Power Steering System: General Description: Specification
POWER ASSISTED SYSTEM SPECIFICATION
| Description | NON-TURBO | TURBO | ||||
| RS, RS sport package, OUTBACK | WRX | STi | ||||
| Whole system | Minimum turning radius | m (ft) | 5.4 (17.7) | 5.7 (18.7) | ||
| Steering angle (Inside-Outside) | 34.5° - 30.3° | 32.9° - 28.5° | ||||
| Steering wheel diameter | mm (in) | 385 (15.16) | 375 (14.76) | |||
| Overall gear ratio (Turns, lock to lock Gear box) | 3.0 | 2.7 | 2.6 | |||
| Gearbox | Type | Rack and pinion, Integral | ||||
| Backlash | 0 (Automatically adjustable) | |||||
| Valve (Power steering system) | Rotary valve | |||||
| Pump (Power steering system) | Type | Vane pump | ||||
| Oil tank | Installed on body | |||||
| Output | cm3 (cu in)/rev. | 7.8 (0.476) | 7.2 (0.439) | 8.5 (0.519) | ||
| Relief pressure | kPa (kg/cm2 , psi) | 6,767 - 7,453 (69 - 76, 981 - 1,081) | 7,350 - 8,036 (75 - 82, 1,067 - 1,165) | 8,100 - 8,800 (83 - 90, 1,175 - 1,276) | ||
| Hydraulic fluid control | Dropping in response to increased engine revolutions | |||||
| Hydraulic fluid | l (US qt, Imp qt)/min | 1,000 rpm: 7 (7.4, 6.2) 3,000 rpm: 5 (5.3, 4.4) |
7.5 (7.9, 6.6) | |||
| Range of revolution | rpm | 700 - 9,000 | ||||
| Revolving direction | Clockwise | |||||
| Working fluid (Power steering system) | Name | ATF DEXRON III | ||||
| Capacity | l (US qt, Imp qt) | Oil tank | 0.3 (0.3, 0.3) | |||
| Total | 0.7 (0.7, 0.6) | |||||
| Steering wheel | Free play | mm (in) | 17 (0.67) | |||
| Turning angle | Inner wheel | WRX, OUTBACK, RS, RS sport package | 34.5°+/-1.5° | |||
| STi | 32.9°+/-1.5° | |||||
| Outer wheel | WRX, OUTBACK, RS, RS sport package | 30.3°+/-1.5° | ||||
| STi | 28.5°+/-1.5° | |||||
| Steering shaft | Clearance between steering wheel and column cover | mm (in) | 4.0 (0.16) | |||
| Steering gearbox (Power steering system) | Sliding resistance | N (kgf, lb) | 400 (41, 90) or less | |||
| Rack shaft play in radial direction | Right-turn steering | mm (in) | 0.19 (0.0075) or less | |||
| Left-turn steering | mm (in) | Horizontal movement 0.15 (0.0059) or less Vertical movement 0.3 (0.012) or less |
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| Input shaft play | In radial direction | mm (in) | 0.18 (0.0071) or less | |||
| In axial direction | mm (in) | 0.5 (0.020) or less | ||||
| Turning resistance | N (kgf, lb) | Maximum allowable value Less than 10.5 (1.1, 2.4) Difference between right and left sliding resistance Less than 20% |
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| Oil pump (Power steering system) | Pulley shaft | Radial play | mm (in) | 0.4 (0.016) or less | ||
| Axial play | mm (in) | 0.9 (0.035) or less | ||||
| Pulley | Ditch deflection | mm (in) | 1.0 (0.039) or less | |||
| Resistance to rotation | N (kgf, lb) | 9.22 (0.94, 2.07) or less | ||||
| Regular pressure (Unloaded) | kPa (kg/cm2 , psi) | 981 (10, 142) or less | ||||
| Steering wheel effort (Power steering system) | At standstill with engine idling on a concrete road | N (kgf, lb) | 31.4 (3.2, 7.1) or less | |||
| At standstill with engine stalled on a concrete road | N (kgf, lb) | 294.2 (30, 66.2) or less | ||||
POWER STEERING FLUID SPECIFICATIONS
| Recommended power steering fluid | Manufacturer |
|---|---|
| ATF DEXRON III | B.P. |
| CALTEX | |
| CASTROL | |
| MOBIL | |
| SHELL | |
| TEXACO |
CAUTION:
The table shown in DIAGNOSIS PROCEDURE , lists various clearances that must be correctly adjusted to ensure the normal vehicle driving without interfering noise, or any other faults.
DIAGNOSIS PROCEDURE
| Location (1) | Minimum allowance | ||
|---|---|---|---|
| (1) Crossmember - Pipe | 5 mm (0.20 in) | ||
| (2) DOJ - Shaft or joint | 14 mm (0.55 in) | ||
| (3) DOJ - Valve housing | 11 mm (0.43 in) | ||
| (4) Pipe - Pipe | 2 mm (0.08 in) | ||
| (5) Stabilizer - Pipe | 5 mm (0.20 in) | ||
| (6) Exhaust pipe - Pipe | 11 mm (0.43 in) | ||
| (7) Exhaust pipe - Gearbox bolt | 15 mm (0.59 in) | ||
| (8) Side frame - Hose A and B | 10 mm (0.39 in) | ||
| (9) Cruise control pump - Hose A and B | 15 mm (0.59 in) | ||
| (10) Pipe portion of hose A - Pipe portion of hose B | 1.5 mm (0.059 in) | ||
| (11) AT cooling hose - Joint | 20 mm (0.79 in) | ||
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