Section 03 ENGINE
Sub-Section 02 (LEAK TEST)
03-02-4
Rotary Valve Shaft
NOTE:
It is preferable to drain the injection oil
from the rotary valve shaft, but it is not mandato-
ry.
Block oil return hose of the rotary valve shaft with
a hose pincher.
717 ENGINES
1. Oil return hose blocked with hose pincher
787 ENGINE
1. Oil return hose blocked with hose pincher
Install pump with reducer and nipple to the oil
supply hose of the rotary valve shaft.
717 ENGINES
1. Pump with reducer and nipple
787 ENGINE
1. Pump with reducer and nipple
Activate pump and pressurize to 5 PSI (34 kPa).
Check plug of the rotary valve shaft in crankcase.
Remove PTO side spark plug. If pressure drops, it
indicates a defective PTO side crankshaft inner
seal.
Remove MAG side spark plug. If pressure drops,
it indicates a defective MAG side crankshaft inner
seal.
F01B31A
1
F01B33A
1
F01B32A
1
F01B34A
1
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