TESTING AND ADJUSTING
GOVERNORS FOR 3500 SERIES ENGINES
GOVERNOR OIL PUMP
GOVERNOR OIL PUMP ROTATION
GOVERNOR OIL SUPPLY
Check the direction of the oil pump rotation
1. Oil passages. 2. Passage for oil supply. 3.
before the governor is installed on the engine.
Passage for oil drain.
Two arrows are cast into the oil pump housing.
The governor drive adapter has four passages
One arrow indicates counterclockwise, and the other
with seals. Passages (2 and 3) on the right side are
clockwise. A reference ROTATION V is -cast in the
used when the governor is installed -on the right side of
bottom of the governor housing.
the engine. Passage (2) is the oil supply to the governor.
Passage (3) is the oil drain port for the governor.
In the above illustration, the counterclockwise
arrow is in alignment with the ROTATION V. This is the
Passages (I1) with the seals are used when the
correct direction of rotation for the 3161 Governor when
governor is installed on the left side of the engine.
it is installed on the right hand side of standard rotation
3500 Series Engines.
OIL PASSAGES IN GOVERNOR HOUSING
PUMP ROTATION DECAL
Passage (oil drain).
governor pump housing for O-ring seal. 6.
A decal on the outside of the governor housing
Passage (oil supply).
indicates the direction of governor rotation. This oil
pump is set for counterclockwise direction as shown by
Passage (4) is for oil drain and passage (6) is for
-the -oil supply in the 316l Governors.
If the direction of rotation of the governor and oil
No gasket is used between the governor and the
pump is changed, a new decal must be installed with the
drive adapter housing. A seal in groove (5) on the
decal arrow in the correct direction.
outside of the oil pump housing seals between the
governor and the large bore in the adapter housing.
Replace the large seal and the four counterbore seals
each time the governor is removed and installed.