022-4 Technical data
Pistondiameter
This is measured at right angles to the piston
boss, 13 mm (0.52 in) from the bottom of the
skirt.
Classificationof pistonsand cylinder
bores
The piston classification code is stamped on the
piston crown. The codes for servicing are:
AB
B
C
The cylinder classification code is stamped on
the block adjacent to each cylinder.
Cylinders are either class A or class B, both of
which may occur in the same block.
Pistonsizes
Standard A (not spare part) mm (in)
Standard AB mm (in)
Standard B mm (in)
Standard C mm (in)
First oversize (0.5 mm) mm (in)
Second oversize (1.0 mm) mm (in)
Piston clearance (nominal) mm (in)
Classlflcatlon,
Piston/cylinder
A/A mmx10-
3
AB/A mmx10-
3
AB/B mm x 10-
3
8/8
mmx 10-
3
0
89.971-89.980 (3.5422-3.5425)
89.980- 89.989 (3.5425-3.5429)
89.989-89.997 (3.5429-3.5432)
89.997 -90.013 (3.5432-3.5438)
90.4 72- 90.488 (3.5619-3.5625)
90.972-90.988 (3.5816-3.5822)
0.007 - 0.037 (0.0003- 0.0015)
Clearance
20-41
11-32
14-40
6-31
13mm
