power steering fluid SUZUKI GRAND VITARA 2002 2.G Service User Guide

YH4
GRAND
VITARA
3B1-6 POWER STEERING (P / S) SYSTEM
ConditionPossible CauseCorrection
Vehicle pulls to
one side during
straight driving
Mismatched or uneven tire

Low or uneven tire inflation pressure

Brake dragging in one wheel

Front end alignment out of order

Rear end alignment out of order

Malfunction of control valve in gear boxReplace tire.
Inflate tires to proper pressure or
adjust right & left tires inflation
pressure.
Repair.
Check and adjust front end
alignment.
Check and adjust rear end
alignment.
Replace gear box.
Steering wheel
play is large and
vehicle wanders
Refer to ªDiagnosisº in Section 3.
Fluid leakage
Loose joints of (hydraulic pressure)
pipes and hoses

Deformed or damaged pipes or hosesRetighten.
Replace defective part.
Abnormal noise
Air drawn in due to insufficient amount of fluid

Air mixed into fluid from pipes or hoses

Slipping (loose) P / S belt

Worn P / S belt

Loose gear box fastening bolt

Loose linkage or joints

Pipes or hoses in contact with part of
vehicle body

Vanes of P / S pump defective

Malfunction of control valve in gear box

Bearing of P / S pump shaft defectiveAdd fluid and purge air.
Replace pipes or hoses.
Adjust belt tension.
Replace belt.
Retighten bolts.
Retighten.
Install pipes and hoses correctly.
Replace defective part.
Replace gear box.
Replace bearing.
No idle up
Power steering pressure switch defectiveReplace power steering
pressure switch.

YH4
GRAND
VITARA
POWER STEERING (P / S) SYSTEM 3B1-7
STEERING WHEEL
STEERING WHEEL PLAY CHECK
Check steering wheel for looseness or rattle by trying to move it in
its shaft direction and lateral direction.
If found defective, repair or replace.
Check steering wheel for play, holding car in straight forward condi-
tion on the ground and with engine stopped.
Steering wheel play ªaº: 0 ± 30 mm (0 ± 1.2 in.)
If steering wheel play is not within specification, inspect as follows
and replace if found defective.

Tie-rod end ball stud for wear

Lower ball joint for wear

Steering shaft joint for wear

Steering pinion or rack gear for wear or breakage

Each part for looseness
STEERING FORCE CHECK
1) Place vehicle on level road and set steering wheel at straight-
ahead position.
2) Check that tire inflation pressure is as specified. (Refer to tire
placard.)
3) Start engine and keep it running till power steering fluid is
warmed to 50 to 60C (122 to 140F).
4) With engine idling, measure steering force by pulling spring ba-
lancer hooked on steering wheel in tangential direction.
Steering force: Less than 50 N (5.0 kg, 11.0 lb)
POWER STEERING FLUID
POWER STEERING FLUID LEVEL CHECK
With engine stopped, check fluid level indicated on P / S fluid reser-
voir, which should be between ªMAXº and ªMINº marks. If it is lower
than ªMINº mark, fill fluid up to ªMAXº mark.
NOTE:

Be sure to use an specified power steering fluid.

Fluid level should be checked when fluid is cool.

YH4
GRAND
VITARA
POWER STEERING (P / S) SYSTEM 3B1-9
IDLE UP SYSTEM
IDLE UP SYSTEM CHECK
1) Warm up engine to normal operating temperature.
2) Turn A / C switch OFF, if equipped.
3) Turn steering wheel fully and check idle speed.
Engine idle speed drops a little momentarily when steering
wheel is turned fully but returns to its specified level immediately.
If power steering pressure switch connector is connected, check
the same with that connector disconnected. Momentary drop of
engine idle speed should be less when it is connected than when
disconnected.
FLUID
FLUID LEAKAGE CHECK
Start engine and turn steering wheel fully to the right and left so that maximum hydraulic pressure is provided. Then
visually check gear box, P / S pump and P / S fluid reservoir themselves and each joint of their connecting pipes for
leakage.
CAUTION:
Never keep steering wheel turned fully for longer than 10 seconds.

YH4
GRAND
VITARA
1. P / S fluid reservoir
2. Attachment
3. Gasket4. Union bolt
5. High pressure side
6. Low pressure side
1. P / S fluid reservoir
2. Gauge valve (open)
3. P / S pump4. P / S gear box
5. High pressure side
6. Low pressure side
3B1-10 POWER STEERING (P / S) SYSTEM
HYDRAULIC PRESSURE IN P / S CIRCUIT
HYDRAULIC PRESSURE CHECK
1) After cleaning joint of high pressure hose and P / S pump thor-
oughly, disconnect hose from pump and install special tool (oil
pressure gauge, attachment and hose).
Tighten each flare nut to specified torque.
CAUTION:
Take care not to cause damage to A / C condenser during
service operation, if equipped.
Special Tool
(A): 09915-77410 (Oil pressure gauge)
(B): 09915-77420
2) Check each connection for fluid leakage and bleed air.
Refer to ªAIR BLEEDING PROCEDUREº in this section.
3) With engine idling, turn steering wheel and warm up engine till
temperature of fluid in P/S fluid reservoir rises to 50 ± 60
C (122
± 140
F).
4) Check back pressure by measuring hydraulic pressure with en-
gine idling and hands off steering wheel.
Back pressure: Lower than 1000 kPa (10 kg / cm
2, 142 psi)
When back pressure is higher than specified values, check con-
trol valve and piping for clogging.

YH4
GRAND
VITARA
1. P / S fluid reservoir
2. Gauge valve (shut)
3. Oil pressure gauge
4. P / S pump
5. P / S gear box
1. P / S fluid reservoir
2. Gauge valve (open)
3. Oil pressure gauge
4. P / S pump
5. P / S gear box
POWER STEERING (P / S) SYSTEM 3B1-11
5) Check relief pressure

Increase engine speed to about 1,500 r / min (rpm). Close
gauge valve gradually while watching pressure increase indi-
cated by gauge and take reading of relief pressure (maximum
hydraulic pressure).
Relief pressure:
6200 ± 7000 kPa
(62 ± 70 kg / cm
2, 882 ± 995 psi) G16 Type engine. . . . . . .
6700 ± 7500 kPa
(67 ± 75 kg / cm
2, 953 ± 1067 psi) J20 Type engine. . . . . . .
7050 ± 7850 kPa
(70.5 ± 78.5 kg / cm
2, 1003 ± 1116 psi) H25 Type engine. .

When it is higher than specified values, possible cause is mal-
function of relief valve.

When it is lower than specified values, possible cause is either
failure of P / S pump or settling of relief valve spring.
CAUTION:
Be sure not to close gauge valve for longer than 10 se-
conds.

Next, open gauge valve fully and increase engine speed to
about 1,500 r / min (rpm). Then turn steering wheel to the left
or right fully and take reading of relief pressure.
Relief pressure:
6200 ± 7000 kPa
(62 ± 70 kg / cm
2, 882 ± 995 psi) G16 Type engine. . . . . . .
6700 ± 7500 kPa
(67 ± 75 kg / cm
2, 953 ± 1067 psi) J20 Type engine. . . . . . .
7050 ± 7850 kPa
(70.5 ± 78.5 kg / cm
2, 1003 ± 1116 psi) H25 Type engine. .

When it is higher than specified values, possible cause is mal-
function of relief valve.

When it is lower than specified values, possible cause is failure
in steering gear box. Replace gear box.
CAUTION:
Be sure not to hold steering wheel at fully turned posi-
tion for longer than 10 seconds.
BOOT
STEERING RACK BOOT CHECK
Check boot for crack and damage which, if any, means possibility
of rusty gear, entry of dust or lack of grease. Also, check if any of
such faulty conditions exists.
Check steering rack boot for dent or breakage.
If there is a dent, keep boot in most compressed state for some se-
conds to correct dent.

YH4
GRAND
VITARA
3B1-12 POWER STEERING (P / S) SYSTEM
TIE-ROD END BOOT CHECK
Check boot for crack and damage and if any, replace it with a new
one.
AIR BLEEDING PROCEDURE
1) Hoist the front end of vehicle and apply safety stands.
2) Fill P / S fluid reservoir with fluid up to specified level.
NOTE:
Before starting engine, place transmission gear shift lever
in ªNeutralº (shift selector lever to ªPº range for A / T mod-
el), and set parking brake.
3) After running engine at idling speed for 3 to 5 seconds, stop it
and add fluid to satisfy specification.
4) With engine stopped, turn steering wheel to the right and left as
far as it stops, repeat it a few times and fill fluid to specified level.
5) With engine running at idling speed, repeat stop-to-stop turn of
steering wheel till all foams in P / S fluid reservoir are gone.
NOTE:
Make sure to bleed air completely. If air remains in fluid, P / S
pump may make humming noise or steering wheel may feel
heavy.
6) Finally check to make sure that fluid is filled to specified level.

YH4
GRAND
VITARA
1. High pressure pipe
2. Union bolt3. Low pressure hose
4. Steering lower shaft bolt
3B1-14 POWER STEERING (P / S) SYSTEM
3) After installing wheels, lower vehicle and tighten wheel nuts to
specified torque.
Tightening Torque
(a): 100 N
.m (10.0 kg-m, 72.5 lb-ft)
4) Check that proper amount of toe-in is obtained by referring to
ªFRONT WHEEL ALIGNMENTº.
5) After confirming proper amount of toe-in, tighten tie-rod end lock
nut to specified torque.
Tightening Torque
(a): 65 N
.m (6.5 kg-m, 47.0 lb-ft)
POWER STEERING GEAR BOX
ASSEMBLY
REMOVAL
1) Take out fluid in P / S fluid reservoir with syringe or such.
2) Disconnect high pressure pipe from steering gear box by remov-
ing union bolt.
NOTE:
As fluid flows out of disconnected joints, put a receptacle
under joints or a plug to pipe.
3) Disconnect low pressure hose from steering gear box.
NOTE:
As fluid flows out of disconnected joints, put a receptacle
under joints or a plug to hose.
4) Remove steering lower shaft bolt.
5) Hoist vehicle and remove both right and left wheels.
6) Disconnect both right and left tie rod ends from knuckle, refer to
steps 2) to 3) of ªTIE-ROD END REMOVALº in this section.

YH4
GRAND
VITARA
1. Steering gear box mounting bolts
1. Mark
2. Gear case
3. Pinion shaft
POWER STEERING (P / S) SYSTEM 3B1-15
7) Remove steering gear box mounting bolts and then remove
steering gear box from vehicle.
Steering gear box found to be in defective condition should be
replaced with a new one.
CAUTION:
Never disassemble P / S gear box. If perform this prohib-
ited service, it will affect original performance.
INSTALLATION
Reverse removal procedure for installation of steering gear box
noting the following points.

After confirming that front tire is in straight position, install steering
gear box to body temporarily. Next, with tie-rod end installed to
knuckle, set rack in position close to neutral. Then obtain the neu-
tral state by aligning match marks on pinion shaft and steering
gear case and insert steering lower joint into pinion shaft.
CAUTION:
Be sure to confirm that steering wheel and front tires
(wheels) are in straight position when inserting steering
lower joint into steering pinion shaft.

If a plug was put to disconnected pipe when removing steering
gear box, remove that plug before reconnecting pipe.

Use specified torque as given below.
Tightening Torque
(a): 25 N
.m (2.5 kg-m, 18.0 lb-ft)
(b): 40 N
.m (4.0 kg-m, 29.0 lb-ft)
(c): 25 N
.m (2.5 kg-m, 18.0 lb-ft)
(d): 55 N
.m (5.5 kg-m, 40.0 lb-ft)

After installation, be sure to fill specified power steering fluid and
bleed air.

Check toe setting. Adjust as required. (Refer to Front End Align-
ment.)

YH4
GRAND
VITARA
POWER STEERING (P / S) SYSTEM 3B1-17
1. Tie-rod
2. Steering rack
3. Boot
4. Mark
1. Tie-rod lock washer
2. Tie-rod
3. Steering rack
4. Aluminium plate
5. Vise
1. Tie-rod
2. Mark
3. Lock nut
4. Tie-rod end
5. Knuckle
6. Nut
2) Install tie-rod end lock nut and tie-rod end to tie-rod. Position lock
nut to the mark made in removal.
3) Install steering gear box assembly by referring ªPOWER
STEERING GEAR BOX ASSEMBLY INSTALLATIONº in this
section.
After installation, fill specified P / S fluid and bleed air from sys-
tem. Then check toe setting and adjust as required.
RACK BOOT AND TIE-ROD
(FOR CANVAS TOP LH MODEL)
REMOVAL
1) Remove steering gear case, refer to ªPOWER STEERING
GEAR BOX ASSEMBLY REMOVALº in this section.
2) For ease of adjustment after installation, make marking of tie-rod
end lock nut position of tie-rod thread.
3) Loosen tie-rod end lock nut and remove tie-rod end.
4) Remove boot band and clip.
5) Remove boot from tie-rod.
6) Unbend washer (2 places), and remove tie-rod from rack.

YH4
GRAND
VITARA
POWER STEERING (P / S) SYSTEM 3B1-19
Tightening Torque
(a): 60 N.m (6.0 kg-m, 43.5 lb-ft)
(b): 25 N.m (2.5 kg-m, 18.5 lb-ft)
(c): 55 N.m (5.5 kg-m, 40.0 lb-ft)
(d): 11 N.m (1.1 kg-m, 8.0 lb-ft)
(e): 35 N.m (3.5 kg-m, 25.5 lb-ft)
( f ): 40 N.m (4.0 kg-m, 29.0 lb-ft)
(g): 45 N.m (4.5 kg-m, 33.0 lb-ft)
1. Power steering pump assembly
2. Bracket
3. P / S fluid reservoir4. High pressure hose & pipe
5. Suction hose
6. Low pressure return hose7. Oil tank bracket
8. To P / S gear box
[G16 ENGINE MODEL]
[J20 ENGINE MODEL][H25 ENGINE MODEL]
POWER STEERING PUMP