Land Rover Defender 90 110 Workshop Book 2 Rover

2.50 LITRE DIESEL ENGINE 1121 
, : ... -4 :: 42. Alternatively,  insert a strip of cellophane  between .I . .,..., ..

1121 2.50 LITRE DIESEL ENGINE 
52. Continue  the operation until a continuous  matt 
grey  band  round the valve  face is obtained. 
To 
check  that the lapping  operation  is successful,  wipe 
off  the  valve  paste  from the valvc  and seat  and 
make a scries of pencil  lines across the  valvc face. 
Insert  the valve 
into the  guide  and  while  pressing 
the  valve  onto 
the seat rcvolve the valve  a quarter 
turn  a few  times. 
If all the  pencil lincs are  cut 
through  no further  lapping  is...

2.50 LITRE DIESEL ENGINE 
66. Using  new  spacers and springs,  assemble  the 
rockers  and  brackets  to the  shaft  as  illustrated, 
ensuring that 
the rockers  move freely  on thc shaft. 
Note 
th.jt double spacers  are fitted each  side of the 
centre pedestal. 
67. 
Fit the  tappet  adjustment  screws and lock  nuts to 
the  rockers. 
68.  Invert  the rocker  assembly  and  locate 
it on the 
rocker cover to prevent it falling apart. Place  the 
reconditioncd cylinder  head  and  rocker assembly...

2.50 LITRE DIESEL ENGINE 
8. Secure the flywheel in a soft  jawed  vice and cover it 
with  a cloth to protect  one from  personal  injury. 
Place  a cold  chisel  above the  drilled  hole  and strike 
it sharply to  split the ring  gear. 
ST701 M \‘ 
9. Heat the new ring  gear  uniformally  to  between 
225°C and 250°C but do not  exceed  the  higher 
figure. 
10. Place thc flywheel,  clutch face down, on a flat 
surface  and  locate  the  heated flywheel 
with the 
square  cdge of teeth  downward...

2.50 LITRE DIESEL ENGINE 12 
. . -- -. 1.. . -.j 5. Remove the oil 
sealing  washer.  Withdraw  the relief valve  spring, 
plunger  and ball.  pressure 
relief  valve  plug  and .*> Y.. . , 
NOTE: Later pumps  have ten toothed  gears and no 
relief valve ball. 
.-, 
I:- 
Overhaul  the oil pump 
6. Examine  the gears for wear, scores  and pits.  If the 
gears  appear  serviceable  check  for end
-float as 
fo 1 I0 ws : 
7. Clean the pump body  and  assemble the gears. 
Place  a straight  edge across 
[he...

121 2.50 LITRE DIESEL ENGINE 
REMOVE AND OVERHAUL OIL PUMF - Later Type Dismantle oil pump 
I. Remove the sump. 
2. Bend back the lock  washers  and  remove  the  two 
bolts  securing 
the oil pump to the  crankcase. 
Withdraw  the  oil pump  complete 
with strainer and 
oil  pump  drive 
shaft. 
3. Bend  back the lock washer  and  release the nut 
securing  the  strainer to the oil pump body and 
remove the strainer  and scaling ring. 
4. Remove four bolts and  washers  and lift off the  oil 
pump...

2.50 LITRE DIESEL ENGINE 1121 
Assemble the oil pump 
10. Fit the  idler  gear to the spindle. 
11. Fit thc driven  gear with  plain  part of the  bore 
uppermost. 
ST1637M 
12. Smear  the .joint face of the body with jointing 
compound  and 
fit the  cover  over the  dowels  and 
sccurc with the four bolts  and spring washers. 
13. Hold relief  valve bore vertically  and  insert  the 
plunger 
with the  solid cnd first. Fit the spring, 
sealing washer  and plug. 
14. Fit the oil strainer  sealing ring...

)121 2.50 LITRE DIESEL ENGINE 
9. Withdraw the crankshaft pulley  using  complete KEY TO TIMING GEAR  AND COVER ASSEMBLY 
tool 18G1464/2 and button 18G1464/5. 1. Fan  blades 
1 ST1457M 
Remove  distributor  pump (D.P.S.  Pump) 
10. Remove  the high and low pressure  pipes  from  the - D.P.S.  pump  and injectors. (If not already 
removed)  and cover,  not plug, the ports. 
11. Disconnect  the pump  operating link from the lever 
on the bracket. (If not already removed). 
12. Remove  the nut and bolt...

65  

2.50 LITRE DIESEL ENGINE 
3. Lift out the tappet  rollers and  mark the side facing 
the front  of the engine  for possible  reassembly. 
4. Lift out the guides and retain with their 
respective  slides  and rollcrs.  If the  guides are 
difficult to remove  use special tool 530101A. 
5. Carcfully examine  all parts  and discard  any that  are 
worn  or damaged. 
Examine 
4. Inspect  the  components  for wear  and damage  and 
renew as  necessary. 
5. To check thc rotor to body clearance, fit the  rotor...