Range Rover P38
12
ENGINE
NEW RANGE ROVER
46
REPAIR
4. Progressively slacken then remove and discard
10 bolts securing reinforcing plate,
5. Remove reinforcing plate.
6. Carefully rotate crankshaft to gain access to
connecting rod bolts.
7. Ensure that connecting rods and big-end bearing
caps are suitably identified to each other.
8. Remove big-end bearing cap bolts.
NOTE: Do not discard bolts at this stage.
9. Remove big-end bearing caps, remove and
discard big-end bearing shells.
CAUTION: Dowel located, do not tap
bearing caps sideways.
10. Remove and discard big-end bearing shells from
connecting rods.
CAUTION: Take care when carrying out
above operation that piston does not
contact valves. Keep big-end bearing caps
and bolts in their fitted order.
Inspection
11. Measure and record crankshaft big-end journal
diameter, take 4 measurements at 90
°
intervals.
NOTE: There are 3 sizes of crankshaft
big-end journals, Standard, Size 1 and Size
2. Crankshafts with either Standard or Size
1 journals may be ground to the next undersize
and the appropriate oversize big-end bearing
shells fitted.
Standard = 44.975 to 45.00 mm (1.770 to 1.771 in)
Size 1 - 0.25 (0.01 in) undersize = 44.725 to 44.75
mm (1.761 to 1.762 in)
Size 2 - 0.50 mm (0.02 in) undersize = 44.475 to
44.50 mm (1.751 to 1.752 in)
12. Repeat above procedures for remaining big-end
journals.
