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ENGINE AND PERIPHERALS
Specifications
10
10-27
CON RODS
The small end has a bush.
N.B.: the small end bushes cannot be replaced or re-
drilled.
WARNING: do not use a sharp point to mark the
bearing caps in relation to their con rods as this could
start a crack in the rods. Use an indelible marker pen.
Normally aspirated engine
The big end and the half bearing are pierced to allow
an oil jet to pass through.
Turbo engine
The con rods do not have a hole for an oil jet. The
upper and lower bearing shells are not pierced.
Refitting and assembling con rods and pistons
Direction of fitting:
rotochamber on the injector side or the side opposite
the oil filter.
Check that the gudgeon pins rotate properly in the new
piston and the con rod.
Oil the gudgeon pin.
Ensure that the piston and con rod are fitted the right
way around (follow the arrows):
Engines 852 J8S all types except turbo
Turbo engine
in mm
Lateral play in the big end 0.31 to 0.57
Centre-to-centre distance between
big end and small end
155 ± 0.035
Big end diameter 60
+ 0.019
- 0.005
Small end diameter
●
without ring 30
+ 0.021
0
●
with ring 28
+ 0.01
+ 0.003