Waterous Company
F−2058
Page 6 of 6
2. Position the gear case over the shaft sleeve
on the engine and replace the four socket head
cap screws and washers. Inspect and replace
washers as necessary.
3. Insert the key, gear, and gear retainer on
the engine crankshaft. Tighten screw securely.
4. Install the mechanical seal ring and oil seal
in the gear case cover adapter, being careful
not to scratch the sealing surfaces.
5. Insert the impeller shaft assembly in the
cover adapter. Be sure that the snap ring is se-
cure in the groove, and that the bronze spacer
is in place.
6. Using a new gasket, if necessary, place the
cover adapter on the gear case.
7. Lubricate the impeller hub with light oil
and carefully press the mechanical seal on the
hub.
8. Install the impeller on the shaft and insert
the key. Place the washer and locknut on the
shaft.
9. If a new wear ring is used, press it into the
volute carefully so that it seats squarely in the
bottom of the bore.
10. Place the volute over the lubricated O−ring
of the adapter and replace the 3 bolts, nuts and
lock washers, and nut and lock washer on stud.
11. Complete reassembly of the pump and any
fittings previously removed.
TESTING
1. Before testing the pump, turn it over a few
times with the engine starter or rope. Spark
plug should be disconnected. Be sure there are
no abnormal rubbing noises.
2. The mechanical seal may leak when the
pump is first run after it has been repaired.
This leakage should stop after the seal faces
run−in.
3. With the pump running, check for unusual
noises or leaks at volute joints, adapter/gear
case engine screws, or shaft sleeve. These
should be corrected before the pump is re-
turned to service.
