CRANKSHAFT OIL PASSAGES

TM 5-2420-222-20-1

LUBRICATION SYSTEM - CONTINUED

Drilled passages in crankshaft route lubricating oil from crankshaft main bearings to connecting rod bearings.

ENGINE OIL PRESSURE SWITCH

Sending unit considered part of electrical system.

Activates low engine oil pressure indicator light on dash to alert operator when pressure drops below safe

operating limit.

CYLINDER HEAD OIL PASSAGE

Drilled passage in cylinder head routes lubricating oil from rear engine block oil passage to rocker arm shaft.

ROCKER ARM SHAFT

Hollow shaft routes lubricating oil from cylinder head oil passage to rocker arms.

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