GORMAN-RUPP PUMPS AMT 382A-99 Specifications Information And Repair Parts Manual

Specifications Information and Repair Parts Manual
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.
©2024 AMT Pump Company, A Subsidiary of The Gorman-Rupp Company, All Rights Reserved.
Periodic maintenance and inspection is required on all pumps to insure proper operation. Unit must be clear of debris and sediment. Inspect for leaks and loose bolts. Failure
to do so voids warranty.
2-Inch Thermoplastic Dewatering Pumps
Refer to pump manual 1808-633-00 for General Operating and Safety Instructions.
DESCRIPTION
These centrifugal pumps include a precision mechanical seal with stainless steel spring, Buna N seals, carbon face and ceramic seat, and a built-in
check valve for better self-priming capabilities (up to 20 ft. suction lift). Clog resistant impeller is capable of handling solids up to 7/16" diameter. Pumps
include molded carrying handle, and two 2" NPT pipe nipples (optional rubber foot pads available). Handle liquids from 40º to 130º F (4º to 54º C). For
use with nonflammable, non-abrasive liquids compatible with pump component materials.
Applications include pumping clear, clean water, salt water, and some liquid fertilizers and herbicides. An optional EPDM Seal/O-ring/Flapper Kit (see
Repair Parts List) is available for pumping "Alachlor Herbicides" (such as Monsanto's Lasso). If the fertilizer or herbicide is not compatible with Buna-N
(standard) or EPDM (optional) rubber materials, do not use these pumps.
MAINTENANCE
To prevent Accidental starting always remove spark plug, or
disconnect and ground spark plug wire before attempting to
service or remove any component.
MECHANICAL SEAL REPLACEMENT
Refer to Figures 1, 2, and 3.
IMPORTANT: Replace seal seat, (Ref. No. 22) and seal head (Ref.
No. 23) at the same time to ensure proper mating of mechanical seal
components!
1. Unthread fasteners (Ref. No. 16), nuts (Ref. No. 25) and
remove casing (Ref. No. 15) and casing seal (Ref. No. 7)
from adapter (Ref. No. 3). Unthread fasteners (Ref. Nos. 11
and 19) and remove volute (Ref. No. 20) and volute seal
(Ref. No. 6) from adapter.
2. Unthread impeller fastener (Ref. No. 10) and remove
impeller (Ref. No. 9), impeller seal (Ref. No. 4) and shims
(Ref. No. 21).
NOTE: To keep shaft from turning, hold impeller while unthreading
impeller fastener.
3. Pry seal seat from impeller recess with a screwdriver (See
Figure 1).
4. Remove adapter by unthreading adapter fasteners (Ref. No.
5) and fastener seals (Ref. No. 4). Press old seal head and
adapter seal (Ref. No. 24) out of adapter by pushing from
engine side.
5. Clean adapter and impeller seal recesses before installing
new pieces.
3824-252-00
Figure 1 – Mechanical Seal Replacement
6. Carefully wipe polished surface of new seal seat with a
clean cloth.
7. Wet rubber portion of seal seat with a light coating of soapy
water.
8. Press seal seat squarely into recess in impeller. If seal seat
does not press squarely into recess, it can be adjusted by
pushing on it with a piece of pipe. Always use a piece of
cardboard between pipe and seal seat to avoid scratching
lapped, highly polished surface of seal seat (handle it
carefully).
9. After seal seat is in place, ensure that it is clean and has not
been marred.
10. Using a clean cloth, wipe shaft and make certain that it is
completely clean.
11. Place adapter seal (O-ring) onto seal head behind flange
and press assembly into adapter as shown in Figure 2.
Do not touch or wipe polished face of seal head.
12. Secure adapter on pedestal mounting face, using fasteners
and fastener seals. Be sure to replace gasket (Ref. No. 31)
between engine
disassembly.
1
382A-99 & 382H-99
and adapter, if removed during
3/2024