29
COMPILER TECO/ATL
REG. CODE
1-5302-296
MODEL N°
50510
DATE OF ISSUE
01.89
REVISION 02
ENDORSED
DATE
17.04.2003
45 46
47
44
43
VIII
Piston weight
Weigh pistons when replacing them in order to avoid unbalance.
The difference in weight should not exceed 6 g.
Piston rings - End gaps (mm)
Place piston rings squarely into the unworn part of the lower cylinder
and measure the end gap.
For 11 LD535-3
1° Chromium-plated ring A = 0.30÷0.50
2° Torsional (internal tapered) ring A= 0.30÷0.50
3° Oil control ring A= 0.25÷0.50
For 11LD625-3 and 11LD626-3
1° Chromium-plated ring A = 0.40÷0.65
2° Torsional (internal tapered) ring A= 0.40÷0.65
3° Oil control ring A= 0.25÷0.50
Pistons rings - Clearance between grooves (mm)
For 11 LD535-3
A = 0.11÷0.15; limit value = 0.25
B = 0.06÷0.10; limit value = 0.18
C = 0.05÷0.10; limit value = 0.18
For 11LD625-3, 11LD626-3
A = 0.070÷0.11; limit value = 0.20
B = 0.05÷0.09; limit value = 0.16
C = 0.04÷0.08; limit value = 0.15
Piston rings - Fitting sequence
A = 1° Chromium-plated ring
B = 2° Torsional (internal tapered) ring
C = 3° Oil control ring
Note: Before fitting the piston into the cylinder stagger the ring gaps
at 120°.
DISASSEMBLY/REASSEMBLY
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