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Blower Orientation
(See Fig. 3-Page 6)
Power Take Off
• PTO Horsepower and torque rating must be adequate for desired blower RPM and pressure demand.
(See P657 Blower Specifications Fig.1, Page 4)
• Select proper ratio for the desired engine speed and correct blower input shaft speed.
(Engine RPM x PTO ratio = Blower RPM. Blower RPM 1000 min, 2000 max)
• Verify PTO rotation
(See Fig.2)
.
• Determine the desired blower orientation prior to mounting.
Note:
Blower should be mounted on the same side of the truck as the PTO Location to keep drive shaft angles
to a minimum.
• Ensure sight glasses, melt plugs, magnetic plugs, and breathers are in the correct positions prior to mounting.
Note:
Melt plugs are left-hand threads. One plug must be on the discharge side of the blower.
• Sight glass should
ALWAYS
be on the lower side opening, closest to the frame rail.
• The magnetic drain plug should
ALWAYS
be installed pointing down.
• The breathers should
ALWAYS
be installed on the top of the oil tanks, shielded from elements.
Note:
Remote breather kits are available for harsh environments.
(Fig. 2)
Mounting the P657 Blower
Typical Eaton
Transmission
Crankshaft
Rotation
Clockwise PTO Rotation
Opposite: Opposite of the
crankshaft rotation
Typical DT-12
Transmission
Counter Clockwise PTO Rotation
Crank: Engine
crankshaft rotation
Crankshaft
Rotation
