Volvo Workshop Service and Repair Manuals

Piston: Specifications

Piston Specifications

Standard Diameter:

Piston Marked C ............................................................................................................................................................................  80.980-80.990 mm
Piston Marked D ............................................................................................................................................................................  80.990-81.000 mm
Piston Marked E ............................................................................................................................................................................  81.000-81.010 mm
Piston Marked G ............................................................................................................................................................................  81.017-81.032 mm

Oversize Diameter:

OS1 ................................................................................................................................................................................................  81.177-81.192 mm
OS2 ................................................................................................................................................................................................  81.377-81.392 mm

Weight:

Standard Weight ....................................................................................................................................................................................  345 ± 5 grams
Max. Difference Between Pistons ..................................................................................................................................................................  10 grams

Piston To Cylinder Clearance:

New Piston .............................................................................................................................................................................................  0.01-0.03 mm

Piston Ring Clearance:

Upper Compression Ring ...................................................................................................................................................................  0.050-0.085 mm
Lower Compression Ring ..................................................................................................................................................................  0.030-0.065 mm
Oil Scraper Ring ................................................................................................................................................................................  0.020-0.055 mm

Wrist Pins:

Diameter ..............................................................................................................................................................................  23.000 + 0 or - 0.004 mm