Range Rover P38
BMW DIESEL
47
REPAIR
Check big-end bearing clearances
NOTE: Big-end bearing shells are available
in 3 sizes - Standard, 0.25 (0.01 in) and
0.50 (0.02 in) oversize and are colour
coded RED or BLUE. Additionally, the connecting
rod bearing shell is of the ’sputter’ type and can
be identified by a letter S or a series of XXX on the
outside of the shell. Sputter bearings must be
fitted to the connecting rod.
13. Fit a new RED colour coded big-end bearing
shell of the appropriate size in connecting rod.
CAUTION: Ensure bearing shell is of the
’sputter’ type.
14. Fit a new BLUE colour coded big-end bearing
shell of the appropriate size in the big-end
bearing cap.
CAUTION: Do not fit a ’sputter’ bearing to
bearing cap.
15. Place a strip of Plastigage across crankshaft
big-end journal.
16. Pull connecting rod on to journal.
17. Fit big-end bearing cap ensuring reference
marks on connecting rod and cap are aligned.
18. Fit original big-end bearing cap bolts and tighten
to:
Stage 1 -
5 Nm (4 lbf.ft)
Stage 2 -
20 Nm (15 lbf.ft)
Stage 3 - Use angular torque wrench and tighten
further 70
°
CAUTION: Do not rotate crankshaft.
19. Remove big-end bearing cap.
20. Using scale provided, measure width of
Plastigage on bearing journal and compare with
bearing clearance:
Big-end bearing clearance = 0.010 to 0.055 mm
(0.0004 to 0.002 in)
21. If correct clearance cannot be obtained with
bearing shells available, crankshaft journals
must be ground to next undersize and the
appropriate oversize big-end bearing shells
fitted.