Land Rover Defender 90 110 Workshop Book 4 Rover

STEERING 1571 
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81. Fit the  retainer  ring to the groove  with one end of 
the  ring  positioned  12 
mm (0.5 in)  approximately 
from the extractor  hole. 
.. ./.>, . _. .... 
Adjusting  the sector  shaft 
82. Set the  worm on centre  by rotating  the input  shaft 
half  the total  number 
of turns from either  lock. 
RR945M 
83. Rotate  the sector  shaft  adjusting  screw  anti- 
clockwise  to  obtain backlash  between the input 
shaft  and the sector shaft. 
84....

57 
NOTE: Do not  maintain  this pressure for more  than 
30 seconds  in any  one minute to avoid  overheating 
the 
fluid and possibly damaging  the seals. 
STEERING 
97.  Road  test the vehicle. 
KEY TO ADWEST LIGHTWEIGHT POWER STEERING BOX 
1. Housing. 
2. Housing  bushes. 
3.  Seal. 
4.  Back
-up washer. 
5. Back-up seal. 
6.  Circlip. 
7. Seal. 
8. Drop-arm. 
9.  Tab  washer. 
10. Sector  shaft nut. 
11. Sector  shaft and follower  assembly. 
12.  Seal. 
13.  Bush. 
14.  Cover  plate. 
15.  Self...

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I- 
T 
29  

171 STEERING 
POWER STEERING  SYSTEM - Adwest Lightweight 
box 
Bleed 
1. Fill thc steering  fluid reservoir  to the  mark  on the 
side 
of the  reservoir  with  one of the recommended 
fluids. 
2. Start  and run the engine  until it attains  normal 
operating  temperature. 
3. Check and correct  the reservoir  fluid level. 
NOTE: During  the carrying  out of items 4, 5 and 6, 
ensure that the steering  reservoir is kept full. Do not 
increase  the engine  speed 
or move the steering  wheel. 
4. Run the...

.. . 
STEERING 157 
11. If the  pressures  recorded during the  foregoing test 
are  outside  the specified  range, or pressure 
imbalance 
is recorded,  a fault  exists  in the  system. 
To determine if the  fault is in the  steering  box or 
the  pump,  close the  adaptor  tap  for a period  not 
exceeding  five seconds. 
12. If the gauge  fails to register  the specified  pressures, 
the  pump 
is inefficient  and the  pump  relief valve 
should  be examined  and renewed  as necessary. 
13.  Repeat...

STEERING 
GEMMER POWER STEERING BOX OVERHAUL 
Special  tools: 
Drop  arm puller 
MS 252 A 
End cover  wrench  adaptor LST123 
Input shaft oil seal  installer LST124 
Sector  shaft oil seal  installer LST125 
Valve  seal installer  and valve  ring compressor LST126 
Preload  setting tool R01016 
Dismantle 
1. Remove  the steering  box from  the vehicle. 
2. Bend  back the  locking  tab and  remove  the drop 
arm  nut. Using  special 
tool MS 252 A or a suitable 
alternative,  withdraw the drop  arm from...

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STEERING 157 
7. Restrain  the  sector shaft adjuster  with a 6 mm 
8. Remove  the six bolts  securing  the  sector shaft 
hexagonal 
key and remove  the locknut. 
cover. 
ST1816M 
9. Hold the  sector  shaft cover  and turn  the adjuster 
and  screw  clockwise  until 
the cover can be 
removed. 
10. Lift-out the  sector shaft. 
. ,.I.. . .. . 
ST 
11. Remove the  rack and piston  assembly  and collect 
the  rack  adjuster thrust  pad. 
ST 1819M...

57 
15. Withdraw the  input  shaft,  worm and valve 
assembly. 
STEERING 
15 
ST1822M 
16. Release  the circlip  and remove  the  steel  washer 
17. Remove the wire  circlip, anti-extrusion  washer and 
and 
oil seal from 
the sector  shaft housing. 
Qil seal from the input  shaft housing. 
Sector  shaft assembly 
5. Check  that no side  play  or wear  exists  in the roller. 
6. Check  the condition  of the  adjuster and  its retainer 
7. The  axial  clearance of the adjuster  should not 
8. Examine  the...

STEERING 157 I 
Valve and worm  assembly 
NOTE: If the  inner  ball race  is faulty  and unfit for 
further  service it cannot  be renewed  and a new  valve 
and  worm  assembly  must be obtained  and fitted.  Should 
this  be the  case,  the following  checks of the  valve  and 
worm  can be  ignored. 
10. Examine  the  valve  rings  which  must be free  from 
cuts,  scratches  and scores. 
Also, the rings  should 
be  a loose  fit 
in the grooves. 
11. If  any  ring  is unsatisfactory,  all the  rings...

1571 STEERING 
17. Examine the bearing  surfaces of the valve  assembly 
for  wear  and scores. 
18. Examine  the worm track for  wear and pitting. 
19. Check  that  the  end-float between  the locator  and 
valve  sleeve  does not exceed 
0,12 mm (0.005 in). 
20.  Rotary  movement  between  the  components at the 
trim  pin 
is permissible. 
21. Check  that no free movement  exists on the  torsion 
bar  assembly  pin between 
the input  shaft and 
worm. 
29. Remove  the plastic  seal and the ‘0’ ring...