GENERAL SPECIFICATIONS
| Item | Specification | |
|---|---|---|
| Power steering gear box | Type | Rack and pinion |
| Stroke ratio (Rack stroke/Steering wheel maximum turning radius) mm/rev (in/rev) | 65.97 (2.59) | |
| Oil pump | Type | Vane type |
| Displacement cm 3 /rev (cu in/rev) | 9.0 (0.55) | |
| Relief set pressure MPa (psi) | 8.55 (1.197) | |
GENERAL SPECIFICATIONS CHART
SERVICE SPECIFICATIONS
| Item | Standard value | Limit | |
|---|---|---|---|
| Steering wheel free play mm (inch) | With engine running | 30 (1.2) | |
| With engine stopped | 16.5 (0.6) or less | ||
| Steering angle | Inside wheel | 33°10' ± 1°30' | |
| Outside wheel (reference value) | 28°10' | ||
| Toe-in mm (in) | 0 ± 2 (0 ± 0.07) | ||
| Tie rod end ball joint breakaway torque N.m (in-lb) | 2.9 (26) or less | ||
| Engine idle speed r/min | 700 ± 50 | ||
| Stationary steering effort N (lb) [Fluctuation allowance N (lb)] | 32 (7.2) or less [5.9 (1.33) or less] | ||
| Oil pump pressure MPa (psi | Oil pump relief pressure | 8.1 - 8.8 (1,174 - 1,276) | |
| Pressure under no-load conditions | 1.0 (144) | ||
| Steering gear retention hydraulic pressure | 8.1 - 8.8 (1,174 - 1,276) | ||
| Steering gear total pinion torque N.m (in-lb) [Change in torque N.m (in-lb)] | 0.6 - 2.0 (5.2 - 17.6) [0.4 (3.5) or less] | ||
| Band crimped width mm (in) | 2.4 - 2.8 (0.09 - 0.11) | ||
SERVICE SPECIFICATIONS CHART
TIE ROD END BALL JOINT BREAKAWAY TORQUE CHECK
Required Special Tools
- MB990326: Preload Socket
- MB991897 or MB992011: Ball Joint Remover
| CAUTION | Loosen the self-locking nut (tie-rod end connection) from the ball joint, but do not remove here. Use the special tool. To prevent the special tool from dropping off, suspend it with a rope. |
Scheme 1
Scheme 2
Scheme 3
- Install special tool MB991897 or MB992011 as shown in the figure.
- Turn the bolt and knob to make the special tool jaws parallel, then hand-tighten the bolt. After tightening, check that the jaws are still parallel. NOTE: To adjust the special tool jaws to be parallel, set the orientation of the knob as shown in the figure.
- Unscrew the bolt to disconnect the ball joint.
- Move the ball joint stud several times and install the nut on the stud. Using the special tool MB990326, measure the ball joint breakaway torque. Standard value: 2.9 N.m (26 in-lb) or less
- If the breakaway torque exceeds the standard value, replace the tie rod end.
- If the breakaway torque is under the standard value, check the ball joint for end play or ratcheting. If no end play or ratcheting, the ball joint can be re-used. CAUTION: Always use a new ball joint nut as it is a self-locking nut.
- Install the tie rod end to the knuckle, then tighten a new self-locking nut to the specified torque. Tightening torque: 40 ± 8 N.m (30 ± 5 ft-lb)
PINION TOTAL ROTATION TORQUE CHECK
| CAUTION | Secure the steering gear and linkage to the special mounting point. Fixing the steering gear and linkage to another point could deform or damage the gear housing. |
Scheme 4
- Using the special tool preload socket (MB991006) to rotate the pinion at a rate of one turn per 4 to 6 seconds, and then measure the pinion total rotation torque. Standard value: Total rotation torque: 0.6 - 1.6 N.m (2.6 - 7.0 in-lb) Torque fluctuation: 0.4 N.m (1.76 in-lb) or less NOTE: During measurement, remove the bellows from the gear housing. Rotate the pinion by 180° in left and right directions from the neutral position, and measure the pinion total rotation torque.
- If the measurement value is outside the standard value, replace the gear housing (Refer to «DISASSEMBLY AND REASSEMBLY»(ref-289393-S13717458432008063000000) ).
Scheme 5
- Swing the tie-rod ten times strongly.
- Measure the oscillating resistance (oscillating torque) using a spring scale as shown in the figure with the tie-rod end facing downward. Standard value: 5 - 18 N.m (22 - 80 in-lb) {1.5 - 4.9 N.m (13.2 - 43.4 in-lb) }
- If the measurement is greater than the standard value, replace the gear housing (Refer to «DISASSEMBLY AND REASSEMBLY»(ref-289393-S13717458432008063000000) ).
- If the measurement value is below the standard value, check the ball joint for looseness or scraping feeling. If the ball joint swings smoothly, it is judged to be usable.
Scheme 6
Scheme 7
See also:
• SERVICE PRECAUTIONS