Operation Manual

Job Card No.:
Engine:
Filing No.:
Piston ring grooves
0178-07-10 1093
02.10.02
S/BVM 628
Checking Piston Ring Grooves
Following each piston removal renew piston rings
and gauge axial clearance "S" between new piston
ring and bottom flank or ring groove at 8 points offset
by 45°, Fig. 1.
Tools:
- Feeler gauge
Job Cards:
- 02.10.01
- 02.11.01
Job:
● Fit new piston rings as per job 02.10.01.
● Mark the insertion depth of 5 mm on a 0,4 mm
feeler gauge, Fig. 2.
● Press new piston ring against groove base in the
area of gauge point.
● Introduce feeler gauge at bottom flank of piston
ring between piston and ring.
If at any location the gauge can be inserted more
than 5 mm, the piston must be reconditioned as
per Job Card 02.11.01.
Reconditioning will also be necessary if it
must be expected that the axial clearance "S"
is exceeded within the next piston overhaul
interval according to the Maintenance Sche-
dule.
Fig. 2 Measuring procedure for gauging axial
clearances
Fig. 1 Measuring points for gauging axial
clearances
© 0392
© 50 618 1
© 50 696 1