Piston, Engine

Piston And Connecting Rods

Piston Rings
- Offset gaps by 120 °

Piston Ring Gap






Piston Ring Side Clearance






Piston

Maximum deviation from nominal diameter: 0.04 mm (0.0016 in.)

Piston dimensions
















Bearing Cap 30 Nm (22ft lb) plus 1/4- turn (90 °)

Radial Clearance:
tighten to 30 Nm (22 ft lb) but NOT additional 1/4- turn (90 °)

Pressure Relief Valve
Tightening Torque: 27 Nm (20 ft lb)
Opening Pressure: 2.5 - 3.2 bar (36- 46 psi)
Not Applicable 08.95 ->

Bearing Shell

Axial clearance:
New: 0.05 - 0.31 mm (0.0020 - 0.0122 in.)
Wear limit: 0.37 mm (0.0146 in.)
Radial Clearance:
New: 0.01 - 0.06 mm (0.0004- 0.0024)
Wear limit: 0.12 mm (0.0047 in.)

Cylinder Bore






Maximum deviation from nominal diameter:
0.08 mm (0.0015 in.)

Piston And Cylinder Dimensions 07.95 1)






1) Flat top Piston with center combustion chamber recess


Piston And Cylinder Dimensions 08.95-07.96 1)

�6�:

1) Stepped piston crown with valve relief, installed in some m.y. 1996 vehicles.

2) Dimension stamped on piston crown. Add 0.015 mm (0.0006 in.) for actual diameter including phosphate layer.

Piston And Cylinder Dimensions 08.95 -> 1)






1) Flat top Piston with center combustion chamber recess