Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1987

STEERING  3B-27

MANUAL STEERING UNIT

  DISASSEMBLY

Disassembly Steps

1. Lock nut

! 2. Side cover

3. Gasket
4. Adjusting screw
5. Adjusting shim
6. Needle bearing

! 7. Sector shaft
! 8. Lock nut

! 9. End cover

10. Oil seal
11. O-ring

!12. Ball nut and worm shaft

13. Bearing
14. Bearing
15. Oil seal
16. Gear box

3B-28  STEERING

Important Operations

2. Side Cover

(1) Turn  the  adjusting  screw  counter-clockwise  slightly,  then

remove the side cover fixing bolt.

(2) Turn the adjusting screw clockwise with the side cover held

from turning.

7. Sector Shaft
Hold the sector shaft in straight-ahead position when removing
it from the gear box.  Do not drive the sector shaft off the gear
box with a hammer or other impact tools.

8. Lock Nut
Lock Nut Wrench : 5-8840-2006-0

(J-29753)

9. End Cover

(1) End Cover Remover : 5-8840-2007-0

(J-7624)

STEERING  3B-29

(2) When removing, take care so as not to damage the oil seal.

Taping the splines will provide some protection.

12.Ball-Nut and Worm Shaft
Always keep ball-nut assembly in a horizontal position.  Do not
hold it vertically, or ball-nut will slide out.

3B-30  STEERING

  INSPECTION AND REPAIR

Make necessary correction or parts replacement if wear, damage or any other abnormal conditions are found
through inspection.

• Bearing

• Oil seal, bushing

• Ball-nut and worm shaft

• Sector shaft

• Gear box

Visual Check

Inspect the following parts for wear, damage or other abnormal
conditions.

Ball-Nut Rotation

Hold the worm shaft vertically and check that the ball-nut
lowers with a smooth turning motion.  If the lowering of the ball-
nut by its own weight is not smooth, check the worm shaft for
bending and the ball-groove for burrs, dents, and foreign
matter.
Note :
When testing the ball-nut assembly, do not let it travel all
the way to the end of worm shaft, or damage to the ball
tubes will result.

Sector Shaft Outside Diameter

mm(in)

Standard

Limit

A

28.6 (1.13)

28.3 (1.12)

B

31.8 (1.25)

31.5 (1.24)