Specifications Information and Repair Parts Manual
5771-95, 5773-95, 5777-95, 577A-95, 577B-95, 577D-95 & 577E-95
5771-250-00
1
4/2016
Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to assemble, install, operate
or maintain the product described. Protect yourself and others by observing all safety information. The Safety Instructions are contained in the General Operating
Instructions. Failure to comply with the safety instructions accompanying this product could result in personal injury and/or property damage! Retain instructions
for future reference. AMT reserves the right to discontinue any model or change specifications at any time without incurring any obligation.
©2016 AMT Pump Compnay, A Subsidiary of The Gorman-Rupp Company, All Rights Reserved.
Periodic maintenance and inspection is required on all pumps to ensure proper operation. Unit must be clear of debris and sediment. Inspect for leaks and loose bolts. Failure to do so
voids warranty.
Submersible Contractor Pumps
Refer to pump manual 1808-636-00 for General Operating and Safety Instructions.
MAINTENANCE
Make certain that unit is disconnected from power source before
attempting to service or remove any components!
POWER CORD REPLACEMENT
Periodically inspect power cord and replace whenever abrasion, cracking,
softening or other signs of deterioration are found.
Refer to Figures 1 and 2.
1. Place unit on workbench in upright position.
2. Remove two fasteners (Ref. No. 39) that hold outer cord retainer (Ref.
No. 38).
3. Remove fasteners(s) (Ref. No. 5) at handle (Reef. NO. 6) to free wire
loom (Ref. No. 2).
4. Remove three fasteners (Ref. No. 36) to detach handle and outer shell
(Ref. No. 37). Shell can now be slid off towards top of pump.
5. Clean dirt and rust from around wire cover (Ref. No. 7).
6. Remove two fasteners (Ref. No. 4) that hold inner cord retainer (Ref. No.
3).
7. Remove four fasteners (Ref. No. 10) holding wire cover in place.
8. Carefully pry cover from unit with screwdriver.
IMPORTANT:
Be careful to keep rust and other debris from falling into motor
housing during cover removal.
9.
Take note of proper wire configuration and connect new power cord (Ref.
No. 1) in identical fashion.
If unsure about above information or wiring diagrams, consult an
electrician familiar with motor wiring.
10.
Clean sealing flanges if necessary and reassemble pump in reverse
order.
IMPELLER INSPECTION /REPLACEMENT
If pump develops poor performance characteristics, impeller may be worn or
clogged.
IMPELLER INSPECTION
Refer to Figure 2
1. Place unit on workbench in upright position and clean rust and buildup
from around pump-to-motor flange.
2. Remove four short fasteners (Ref. No. 15), which attach base (Ref. No.
30) to unit.
3. Lift motor assembly up out of pump assembly and lay on workbench in
horizontal position. Rap down on pump body with soft mallet, if necessary,
to separate parts.
4. Inspect impeller (Ref. No. 26). If clog is found, remove debris and
reassemble in reverse order. If damage to impeller is found, such as
pitting, deep grooves, or breakage, proceed to next section.
IMPELLER REPLACEMENT
1. Remove impeller fastener (Ref. No. 28) by unscrewing in counterclockwise
direction.
NOTE:
To prevent motor shaft from turning, wedge a screwdriver between
impeller vane and impeller fastener (see Figure 1).
2. Slide off impeller washer (Ref. No. 27). Impeller is keyed to motor shaft
and can now be pulled free.
3. Install replacement impeller and reassemble in reverse order.
MECHANICAL SEAL REPLACEMENT
Motor internals are protected from contact with liquid being pumped by a
mechanical shaft seal and oil cavity. When seal wears out, potential motor life
will be compromised. Therefore, periodic seal replacement is recommended.
Time interval between replacements will depend on abrasiveness of liquid
being pumped, temperature, total accumulated runtime, etc.
DESCRIPTION
These versatile centrifugal Submersible Contractor pumps are intended for use in residential, commercial and industrial settings. Examples for usage include:
construction sites, waste water, storm water, farming, mines, marine, basement and other general drainage applications involving sediment laden liquids with
small solids. Submersible design means low noise and no priming issues. Each unit is completely assembled and includes a self-cleaning, semi-open impeller
featuring abrasion-resistant high chromium steel construction for durability. Pumps incorporate a mechanical shaft seal with long lasting silicon carbide wear
faces and feature a secondary shaft seal and oil chamber. Pumps have a 3450 RPM electric motor fitted with an unfinished power cord that requires field wiring
(no controls are supplied). Motors are rated continuous duty and single phase units have automatic restart thermal overload protection. Handle liquids from 40º
to 104º F (4º to 40º C). For use with non-flammable liquids compatible with pump component materials.
Summary of Contents for 5771-95
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