Land Rover Defender 90 110 Workshop Book 2 Rover

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2.25 LITRE PETROL AND DIESEL  CYLINDER  HEAD 12 
-:. .,. 
. I. 
50. Turn the cylinder head over so the combustion 
chambers  face downwards.  Since the 
inlet and 
exhaust  valve guides  are dimensionally  different 
it 
is important  that the correct  guides are fitted  to 
the  appropriate  ports. 
51. Lubricate new guides with engine oil and using 
special  drift 600959  for the  exhaust  and 601508  for 
the 
irrlet valve...

(1211 2.25 LITRE PETROL AND DIESEL  CYLINDER  HEAD 
NOTE: MS 621 is a 45 and 15 cutter and MS 627 
is 30 only. 
A -Petrol engine - inlet valve seat 30 + W 
13 - Diesel engine - inlet valve  seat 45 + h 
exhaust  valve seat 45 + 9 
exhaust  valve seat 45 + % 
See illustrations  following instruction 68. 
59. Ensure that the cutter  blades  are correctly  fitted 
to  the 
cutter head with the  angled  end of the blade 
downwards  facing the work,  as illustrated.  Check 
that  the cutter  blades  are...

2.25 LITRE PETROL AND DIESEL CYLINDER HEAD 112 I . 
- Reface valve faces .; c. 
68. Valves  that are satisfactory  for further  service can 
be 
rcfaced. This  operation  should be carried out 
using  a valve  grinding  machine.  Only the 
minimum  of material  should  bc rcmoved from the 
valve  face 
to avoid thinning  of the  valve  edge. The 
valve  is refaced  correctly  when all pits  are 
removed  and the face concentric  with the stem. 
Valve  face angles: 
A. Petrol  engine 
Inlet valve  face -...

1121 2.25 LITRE PETROL AND DIESEL  CYLINDER HEAD 
76. Fit the double  valve spring  and retainer  assembly 
to  each  valve in turn  and using  valve  spring 
compressor, 
18G106A with  adaptor 18G106A/10 
secure  the assembly  with the split collcts. 
74 
ST6 75 
ST669M 79 Examine  the rocker  shaft for wear  and  discard if 
ST 
~76 
80 
OVERHAUL  ROCKER SHAFT ASSEMBLY 
Most of thc rocker  shaft  assembly  components are not 
interchangeable  between  the petrol  and  diesel engines 
although  the...

2.25 LITRE PETROL AND DIESEL  CYLINDER  HEAD 1121 
,,: :.:;,,.+ Assemble rocker shaft assembly >::. ;:.?a? .. _.-. ,, ,. .... + .q, : _I 83. Check  that the oil-ways in the rocker  shaft  are 
clear  and 
fit number  two rocker  shaft  bracket to 
the shaft and  retain  with the locating  screw  and 
washer.  Note that 
the locating  screw on petrol 
engines also  secures the splash  plate. 
84. Using  new  spaccrs and  springs,  assemble  the 
rockers  and brackets  to the  shaft  as  illustrated,...

1121 2.25 LITRE PETROL  AND DIESEL  CYLINDER  HEAD 
92. Adjust the tappet clearances for  petrol and diesel 
engines,  inlet and exhaust 
to 0,25 mm (0.010 in) 
Fit the  cylinder  head 
as 
follows: Using a  feeler  gauge adjust  the 87. Cleaii the cylinder head  and cylinder  block mating 
clearance by slackening  the locknut  and  turning 
faces 
and 
fit a new  gasket,  dry, without  grease or 
the  tappet  adjusting  scrcw clockwise to reduce sealing compound.  The gasket will have either 
clearance...

2.25 LITRE PETROL AND DIESEL CYLINDER HEAD 
_- 94. Using  a new  gasket fit the rocker  cover and  secure 
with the rubbers, cups and dome  nuts.  Tighten to 
the correct torque figure. Do not over-tighten. 
A. Petrol. B. Diesel 
- :,. 
ST671 M 
ST672M 
107.  Refit or reconnect  the items  disturbed for access 
to the cylinder  head. 
108. 
Refill the  cooling  system  when engine  is refitted 
to  vehicle. 
95. 
Fit the  inlet  and exhaust  manifolds  complete with 
carburetter (petrol  engine). 
Sec...

2.5 LITRE PETROL ENGINE 
2.5 LITRE PETROL ENGINE 
SUPPLEMENT TO THE 2.25 LITRE  PETROL 
ENGINE  OVERHAUL PROCEDURES 
This Supplement  should be used  in conjunction  with the 2.25 litre petrol  engine  overhaul  procedures. 
Details 
of the differences  between the 2.25 and 2.5 litre engines are listed  below. Some of the  new  features 
were,  however,  introduced  on later 
2.25 pctrol  engines. I 
0 Capacity  increased to 2495 cc by lengthening  the 0 
piston stroke  from 89 mm to 97 mm. 
0 
0...

2.5 LITRE PETROL  ENGINE 112 
...-,.. _..._. ,+ . : : REMOVE  AND OVERHAUL  OIL PUMP Dismantle oil pump , :i:: ...,... :i i ,.. !. _, . -., , 
1. 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 sealing ring. 
4. Remove  four...

)121 2.5 LITRE PETROL ENGINE 
Assemble the oil pump 
10. Fit the  idler  gear to the  spindle. 
11. Fit  the  driven  gear with plain  part of the bore 
uppermost. 
See illustration  after instruction 9. 
ST1637M 
12. Smear thc joint  face of the body  with jointing 
compound  and fit the  cover  over the dowels  and 
secure 
witli the lour bolts and  spring  washers. 
13.  Hold  relief valve  bore vertically  and insert 
the 
plunger  with the solid  end first. Fit the spring, 
sealing  washer  and...