Procedural Steps (Cont):
6. The steer control differential is made from a magnesium alloy. Use plastic type
fillers or appropriate MIG or TIG welding equipment to make repairs.
7. Record the BDAR action taken. When the mission is completed, as soon as
practicable, repair vehicle using standard maintenance procedures.
3-17. CONNECTING ROD
OR ROD BEARING FAILURE
Broken connecting rod or rod bearing failure will cause the engine to be inoperative,
normally with extensive internal engine damage. If the engine is not damaged where it
will no longer run, it may be operated under emergency conditions, using the following
procedures. The damaged cylinder can be isolated and continued operation is possible.
The lower portion of the connecting rod must be replaced on the crankshaft to maintain
oil pressure. Without the rod on the crank journal the oil will free flow from the oil
gallery causing excessively low oil pressure with resulting damage to other engine
q Reduced mobility
q 2 soldiers
q 4-6 hours
q Wood wedge
q Engine oil and coolant
q Lifting device
1. Remove power pack.
2. Remove oil pan to gain access to connecting rod bearing caps.
3. Remove the lower portion of damaged connecting rod, bearings and bearing cap.