Page 2721 of 3000
PS–10POWER STEERING – VANE PUMP
PS
8. REMOVE VANE PUMP ASSEMBLY
(a) Using SST, loosen bolt (A) and remove bolt (B), and
then remove the vane pump assembly.
SST 09249-63010
(b) Remove the bolt from the vane pump assembly.
DISASSEMBLY
1. HOLD VANE PUMP ASSEMBLY
(a) Using SST, hold the vane pump assembly in a vise.
SST 09630-00014 (09631-00132)
2. REMOVE POWER STEERING SUCTION PORT UNION
(a) Remove the bolt and the power steering suction port
union from the vane pump front housing.
(b) Using a screwdriver, remove the O-ring from the
power steering suction port union.
3. REMOVE POWER STEERING FLUID PRESSURE
SWITCH
NOTICE:
Perform this procedure only when the power
steering fluid pressure switch is replaced.
C158999E01
C135238
C141305E01
C133179
Page 2722 of 3000
POWER STEERING – VANE PUMPPS–11
PS
(a) Remove the power steering fluid pressure switch
from the vane pump front housing.
4. REMOVE FLOW CONTROL VALVE ASSEMBLY
(a) Remove the pressure port union from the vane
pump front housing.
(b) Remove the O-ring from the pressure port union.
(c) Remove the flow control valve assembly and the
flow control valve compression spring from the vane
pump front housing.
5. REMOVE VANE PUMP REAR HOUSING
(a) Remove the 4 bolts and vane pump rear housing
from the vane pump front housing.
(b) Using a screwdriver, remove the O-ring from the
vane pump rear housing.
HINT:
Tape the screwdriver tip before use.
6. REMOVE VANE PUMP SHAFT WITH PULLEY
(a) Using 2 screwdrivers, remove the vane pump shaft
snap ring from the vane pump shaft with pulley.
(b) Remove the vane pump shaft with pulley.
C133180
C158998
C107024
C107025E02
C057767
Page 2723 of 3000
PS–12POWER STEERING – VANE PUMP
PS
7. REMOVE VANE PUMP ROTOR
(a) Remove the 10 vane pump plates.
(b) Remove the vane pump rotor.
8. REMOVE VANE PUMP CAM RING
(a) Remove the vane pump cam ring from the vane
pump front housing.
9. REMOVE VANE PUMP FRONT SIDE PLATE
(a) Remove the vane pump front side plate from the
vane pump front housing.
(b) Using a screwdriver, remove the O-ring from the
vane pump front side plate.
HINT:
Tape the screwdriver tip before use.
(c) Remove the O-ring from the vane pump front
housing.
C114697
C114698
C114699
C107029E02
C114700
Page 2724 of 3000

POWER STEERING – VANE PUMPPS–13
PS
10. REMOVE VANE PUMP HOUSING OIL SEAL
(a) Using a screwdriver and a shop rag or a piece of
cloth, remove the vane pump housing oil seal from
the vane pump front housing.
NOTICE:
Be careful not to damage the vane pump front
housing.
INSPECTION
1. INSPECT VANE PUMP SHAFT AND BUSHING IN
VANE PUMP FRONT HOUSING
(a) Using a micrometer, measure the outer diameter [a]
of the vane pump shaft with pulley.
(b) Using vernier calipers, measure the inner diameter
[b] of the vane pump front housing bushing.
(c) Calculate the oil clearance.
Oil clearance = Inner diameter of the bushing [b] -
Outer diameter of the shaft [a]
Maximum oil clearance:
0.07 mm (0.0028 in.)
If the oil clearance exceeds the maximum, replace
the vane pump assembly.
2. INSPECT VANE PUMP ROTOR AND VANE PUMP
PLATE CLEARANCE
(a) Using a micrometer, measure the thickness of the
vane pump plates.
Standard thickness:
1.405 to 1.411 mm (0.05531 to 0.05555 in.)
If the thickness is not within the specified range,
replace the vane pump assembly.
(b) Using a feeler gauge, measure the clearance
between the side face of the vane pump rotor
groove and the vane pump plates.
Maximum clearance:
0.03 mm (0.0012 in.)
If the clearance exceeds the maximum, replace the
vane pump assembly.
C114701E02
C132029E04
C101977E01
C101978E01
Page 2725 of 3000

PS–14POWER STEERING – VANE PUMP
PS
3. INSPECT FLOW CONTROL VALVE ASSEMBLY
(a) Coat the flow control valve assembly with power
steering fluid and check that it falls smoothly into the
flow control valve due to its own weight.
If the control valve does not fall into the hole
smoothly, replace the vane pump assembly.
(b) Check the flow control valve assembly for leaks.
Close one of the holes and apply compressed air,
392 to 490 kPa (4 to 5 kgf/cm
2, 57 to 71 psi), into
the opposite side hole, and confirm that air does not
come out from the holes in the ends of the flow
control valve assembly.
If air leaks, replace the vane pump assembly.
4. INSPECT FLOW CONTROL VALVE COMPRESSION
SPRING
(a) Using vernier calipers, measure the free length of
the flow control valve compression spring.
Minimum free length:
29.2 mm (1.150 in.)
If the length is less than the minimum, replace the
vane pump assembly.
5. INSPECT PRESSURE PORT UNION
If the union seat in the pressure port union is severely
damaged, replace the vane pump assembly.
6. INSPECT TOTAL PRELOAD
(a) Check that the pump rotates smoothly without
abnormal noise.
(b) Temporarily install the service bolt.
Recommended service bolt:
Thread diameter:
10 mm (0.39 in.)
Thread pitch:
1.25 mm (0.0492 in.)
Bolt length:
50 mm (1.97 in.)
(c) Using a torque wrench, check the pump rotating
torque.
Rotating torque:
0.27 N*m (2.8 kgf*cm, 2.4 in.*lbf) or less
If the rotating torque is not as specified, check the
vane pump housing oil seal.
G030668E01
R007591E10
C132032E02
C053369E10
Page 2726 of 3000

POWER STEERING – VANE PUMPPS–15
PS
REASSEMBLY
NOTICE:
Before installation, coat the parts indicated by arrows
with power steering fluid (See page PS-7).
1. INSTALL VANE PUMP HOUSING OIL SEAL
(a) Coat a new vane pump housing oil seal lip with
power steering fluid.
(b) Using SST and a press, install the vane pump
housing oil seal until it is flush with the vane pump
front housing end surface.
SST 09950-60010 (09951-00280), 09950-70010
(09951-07100)
NOTICE:
Make sure that the oil seal is installed facing in
the correct direction as shown in the illustration.
2. INSTALL VANE PUMP SHAFT WITH PULLEY
(a) Coat the inside surface of the bushing in the vane
pump front housing with power steering fluid.
(b) Gradually insert the vane pump shaft with pulley.
NOTICE:
Do not damage the oil seal lip in the front
housing.
HINT:
Wrap protective tape around the spline of the vane
pump shaft with pulley in order to prevent damage
to the oil seal.
3. INSTALL VANE PUMP FRONT SIDE PLATE
(a) Coat a new O-ring with power steering fluid and
install it into the vane pump front housing.
(b) Coat a new O-ring with power steering fluid and
install it onto the vane pump front side plate.
C114702E01
C114703E01
C132035
C107035
Page 2727 of 3000
PS–16POWER STEERING – VANE PUMP
PS
(c) Align the notch of the vane pump front side plate
with that of the vane pump front housing, and install
the vane pump front side plate.
NOTICE:
Make sure that the vane pump front side plate is
installed facing in the correct direction.
4. INSTALL VANE PUMP CAM RING
(a) Align the notch of the cam ring with that of the vane
pump front side plate, and install the vane pump
cam ring with the inscribed mark facing upward.
NOTICE:
Make sure that the vane pump cam ring is
installed facing in the correct direction.
5. INSTALL VANE PUMP ROTOR
(a) Install the vane pump rotor.
HINT:
The vane pump rotor can be installed in both
directions.
(b) Coat the 10 vane pump plates with power steering
fluid.
C132040E01
C139139E01
C107038
Page 2728 of 3000
POWER STEERING – VANE PUMPPS–17
PS
(c) Install the vane pump plates with the round end
facing outward.
NOTICE:
Make sure that the vane pump plates are
installed facing in the correct direction.
6. INSTALL VANE PUMP SHAFT SNAP RING
(a) Using a screwdriver and a snap ring expander,
install a new vane pump shaft snap ring onto the
vane pump shaft with pulley.
NOTICE:
Make sure that the vane pump shaft snap ring is
securely installed in the vane pump shaft
groove.
7. INSTALL VANE PUMP REAR HOUSING
(a) Coat a new O-ring with power steering fluid and
install it onto the vane pump rear housing.
(b) Align the straight pin of the vane pump rear housing
with the notches of the vane pump cam ring, vane
pump front side plate, and vane pump front housing.
C141370E01
D030336E01
C107040
C136780E01