Workshop Manual

0312 1642 - 0138
14/22
© 11/2004
4
4 Technical data
4.1 Test and adjustment data
2011
02 85 Piston ring joint clearance of the 2nd
piston ring
B/FL/M engines
minute ring 1.5 - 2.0
mm
Wear limit 2.5
02 86 Piston ring joint clearance of the 3rd
piston ring
Roof chamfer ring 0.4 - 0.7
mm
• Wear limit
• FL/M engines
1.2
• Oil slit ring
• B/FL/M engine
0.3 - 0.6
02 87 • Axial clearance of the 1st piston ring
• Rectangular ring
• Wear limit
• FL/M engines
0.2
mm
Axial clearance of the 1st piston ring • Wear limit
• BFL/M engines
Trapezoidal
groove wear
gauge contact with
piston
02 88 Axial clearance of the 2nd piston ring Wear limit 0.2 mm
02 89 Axial clearance of the 3rd piston ring Wear limit 0.15 mm
02 91 Piston ring height 1st. piston ring Rectangular ring 1.975 - 1.990
mm
Double-sided
trapezoidal ring
3.0
02 92 Piston ring height 2nd piston ring minute ring 1.975 - 1.990 mm
02 93 Piston ring height 3rd piston ring • Roof chamfer ring
• Wear limit
2.975 - 2.990
mm
• Oil slit ring
• Wear limit
2.975 - 2.990
02 95 Position of the piston ring joints Angle of twist to each
other
90 - 120 °
02 96 Position of the piston ring joints roof
chamfer ring
Angle of twist of spring
joint to piston ring joint
180 °
20 97 Compression height Piston class A 51.67 mm
Piston class B 51.77 mm
ID
No.
Name Additional information Value Unit