3.4 Blower
DETROIT DIESEL 53
Dirt or chips drawn through 'the blower will make deep
scratches in the rotors and housing. Burrs around such
abrasions may cause interference between the rotors or
between the rotors and the blower housing.
Leaky oil seals are usually indicated by the presence of
oil on the blower rotors or inside surfaces of the blower
housing. Run the engine at low speed and direct a light
into the rotor compartment and toward the end plates
and the oil seals. A thin film of oil radiating away from a
seal indicates an oil leak.
A worn blower drive resulting in a loose, rattling sound
within the blower may be detected by running the engine
at approximately 500 rpm.
6V-53 ENGINE BLOWER
Loose rotor shafts or worn rotor shaft bearing surfaces
will result in contact between the rotor lobes, the rotors
1. Disconnect the linkage to the governor control levers.
and the end plates, or the rotors and the housing.
2. Remove the screws and lock washers which attach
Excessive backlash between the blower rotor gears
the governor cover to the governor housing. Remove
usually results in the rotor lobes rubbing throughout their
the cover and gasket.
entire length.
3. Remove the two bolts and lock washers which hold
Remove Blower Before removing the blower from the
engine, remove the air shut-down housing as outlined in
Section 3.3.
Fig. 3. - Removing/installing Blower (6V-53 Engine)
1972 General Motors Corp
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