Opel Frontera UBS. Manual - part 951

 

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Opel Frontera UBS. Manual - part 951

 

 

2A – 22 POWER STEERING

UNIT REPAIR

STEERING GEAR

5

These steps are based on the LHD model

6

8

13

1

2

3

4

9

10

11

12

7

Disassembly Steps

1.

Dust cover

2.

Retaining ring

3.

Back up ring

4.

Oil seal

5.

Lock nut

6.

Top cover assembly

7.

O-ring

8.

Sector shaft

9.

Ball-nut and valve housing assembly

10.

O-ring

11.

Seal ring

12.

O-ring

13.

Gear box

Reassembly Steps

13.

Gear box

12.

O-ring

11.

Seal ring

10.

O-ring

9.

Ball-nut and valve housing assembly

8.

Sector shaft

7.

O-ring

6.

Top cover assembly

5.

Lock nut

4.

Oil seal

3.

Back up ring

2.

Retaining ring

1.

Dust cover

440RW004

These steps are based on the LHD model.

POWER STEERING  2A – 23

DISASSEMBLY

CAUTION:
Do not clamp the steering gear assembly in a vise by the
power cylinder housing.

1.

Dust Cover

2.

Retaining Ring

3.

Back up RIng

4.

Oil Seal

1) Clean the faces of the extended stub shaft.

2) Plug the hose fitting on the inlet side.

3) Remove the oil seal by blowing compressed air

through the hole in the outlet side.

5.

Lock Nut
Remove the adjusting screw lock nut and turn the
adjusting screw counterclockwise to remove the
preload between the sector gear and the rack piston,
then remove the top cover bolts.

6.

Top Cover Assembly 
Holding the top cover stationary, turn the adjusting
screw clockwise to raise and free to cover, then
remove the cover.

7. O-ring

8. Sector Shaft
Bring the stub shaft into straight-ahead position. Do
not force the sector shaft off the gear box with a
hammer or other impact tools.

2A – 24 POWER STEERING

9. Ball-nut and Valve Housing Assembly
It is strongly advisable to always keep the ball nut
and valve housing assembly in a horizontal position,
or the rack piston will fall off onto the end of the
worm, causing the rack piston to slip out of the worm
shaft and the balls to fall out.

10. O-ring

11. Seal Ring

12. O-ring

13. Gear Box

INSPECTION AND REPAIR

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

Bearing

Ball-nut and valve housing

Sector shaft

Top cover

Gear box

Needle bearing

Dust seal

Seal ring

Gasket

Ball-nut Rotation

Hold the ball nut and valve housing assembly vertically
and see if the ball-nut lower by turning smoothly. If the
ball-nut does not lower smoothly, check the worm shaft
for bending and foreign matter.

NOTE:
When testing the ball nut and valve housing assembly, do
not let it travel all the way to the end of worm shaft, or
damage to the ball tubes will result.

Check sector shaft outside diameter.

Sector Shaft Outside Diameter

mm(in)

Standard

Limit

32.0 (1.260)

31.7 (1.248)

POWER STEERING  2A – 25

Seal Ring Setting

Note the setting direction. Always install a new part.

Apply a thin coat of power steering fluid to lip of each
part.

Dust Seal Setting

Note the setting direction. Always install a new part.

Apply a thin coat of power steering fluid to lip of each
part.

Gasket Setting

Note the setting direction. Always install a new part.

Apply a thin coat of power steering fluid to lip of each
part.

 

 

 

 

 

 

 

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