| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-219-14-8
4-7.7.
CRANKSHAFT AND PISTON - MAINTENANCE INSTRUCTIONS.
a. The crankshaft and connecting rod and piston assemblies are accessible for inspection and removal.
Connecting rods should be marked No. 1 (magneto end) and No. 2 (impeller end) with pencil or chalk to avoid
interchanging on reassembly if same assemblies are reinstalled. Make certain that the roller bearing retainer
assemblies and connecting rod caps are not interchanged because the connecting rod and cap are matched
assemblies and are not interchangeable.
b. The connecting rod and cap are matched assemblies and are therefore not interchangeable. In the
process of manufacturing, the rod and cap are machined as an integral unit and are then broken or split apart.
This operation leaves both the rod and cap with rough or serrated-like surfaces which, when replaced, provide
correct alignment of bearing surface and side walls. Care should be exercised when attaching the cap to assure
that the fractured areas match. To avoid turning the cap end for end, the rod and the cap are marked as shown.
4-198
|
||
|
||
