Checking Connecting Rod Side Play

thickness gage forked rear cylinder . connecting rod

CAUTION: After flywheels and rods are assembled, make final .check to be sure oil passage is open to rod roller bearing. Apply compressed air to oil hole in side of pinion shaft, near its outer end, and observe that air escapes around connecting rod lower end. If this passage becomes blocked (closed off) in some manner and engine is assembled and put in service with it blocked, engine will get no lubrication, except in the timing gear case. This is not likely to be detected until serious damage has been done, as the oil circulation indicator in instrument panel will give no warning when the oiling system is blocked in this passage.

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