PROCEDURE
1
Operate the turning gear to move the piston to BDC.
2
Look through the scavenge ports (002) for burn scars on the piston head (001,
).
3
Put the template (001) through the related scavenge port (002).
4
Use the feeler gauge to measure the depth of the burn scar(s).
NOTE:
You can also use a depth gauge to measure the depth of the burn scar(s).
5
Remove the template (001).
6
If there are more burn scars, do
again through an other scavenge port.
7
If the burn scars are less than 10 mm, do as follows:
7.1
Use an applicable tool to grind the burn scars.
7.2
Use an emery cloth to make sharp edges smooth.
8
If the burn scars are 10 mm or more, do as follows:
8.1
Remove the piston, refer to section
.
8.2
Disassemble the piston, refer to section
8.3
Use surface welding to repair the piston head to its original thickness.
8.4
Assemble the piston, refer to section
8.5
Install the piston, refer to section
.
Fig 8-66
Top surface - dimensions check
001
002
00777
9
Find the cause of the burn scars and repair the fault.
X72DF
AA00-3403-00AAA-360A-A
Maintenance Manual
Piston (installed) - do checks of the surface and clearances
Winterthur Gas & Diesel Ltd.
- 473 -
Issue 002 2020-10
Содержание X62DF
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