(
70019401960 Specifications
Section
2 B 280 Engine
Group 21 Engine block
Cylinder head
Max warp:
Maximum warp is 0.05 mm (0.002 in) per
100 mm (4 in) length.
I
[
Note: Do not level a warped cylinder head,
replace it!
n~Ql;J 129860
Cylinder liners
Bore liners marked 1 (A-marked piston) ........................ .
2 (B-marked piston) ....................... .
3 (C-marked piston) ....................... .
Liner height above
block face ................................. .
Shims for adjustment of liner height:
thickness, orange paint marking
............................ .
white paint marking
.............................. .
blue paint marking ............................... .
Pistons
Max weight difference between pistons in same engine .......... .
Piston
float ..................................... ............ .
Piston diameter, A-marked pistons
........ .
B-marked pistons .
....... .
C-marked pistons
........ .
91.00-91.01 mm
91.01-91.02 mm
91.02-91.03 mm
0.14-0.21 mm
0 .098-0.134 mm
0.118-0.154 mm
0.138-0.194 mm
6 grams
0.070-0.090 mm
90.920-90.930 mm
90.930-90.940 mm
90 .940-90.950 mm
(3.5826-3 .5830 in)
(3.5830-3.5835 in)
(3.5835-3.5838 in)
(0.0055-0.0083 in)
(0.0039-0.0053 in)
(0. 0046-0.0061 in)
(0.0054-0.0076 in)
(0.0028-0 .0035 in)
(3.5822-3.5826 in)
(3.5826-3.5830 in)
(3.5830-3.5834 in)
((0)) t
~ ~~ Piston diameter is measured at right-angles to gudgeon pin bore, 13 mm (0.512 in) from bottom edge.
135676
Piston rings
Side clearance (measured with ring on piston) .. ............ . mm
Ring gap measured 13 mm (0.51 in)
from
lower edge of cylinder
Upp er Lower Oil ring
com pres-compres-
sion ring sion ring
0.045-0.
074
0.025-0.054 0.009-0.233
in
Ring gap when checked in 91 mm (3.5826 in)
. 0.0017-0.0029
0.0009-0.0212 0.0003-0.0091
(cylinder,
see fig) ..................................... .... mm
Gudgeon (piston ) pins in
0.40-0.60 0.40-0.60 0.40-1.45
0.0157-0.0236 0.0157-0.0236 0.0157-0.0570
Piston. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.007-0.017 mm (0.0003-0.0007 in)
87
"' lit ill lit ·,11 tit ill, til Itil
