Onvehicle Inspection

DRIVE BELT

Measure the belt tension between alternator pulley and vane pump pulley.

Tension: 11-15 mm/10 kg

Fig. 8-293

Fig. 8-293

FLUID LEVEL

Keep the vehicle level. Warm up the engine. With engine running at 1,000 rpm, turn the steering wheel from lock to lock several times to boost fluid temperature. Fluid temperature:

Fig. 8-294

Fig. 8-294

Inspect for foaming or emulsification. Note that foaming and emulsification indicate the existence of air in the system or that the fluid level is too low.

Fig. 8-295

Fig. 8-295

5. Inspect the fluid level with a dip stick

6. Inspect the complete system for fluid leakage.

Fig. 8-296

BLEEDING

1. Inspect the fluid level and add fluid if necessary.

Fluid: ATF type Dexron

2. Jack up the front of the vehicle and support it on stands.

Fig. 8-297

Fig. 8-297

3. Turn the steering wheel from lock to lock two or three times.

Fig. 8-298

Fig. 8-298

4. Recheck the fluid level.

Fig. 8-299

1,000

5. Start the engine and run it at 1,000 rpm.

6. Turn the steering wheel from lock to lock two or three times.

Fig. 8-300

Fig. 8-300

7. Lower the front of vehicle.

8. Run the engine at 1,000 rpm.

9. Turn the steering wheel from lock to lock several times.

Fig. 8-301

Fig. 8-301

0. Center the steering wheel.

Fig. 8-302

rpm rpm

Below 5 mm

11. Bleeding is complete if the fluid level in the reservoir has not risen excessively and no foaming or emulsification is observed when the engine is stopped.

Maximum rise of fluid level: Below 5mm

12. If foaming or excessive rise of fluid is noticed, repeat step 8—11 until the level is correct.

Fig. 8-303

Fig. 8-303

FLUID REPLACEMENT

01. Jack up the front of the vehicle. 2. Remove the return hose from the fluid reservoir and drain the fluid into a vessel.

Fig. 8-304

Fig. 8-304

Fig. 8-306

3. Turn the steering wheel from lock to lock, while draining the fluid.

4. Connect the return hose to the fluid reservoir.

5. Add fresh fluid

Fluid: ATF type Dexron Capacity:

Vane pump 300 cc

6. Bleed the system.

Fig. 8-307

Fig. 8-307

FLUID PRESSURE INSPECTION

1. Attach a pressure gauge.

(1) Disconnect the pressure hose from the vane pump with SST.

SST [09631-22020]

(2) Connect the gauge side of the pressure gauge to the vane pump.

Fig. 8-308

Fig. 8-308

Connect the valve side of the pressure gauge to the pressure hose with SST.

SST [09631-22020] Bleed the air. Inspect the fluid level.

Fig. 8-309

Oil Temp._

1,000

Fig. 8-310

rpm rpm fl

2. Boost the fluid temperature by turning the steering wheel from lock to lock several times with the engine running at 1,000

rpm.

Fluid temperature: 80°C

3. Measure the fluid pressure generated by the vane pump.

(1) Idle the engine.

(2) Measure the fluid pressure reading with the pressure gauge valve fully closed.

Fluid pressure:

More than 72kg/cm2 (1,022 psi)

Do not keep the valve closed for more than 10 seconds.

(3) If the pressure does not reach 72 kg/ cmz (1,022 psi) within 10 seconds, there is a problem with the vane pump

Fig. 8-311

Fig. 8-311

Measure the fluid pressure utilized in the gear housing.

(1) Fully open the pressure valve.

(2) With the steering wheel at full lock, measure the fluid pressure reading.

Fluid presure:

More than 72 kg/cm2 (1,022 psi)

Fig. 8-312

Pressure Differertial Open /^s Less than { * ' 5kg/cm2

1,000,

,3,000

y

h

Fig. 8-313

5. Measure the-pressure differential under noload running condition (flow control valve operation check).

(1) Fully open the pressure gauge valve.

(2) Measure the fluid pressure with the engine running at 1,000 rpm.

(3) Measure the fluid pressure with the engine running at 3,000 rpm.

Pressure differential: Less than 5 kg/cm2 (71 psi)

(4) If not within limit, check the flow control valve.

STEERING POWER INSPECTION

1. Place the vehicle on flat surface.

2. Turn the steering wheel to the straight ahead position (midpoint).

3. Idle the engine.

Fig. 8-314

ÎL=(Ô)=!

]

î

Measure the steering power at the steering wheel within one turn on both side of midpoint

Steering effort: Less than 6.0 kg

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