WinGD X72DF - Page 73

Location
code
Key Item Measured di-
rection
Nominal di-
mension (usu-
al, new) [mm]
Maximum
clearance di-
mension (be-
cause of wear)
[mm]
Rubbing ring Outer diameter
719.3
-0
-0.1
3415 Piston rod
004 Rod Outer diameter
278
-0.056
-0.108
Minimum
277.05
3425 Piston rings
007 Top ring - height Vertical
22
0
-0.03
011 Middle ring - height Vertical
13
0
-0.03
015 Bottom ring - height Vertical
13
0
-0.03
006 Top ring - clearance Vertical 0.50 to 0.58
Point A - 0.80
Point B - 1.00
010 Middle ring - clearance Vertical 0.45 to 0.53
Point A - 0.75
Point B - 0.95
010 Bottom ring - clearance Vertical 0.45 to 0.53
Point A - 0.75
Point B - 0.95
008 Top ring - width Radial 23 ±0.25
012 Middle ring - width Radial 23 ±0.25
016 Bottom ring - width Radial 23 ±0.25
NOTE: Piston rings that were installed before can be installed again if they will stay in their
minimum ring width until the next overhaul. If the same piston rings and piston head
will be installed again, you can find estimates of wear in the related sections.
X72DF
AA00-0000-00AAA-034C-A
Maintenance Manual Clearances
Winterthur Gas & Diesel Ltd.
- 73 - Issue 002 2020-10