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![]() TM5-4110-234-14 
TO 40R7-5-7-1 
5-40. 
PISTONS AND RINGS (F10000RG-2) See figure 5-42. 
Figure 5-42. Piston and Rings F10000RG-2 
a. 
Rings and Pistons. 
(1)  Whenever there is a noticeable wear ridge at the top of each cylinder, remove the ridge with a ridge reamer 
before removing the pistons. If not, the rings can catch the ridge when pushing out the pistons and cause a ring land 
fracture. See figure 5-43. 
Figure 5-43. Wear Ridge and Cylinder Wall F10000RG-2 
5-58 
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