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Product Manual A

ManualsBrandsGenerac ManualsEngine Driven Full Trash PumpsDiesel Dry Prime Mobile Full Trash Pump — 1,450 GPM, 4in. Ports, Tier 4 Final Approved
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Maintenance
66 MTP4000-6000DZV/DZD Operating Manual 31609 A
ACTUATOR NECK SEAL REMOVAL AND REPLACEMENT
1. Remove the actuator assembly as described in “Suction Valve Removal and Replacement” on page 65.
2. Remove the priming chamber hose from the suction nozzle.
3. Remove the four hex nuts holding the lower housing to the pedestal.
4. Remove the vacuum pump lower housing and actuator neck seal.
5. Lubricate the new actuator neck seal and push it into the vacuum pump lower housing.
6. Fit the assembly over the actuator shaft.
7. Orient the vacuum pump inlet suction nozzle to face the priming chamber and replace the four hex nuts.
8. Refit the actuator/seal assembly and remaining components. Refer to “Suction Valve Removal and
Replacement” on page 65.
CRANKSHAFT REMOVAL AND REPLACEMENT
Removal:
1. Remove the actuator neck seal as described in“Suction Valve Removal and Replacement” on page 65.
2. Remove the 1/2 in. NPT drain plug from bearing housing; drain and discard oil.
3. Remove the four 3/8 in. capscrews from the pedestal lower flange.
4. Carefully remove the vacuum pump pedestal complete with seals and linear bearing. Remove and discard
the O-ring taking special care not to damage the actuator rod surface.
5. Remove the four 1/4 in. capscrews from the inspection plate.
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 equiva-
lent.
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.