Steering: Testing and Inspection

1. STEERING CONDITION





2. MEASUREMENT OF HYDRAULIC PRESSURE

CAUTION: Be sure to complete all items aforementioned in "STEERING CONDITION", prior to measuring hydraulic pressure. Otherwise, pressure can not be measured correctly.

CAUTION:
- Do not leave the valve of pressure gauge closed or hold the steering wheel at stop end for 5 seconds or more in any case, as the oil pump may be damaged due to long keep of these conditions.
- Put cotton cloth waste at a place where fluid drops before pressure gauge is installed. Wipe off split fluid thoroughly after the measurement.

NOTE: Keep engine idling during the measurement.






1) Install STs to power steering pump.
(1) Drain the power steering fluid about 0.35 l (0.4 US qts.) from oil tank.
(2) Remove two bolts securing power steering pipes o engine.
(3) Install ST1, 2 and 3 between power steering pump and pipes using gasket (Part No. 34621AC020) and bolt (Part No. 34620AC010).
ST1 925711000 PRESSURE GAUGE
ST2 340 99AC020 ADAPTER B
ST3 34099AC010 ADAPTER A
(4) Replenish power steering fluid up to specified level.
2) Using STs, measure regulator pressure.

Regulator pressure: 981 kPa (142 psi) or less






3) Using STs, measure relief pressure.

Relief pressure: 7,159 - 7,748 kPa (1,038 - 1,123 psi)


3. MEASUREMENT OF STEERING EFFORT

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- Measurement of steering effort is as shown in the figures.














- Measurement of folding torque of universal joint is as shown in the figures.





NOTE: Using ST, measure resistances of gearbox.

ST 926230000 Spanner

Rotating resistance:
Straight-ahead position within 30 mm (1.18 inch) from rack center Less than 11.18 N (1.14 kg, 2.51 lbs.).
Maximum allowable torque: 15.7 N (3.5 lbs.)

Sliding resistance:

Right-turn steering: 304 N (68 lbs.) or less.

Left-turn steering: 304 N (68 lbs.) or less.

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4. FLUID LEAKAGE

CAUTION: It is likely that although one judges fluid leakage, there is actually no leakage. This is because the fluid split during the last maintenance was not completely wiped off. Be sure to wipe off split fluid thoroughly after maintenance.

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5. NOISE AND VIBRATION






6. CLEARANCE TABLE

CAUTION: This table lists various clearances that must be correctly adjusted to ensure normal vehicle driving without interfering noise, or any other faults.






7. BREAKAGE OF HOSES