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34
4 DLT ENGINE
REPAIR DATA
CYLINDER BLOCK
Pressure test cylinder block
70
0
to 80
0
C
for leakages of water at a
5 bar
temperature of and at a
pressure of
Height of crank case
303.900/304.100 mm
(Dimension A)
Crankshaft axis from 236.300/236.380 mm
crankcase top surface
(above dimension with
MB caps and front cover
installed)
Maximum permissible Length wise ‘B’ 0.030 mm
unevenness of crank
Cross wise‘C'0.015 mm
case mating surface
with cylinder head
Maximum permissible out
0.200 mm
of parallelism between
crank case top and bottom
machined surface
Maximum permissible
0.040 mm
shift in perpendicularity
of cylinder bore from
crank shaft axis when
checked at 200 mm from
crank shaft center line
Maximum permissible
0.010 mm
taper and ovality of cylinder bore
- Liner inner dia
83+ 0.005
- Cylinder parent bore to be
finished to size
86.00 to 86.02 mm
- Honing of cylinder bores - Please refer separate
section on liner
PISTON & PISTON BORE SIZES
Stage
Cylinder Bore
Piston
dia mm stamped
Standard
83.000
A
83.010
B
83. 020
C
Standard I
83.030
A1
83.040
B1
83.050
C1
Repair 1
83.200
AR1
83.210
BR1
83.220
CRI
Repair 2
83.500
ARII
83.510
BR I I
83.520
CRI I
Piston to bore clearance
0.070 to 0.090 mm
PISTON RINGS
Type
Ring Lateral
Butt
of ring thickness clearance clearance
in piston in cylinder
groove bore
mm mm mm
1st
Compression 2.5 0.050/0.082 0.25/0.50
2nd
Compression 1.970/1.990 0.050/0.082 0.30/0.50
3rd
Oil control
2.975/2.990 0.030/0.065 0.10/0.30
Maximum permissible difference
1.500 gm
in weights of piston with pin and
rings in one engine
Fig. 61