Inspection

INSPECTION AND ADJUSTMENT BEFORE DISASSEMBLY

Fix a brass plate or aluminum plate for protection to the jaws of a vise and mount the gear box(A) in a vise(B).

CAUTION:
When mounting the gear box in a vise, let the installation section of it be fixed to the jaws. If other section is fixed the gear box may be damaged.





TOTAL PINION PRELOAD
1. Rotate the pinion gear for approximately 4 to 6 seconds for one rotation to measure the total pinion preload.

Standard value Total pinion preload : 0.6 - 1.3 Nm (0.06 - 0.13 kgf-m, 0.4 - 1.0 lb-ft)

NOTE:
Measure the pinion preload through the entire stroke of the rack.




2. If the measured value is out of specifications, first adjust the yoke plug(A), then recheck the total pinion preload.
3. If you adjust the yoke plug but do not obtain the total pinion preload, check or replace the yoke plug components.

TIE ROD SWING RESISTANCE
1. Move the tie rod several times by hand.
2. Measure the tie rod(A) swing resistance with a spring scale(B).

Standard value Total rod swing resistance : 2 - 5 Nm (0.2 - 0.5 kgf-m, 1.4 - 3.6 lb-ft)




3. If the measured value exceeds the standard value, replace the tie rod assembly.

CAUTION:
Even if the measured value is below the standard value, the tie rod that swings smoothly without excessive play may be used. If the measured value is below 0.044 Nm (0.44kg-cm, 0.03 lb-ft) replace the tie rod.

BELLOWS INSPECTION
1. Inspect the bellows for damage or deterioration.
2. Make sure the bellows are secured in the correct position.
3. If the bellows are defective, replace them with new ones.

INSPECTION

1. Rack
(1) Check for rack tooth face damage or wear
(2) Check for oil seal contact surface damage
(3) Check for rack bending or twisting
(4) Check for oil seal ring damage or wear
(5) Check for oil seal damage or wear




2. Pinion valve
(1) Check for pinion gear tooth face damage or wear
(2) Check for oil seal contact surface damage
(3) Check for seal ring damage or wear
(4) Check for oil seal damage or wear




3. Bearing
(1) Check for seizure or abnormal noise during a bearing rotation
(2) Check for excessive play
(3) Check for missing needle bearing rollers
4. Others
(1) Check for damage of the rack housing cylinder bore
(2) Check for boot damage, cracking or aging