If pump is oil mist lubrication, check that the mist is flowing properly prior to starting pump.
Use good grade SAE #30 non-detergent motor oil. Units are shipped without oil but should be checked
before starting.
Fill seal cavity with oil through hole provided on top of bearing housing nearest pump casing, until you
see oil through hole opening. Install breather to vent any oil vapor.
NOTICE:
It is recommended that the seal cavity oil be drained (through the drain hole) and replaced with
clean grade SAE #30 non-detergent motor oil every 6 months.
The mechanical shaft seal is a wearing part that will eventually need to be replaced. A leaky seal must
be replaced quickly to prevent damage to the pump. Any overflow of liquid through the breather (vented
plug) is an indication of a possible seal failure.
CAUTION:
At the first sign of overflow from the cavity vent, the oil drain plug should be removed from the seal cavity
chamber to drain the pumpage and remaining oil. The cavity can remain opened until the pump can be
shut down and the mechanical seal checked or replaced. Failure to do so may contaminate the bearing
housing and void warranty
OIL CAPACITY OF SEAL CAVITY
30TH
20 fl. oz. minimum
40TH
20 fl. oz. minimum
6ETH
20 fl. oz. minimum
8GTH
20 fl. oz. minimum
10GTH
20 fl. oz. minimum
C. MOTOR BEARING LUBRICATION:
Follow motor manufacturer's specification.
5.5 Impeller Running Clearance
The impeller running clearance, the distance between the impeller vanes and wear plate, is adjusted at
the factory prior to shipment to .020"-.030". To adjust this clearance in the field, shut down the pump,
disconnect power supply to the pump and use the following instructions.
1.
Drain pump casing (1) completely by removing drain plugs (2) from both suction and discharge
chamber.
2.
Remove clean-out cover (83) by unscrewing the two hand knobs (81).
3.
Reach inside the pump casing through the clean-out hole with a feeler gage and measure the gap
between the impeller vanes and wear plate (89). Measure this gap at each impeller vane. If this gap
is not within the allowable limits of .020"-.030", adjust this clearance as follows:
a) Unscrew the three jack-screws (112) and jam nuts (111). Partially loosen the bearing carrier
capscrews (45).
b) Adjust the jack-screws (112) and capscrews (45) until the front clearance between the impeller
vanes and wear plate falls within the allowable range of .020"-.030". Tightening the jack-screws
(112) will increase the front clearance and tightening the capscrews (45) will decrease the front
clearance.
5.5 Impeller Running Clearance
Model Trash Hog II Installation, Operation, and Maintenance Manual
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