
seal ring slides with your finger. lf there is a step in
the wall, the valve housing is worn. Replace the
valve housing.
Note these items during inspection:
o There may be the sliding marks from the seal
ring on the wall of the valve housing. Replace
the valve housing only if the wall is stepped.
. When the valve housing is replaced, install new
shim{s) on the bearing surface of the housing to
adiust the thickness.
Check the inside ofvalve housingfor a step in the wall.
17-38
26. Check for wear, burrs and other damage to the
edges of the grooves in the sleeve.
NOTE: The pinion shaft and sleeve are a precision
matched set. lf either the oinion shaft or sleeve
must be replaced, replace both parts as a set.
SLEEVE SEAL RINGSCheck for Deel off or
27. Remove the circlip and sleeve from the pinion shaft.
www.emanualpro.com

Valve Body Unh Roa$embly
1. Apply vinyl tape to the stepped portion of the pin-
ion shaft, and coat the surface of the vinyl tape with
the power steering fluid.
Vinyl tape(Stopp6d portion)
VALVE OIL SEALReplace.Make sure the spring isseated in the oil seal.
Serling
E
7.
PINION SHAFT
BACKUP RING137 modell
WAVE WASHER{'98 - 00 modelsl
Install the backup ring {'97 model) or wave washer
('98 - 00 models).
Coat the inside surface of the new valve oil seal
with power steering fluid.
Install the valve oil seal with its grooved side facing
opposite the bearing, then slide the valve oil seal
over the pinion shaft, being careful not to damage
the sealing lip.
Apply vinyl tape to the splines and stepped ponion
of the shaft, and coat the surface of the vinyl tape
with the power steering fluid.
Vinyl trp€
O.RINGReplace.Do not twist.R€place-Do not over-expand.
Fit the new O-ring in the groove of the pinion shaft.
Then slide the new valve seal ring over the shaft
and in the groove on the pinion shaft,
Remove the vinyl tape from the pinion shaft.
\/
PINION SHAFT
8.Apply power steering fluid to the surface of the
valve seal ring that was installed on the pinion
shaft.
Apply power steering fluid to the inside of the spe-
cial tool. Set the larger diameter end of the special
tool over the valve seal ring.
VALVE SEAL RINGSIZNG TOOL07NAG - SR309q'ot07NAG - SR3oltoA
Mak€ the valve seal ringfit snugly in the pinion
shatt using th6 other end{smaller diameter end) otthe special tool.
10.
11.
12.
Move the special tool up and down several times to
make the valve seal ring fit in the pinion shaft,
Remove the soecial tool.
Turn the special tool over, and set the smaller diam-
eter end of the specisl tool over the valve seal ring.
Move the special tool up and down several times to
make the valve seal ring fit snugly in the pinion
shaft.
(cont'd)
lrr.rj1
tffifrE-rr.]
r\-''] 7
Usg th6 larg€r diameterend of the specialtoollirst to maketh€ valve seal ringtit in the pinion
shaft.
17-41
www.emanualpro.com

Power Steering Gearbox
13.
Reassembly (cont'd)
Apply power steering fluid to the surface of the spe-
cial tool. Set the new seal rings over the special tool
from the smaller diameter end of the tool. and
expand the seal rings. Install two rings at a time
Jrom each end ofthe sleeve.
Note these items when installing the seal ring:
. Do not over-expand the seal ring. Install the resin
seal rings with care so as not to damage them.
After installation, be sure to contract the seal
rings using the specialtool {sizing tool).
. There are two types of sleeve seal rings: black
and brown. Do not mix the different types of
sleeve seal rings as they are not compatible.
Align the special tool with each groove in the sleeve,
and slide a sleeve seal ring into each groove. After
installation, compress the seal rings with your fin-
gers temporarily.
BALL JOINT BOOT CLIP GUIDE07974 - SA508q)
SLEEVE
Apply power steering fluid to the seal rings on the
sleeve, and to the ehtire inside surface of the special
tool.
14.
15.
SLEEVE SEAL RINGSIZING TOOL07974 - SA502O0 or07974 - SA5020A
16.Insert the sleeve into the special tool slowly.
Move the sleeve each direction several times to
make the seal rings snugly fit in the sleeve. Be sure
that the seal rings are not turned up,
't1.
18. Apply power steering fluid to the surface of the pin-
ion shaft. Assemble the sleeve over the Dinion shaft
by aligning the locating pin on the inside of the
sleeve with the cutout in the shaft. Then install the
new circlip securely in the pinion shaft groove.
Note these items during reassembly:
. Be caretul not to damage the valve seal ring
when inserting the sleeve.
. Install the circlip with its radiused side facing out.
Apply power steering fluid to the seal ring lip of the
valve oil seal. then install the seal in the valve hous-
ing using a hydraulic press and special tools. Install
the valve oil seal with its grooved side facing the tool.
19.
ATTACHMENT,32x35mm077i16 - (x)10100
VALVE OIL SEALReplace.Make sure thespring is in theoilseal.
CIRCLIP
www.emanualpro.com

Power Steering Gearbox
Reassembly (cont'dl
4l. Coat the inside surface of the new cvlinder end seal
with power steering fluid.
CYLINDEB ENO SEALReplace.Make sure the springis in the cylinder end seal.
43.
Stakedposrtron.
Grooved side.
42. Install the cylinder end seal onto the steering rack
with its grooved side toward the piston.
Push in the cylinder end seal with your finger.
When installing the cylinder end seal, be careful not
damage the sealing face of the seal with the threads
and burrs at the staked position of the cylinder
housing.
Remove the vinyl tape from the steering rack, then
remove any residue from the tape adhesive.
Hold the gearbox using a C-clamp as shown.
GEARBOX
44.
45.
C.CLAMP
17-46
46.Grease the inside surtace of the cylinder end, then
install the cylinder end by screwing it into the cylin-
der.
Remove the C-clamp from the gearbox.
After tightening the cylinder end, stake the point of
the cylinder shown below. Stake the cylinder in the
position opposite from where the stake was removed
during disassembly,
NOTE: For '98 - 00 models, go to step 54.
41.
48.
BUSHING
-tGCYLINDER END69 N.m (7.0 kgf.m,51 lbtft)8e careful not to damagethe bushing when insertingthe cylinder end.
49. Select the 32 mm shim(s) ('97 model onlv).
NOTE: Only reinstall the original 32 mm shim(s)
when the steering gearbox is reassembled without
replacing the pinion shaft. valve housing, and gear-
box housing with new ones.
lf the pinion shaft, valve housing, and gearbox
housing are replaced, select the new shim{s) as fol-
lows.
Shim selection:
Set the four 32 mm shims on the bearing surface of the
gearbox housing. Total thickness of the four shims
should equal no more than 0.70 mm.
Shim set: four 32 mm shims (Thickness: 0.10 mm, 0.15
mm, 0.20 mm, 0.25 mm respectively)
NOTE: The four 32 mm shims do not have thickness
identification marks. Measure the thickness of each shim
using a micrometer, and mark the shim for identification.
Stake point, Depth: 1,0 mm (0.04 inl
4.0 mm {0.16 in)
www.emanualpro.com

50. Install the valve body unit on the gearbox. and
tighten the flange bolts to the specified torque.
VALVE BODYFLANGE BOLT20 N.m 12.0 kgt.m, 14lbtft)
ct.
SHIM SET(four shims)
Measure the clearance between the gearbox and
valve body unit using a feeler gauge. Measure the
clearance at the poinl midway between the two
mounting bolts.
GAUGE
Determine the required thickness of the 32 mm
shims by subtracting the clearance obtained in the
step "c" from the total thickness of the four shims.
(Total thickness of the 4 shims) - (Clearance) =
Reouired thickness of the shims
Select the shims so that the total thickness is close
to, but less than, the required thickness.
Example:
Measurement is 0.28 mm (0.011 in);
0.70-0.28=0.42 mm (0.028-0.011 = 0.017 in)
The selected shims should be 0,25 mm (0.010 inl and
0.15 mm (0.006 in) in thickness.
lf the required shim thickness is 0.10 mm or less, no
shrms are necessary.
53. Set the selected 32 mm shims on the bearing sur-
face of the gearbox housing.
VALVE BODY UNITla lbl.frl
Coat the new O-ring with grease, and carefully fit it
on the valve housing.
Apply grease to the needle bearing in the gearbox
housing.
Install the valve body unit on the gearbox housing
by engaging the gears. Note the valve body unit
installation position (direction of line connection).
Tighten the flange bolts to the specified torque.
(cont'd)
FLANGE BOLT20 N.m (2.0 kgf.m,
/a)E?
E
O.RINGReplace.
-6{
NEEDLE BEARING
-6lr
54.
56.
57.
17-47
www.emanualpro.com