1201 / 1525
ENGINE
34
VACUUM PUMP:
Piston diameter
70
mm
Stroke
30 + 0 1
mm
Total displacement
115.5
cm
3
Delivery at engine speed of 2800 rpm
162
Litre/min.
Standard and Repair sizes of sleeve bore & piston:
Dimension in mm
Bore diameter
Piston stamped size
Piston stamped size
(Cast Iron)
(Aluminium)
69.995/69.985
69.97
69.92
70.005/69.995
69.98
69.93
70.015/70.005
69.99
69.94
Choose correct
70.070/70.060
70.04
69.99
sleeve size
70.080/70.070
70.05
70.00
and piston
70.090/70.080
70.06
70.01
stamped size
70.120/70.110
70.09
70 04
70.130/70.120
70.10
70.05
70.140/70.130
70.11
70.06
VACUUM PUMP PISTON RINGS :
Dimension in mm :
Groove Piston ring
Width of ring
Lateral
Butt clearance
designation
groove
clearance
(India Pistons Ltd ) (Goetze India Ltd.)
1
Taper face
2.5 + 0.020
0.010-0.042
0.25-040
0.25-0.45
compression ring
2
Taper face
2.5 + 0.020
0.010-0.042
025-0.40
0.25-0.45
compression ring
3
Scraper ring
3.0 + 0.020
0.010-0.042
0.30-0.45
0.20-0.45
4
Oil control ring
4.0 + 0.020
0.010-0.042
0.25-0.50
0.02-0 45
Vacuum pump-piston pin outer dia
16.016/16.011
mm
Vacuum pump bore dia in piston for pin
Cast iron piston 16.046/16.041
mm
Aluminium piston 16.0235/16.0185
mm
Piston pin clearance in con-rod bush
0.009/0.024
mm
Piston pin clearance in piston
Cast iron piston 0.025 to 0.035
mm
Aluminium piston 0.0025 to 0.0125
mm
Connecting rod big end parent bore
35.016/35.000
mm