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5
Overhauls and checking
70
71
72
73
- 38 -
Piston rings, play between the slots (mm)
Replace the piston or piston rings if the value exceeds the maximum
limit.
Piston rings, assembly order
D
A = 1st Nitrided plated piston ring
B = 2nd piston ring (torsional)
C = 3rd Nitrided plated piston ring (oil scraper)
D = Chromium plated zone
A
Note: If a word (top, or some other word) is written on the surface of
B
C
Piston rings, distance between the tips (mm)
Fit the piston ring into the top part of the cylinder and measure the
distance between the tips.
Connecting rod, piston pin
a piston ring, mount that surface upwards.
Before inserting the piston into the cylinder, oil and turn the pi-
ston rings so that the cuts are staggered 120° to each other.
Piston rings
1st piston ring
0.20÷0.35
2nd piston ring
0.30÷0.50
3rd piston ring, oil scraper
0.20÷0.50
A
B
D
clearance
(B-D)
(B-D)
Workshop Manual KD 441_cod. 1.5302.865_2
A
0.11÷0.15
B
0.07÷0.11
C
0.03÷0.065
Wear
Value
limit
1.00
chromium plated
1.00
1.00
chromium plated
122.07÷122.13
23.04÷23.05
22.995÷23.000
0.04÷0.055
wear limit
0.08
Stamped ko
nitrided
nd
ed_ rev. 01.
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