Product Manual

Owner’s Manual for Dry-Prime Diesel Trash Pumps 57
Maintenance
6. Remove the inspection cover. Remove and discard
gasket.
7. Remove the thumbscrew dippers from the
crankshaft.
8. Remove the four 1/4 in. capscrews from the O.D.E.
bearing cover.
9. Remove the bearing cover and O-ring. Discard the
O-ring.
10. Bend back the lock washer tabs and remove the
bearing locknut; use ‘C’ spanner SKF REF HN5 or
equivalent.
11. Remove the lock washer.
12. Remove the four 1/4 in. capscrews from the drive
end bearing cover.
13. Remove the drive end bearing cover complete with
lip seal.
14. Remove the O-ring and discard.
15. Carefully pull the shaft from the housing, complete
with drive end bearing.
16. Remove the connecting rod actuator shaft
assembly and inspect the bushings.
17. Use a bearing puller to remove the bearing from
the shaft.
Installation
1. On a new shaft, with a zero lead ground lip seal
surface, no speed-sleeve is required. On an old
shaft, when surface condition dictates, or on a new
shaft with a turned surface, install a speed-sleeve
0.06-0.12 in. (1.52-3.0 mm) past the outside drive
end shoulder. Refer to Figure 4-6.
2. Carefully slide the opposite drive end of the shaft
and bearing assembly into the drive end of the
housing through the con-rod bushing and engage
the shaft end in the ODE bearing.
3. Fit the lock washer, engaging locating tab in the
shaft groove.
4. Fit the bearing locknut and tighten with ‘C’ spanner;
bend lock washer tab into groove.
5. install the appropriate total thickness of shims to
leave 0.007 in. to 0.010 in. (.177-.254mm)
clearance between the ODE bearing and installed
cover.
6. Fit the ODE bearing cover and new O-ring; secure
with four 1/4 in. capscrews. Tighten to 10 ft-lbs
(13.5 Nm).
7. Fit the drive end bearing cover complete with lip
seal and new O-ring. Secure with four 1/4 in.
capscrews. Tighten to 10 ft-lbs (13.5 Nm).
8. If the actuator shaft has been disassembled from
connecting rod, assemble with the bushing fulcrum
pin and snap rings before continuing.
9. Carefully lower the pedestal, complete with seal O-
ring and linear bearing, over the actuator shaft.
(Assembly tool [P/N: 52655] is available to assist
with reassembly of the pedestal without damage to
the lip seals. Contact Generac Technical Service.)
10. Secure the pedestal with the top flat relief properly
oriented to clear the inlet nozzle.
11. Fit the actuator neck seal and remaining
components. Refer to Actuator Neck Seal
Removal and Installation.
12. Fill the bearing housing with 10W-30 oil. Fill so
static oil level is at the center of the sight glass. Do
not overfill.
Crankshaft Lip Seal Removal and
Installation
1. Remove the 1/2 in NPT drain plug from the bearing
housing. Drain and discard oil.
2. Remove the four 1/4 in. capscrews from the drive
end bearing cover.
3. Remove the drive end bearing cover complete with
lip seal.
4. Remove and discard the O-ring.
5. Pull the lip seal from the cover and discard.
6. Clean and lubricate the lip seal cavity. Press in the
lip seal fully against the shoulder (lip nearest the
bearing).
7. Inspect the speed-sleeve; replace if required.
8. Lubricate the shaft sealing surface.
9. Fit the new O-ring on the bearing cover and slide
the assembly over the shaft. Align the screw holes.
10. Secure the cover to the bearing housing with four
1/4 in. capscrews. Tighten to 10 ft-lbs (13.5 Nm).
11. Fill the bearing housing with 10W-30 oil to where
the static oil level is below the center of the sight
glass. Do not overfill.
Roller Bearing Removal and
Installation
Follow procedures in Crankshaft Removal and
Installation and Crankshaft Lip Seal Removal and
Installation.
Connecting Rod/Drive Rod Assembly
It is recommended that these items be purchased pre-
assembled with bearing finish machined and reamed. For
removal, refer to Crankshaft Removal and Installation
and Crankshaft Lip Seal Removal and Installation.