TM 5-1940-322-24
0152 00
PISTON AND CONNECTING ROD MAINTENANCE (Contd)
NOTE
All pistons and connecting rods are replaced the same way. This
procedure covers the replacement of one piston and one connecting
rod.
REMOVAL
CAUTION
Take care when using ridge reamer on ridge area. Failure to comply
may result in damage to equipment.
Do not use an identifying stamp on anodized pistons. Failure to
comply may result in damage to anodized coating.
NOTE
Position engine horizontally and rotate so pistons are below carbon
deposits above ring travel area.
1.
Using ridge reamer, loosen carbon deposits on ring travel area in cylinder bore (5). Remove remaining
carbon deposits with cleaning pad.
2.
Mark location of piston (1) and connecting rod cap (3).
NOTE
Rotate engine vertically to remove piston and connecting rod
assembly.
3.
Remove two cap screws (4), connecting rod cap (3), and bearings (10) from connecting rod (2).
CAUTION
Take care when removing piston from cylinder liner. Failure to
comply may result in damage to equipment.
4.
Remove piston (1) and connecting rod (2) from cylinder bore (5).
DISASSEMBLY
NOTE
Heating the piston is not required for disassembly.
Note position of piston rings during disassembly to assist with
assembly.
1.
Remove two retaining rings (8), piston pin (7), connecting rod (2), and rod bushing (9) from piston (1).
2.
Remove piston rings (6) from piston (1).
0152 00-2
