Land Rover Defender 90 110 Workshop 1984 Rover Manual

*.-> ,.. ,,.. ... .* c.;i:,.,] ,. . ... .. - ... . ..,.:e 
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...

STEERING 
34. Drive-in a new  bearing, up to the  shoulder,  with 
the  bearing  number  and  chamfered ends of the 
rollers trailing. 
35. Fit a  new ‘0’ ring seal to the cover. 
36. Check  that  the  cover  bearing  lubrication  passage 
and  bleed  nipple 
hole is clear. 
57 
. :.I..: .. . ... ... .. , 
ST 1 
2. Fit the  sector shaft  upper needle  bearings, number 
outwards, up  to the  shoulder. 
ST 
Fitting the valve  and worm assembly (input shaft) 
3. Fit the  input  shaft to the  steering  box...

57 
S7 
STEERING 
6. Secure preload  setting tool R01016 to the  input 
shaft  with the  grub  screw. Wind  string  round the 
tool  and tie a spring  balance  to  the free end 
of the 
string.  Whilst turning  the  input shaft cover 
clockwise,  pull the spring  balance  until  a  constant 
preload  reading 
of 0,69 Nm is achieved. 
6 / 
Fitting sector shaft and piston-rack assembly 
7. Fit the  sector  shaft to the housing  and  engage it 
with the input  shaft worm  in the  straight  ahead 
position....

~ . .. .. . .. ... 
... .. ..,, .- /. . 
STEERING 1571 
14. 
If the  difference  between  the two  points  at which 
the  backlash  is taken
-up  or disappears  is greater 
than 
90 (94 of a  turn)  it will  be necessary  to change 
the  shimming  behind the input  shaft inner  bearing 
cup. 
15. If  the  shimming  requires adjustment,  add a shim  on 
right
-hand  drive  steering  boxes if backlash starts 
too  quickly  on clockwise  rotation. Should backlash 
start 
too quickly  for anti-clockwise...

1571 STEERING 
26. Lubricate  and fit an ‘0’ ring  seal to the piston-rack 
cover. 
27. 
Fit the  piston  cover  to  steering  box.  Align the 
retaining  ring hole  in the  cover  with the cut
-out  in 
steering  box housing  and  insert  hooked  end 
of the 
retaining  ring in the 
hole. Using  special  tool 
LST123, rotate the cover  anti-clockwise  to feed  the 
ring  into  the  groove  until the ring  is fully  seated. 
This 
is a reversal of instruction 3 of the  dismantling 
procedure. 
. 
ST1956M...

STEERING 
n 
57 
/ 
ST1947M 
Fitting sector shaft oil seal 
40. Lubricate  the oil seal  and seal-saver LST12.5, and 
slide 
the seal  over  the tool,  lip side leading. 
fully home into  the housing. 
41. Using  the seal-driver  part of the tool,  push thc seal 37. Withdraw  the conical  seal-saver  and  place  the 
lower  part 
of the tool  with  the seal,  lip side 
downwards,  over the input  shaft. 
38. Place the seal-driver  part of the tool on top of the 
seal  and drive 
it fully home. 
ST1948M...

STEERING 
43. Fit the  drop  arm,  tab washer  and nut.  Tighten  the 
nut  to 
170 to 180 Nm (125 to 132 Ibs/ft). Fold  one 
side 
of the  tab  washer  over the drop  arm and the 
other  over a flat  against  the nut. 
44. Refit  the steering box to the  vehicle  and bleed  the 
hydraulic  system. 
NOTE: Bleeding and test of the power steering box 
is the same  as that for the Adwest Lightweight box. 
42