AMT 4660-99, Спецификация, информация и руководство по ремонту запасных частей

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4660-254-00 3 10/2015
Specifications Information and Repair Parts Manual
4660-99
x
Polypropylene Piston Drum Pumps
d. Install clevis pin through the links and the opposite hole in
the housing.
Figure 6
e. Install hairpin clip through the hole in the clevis pin. Ensure
that the flat washer (Ref. No. 5) is installed between the
hairpin clip and the link.
6. A spout (Ref. No. 34) is provided as a standard accessory.
The spout is threaded into the 3/4" discharge outlet.
(Position spout downward). Wrap the threads with Teflon
tape (approx. 2 turns) and screw in hand tight only.
Figure 7
OPERATION
1. Remove hose from hanger and place nozzle in a container.
Operate handle to prime the pump. Six to twelve rapid
strokes are required under most conditions for priming. After
the pump is primed, it will deliver about one gallon for every
five strokes (17 gallons per 100 strokes).
NOTE: A vacuum breaker is built into the pump discharge. This
prevents siphoning the drum if the hose drops from its hanger.
NOTE: The barrel is vented by four relief channels molded into the
bung adapter. This prevents drawing a vacuum in the barrel.
MAINTENANCE
Important: Periodically inspect the pump, hose assembly and suction
tubes for weak or worn conditions. Make certain that all connections
and fasteners are tight and secure. Perform routine maintenance as
required.
1. To test vacuum breaker, lay loose on ground with nozzle in
a suitable container to hold the liquid. Operate the handle
until liquid flows from the nozzle. Stop pumping: the hose
should drain and the flow should stop. If flow continues
without moving the handle, place the nozzle in its hanger to
stop the flow. Inspect the vacuum breaker vent for blocking
or freezing. Flush the vent with fresh water if pumping
chemicals, or with cleaning product if pumping petroleum
products.
IN ORDER TO INSPECT INTERNAL PARTS, THE
PUMP MUST BE DISASSEMBLED AS FOLLOWS:
1. Remove hose assembly and suction tubes from the pump
housing.
2. Remove hex nuts (Ref. No. 21) and screws (Ref. No. 19)
from the pump housing. Remove cover plate (Ref. No. 18)
and gasket (Ref. No. 17), being careful not to damage the
gasket.
3. Remove large and small valve assemblies (Ref. Nos. 11
and 23) and inspect for broken or weak springs or damaged
or clogged valves.
4. Remove cotter pin (Ref. No. 6) from 1" clevis pin (Ref. No.
3) which holds handle (Ref. No. 2) to the piston rod.
Remove cotter pin clip, flat washer and clevis pin (Ref. Nos.
6, 4 and 7) from links (Ref. No. 8). Remove pin from piston
rod and set handle aside. Slide piston assembly (Ref. No.
25) from the housing (Ref. No. 1)
5. Inspect Teflon piston (Ref. No. 27) in piston groove. It must
extend 1/32" above the edge of the piston to seal properly. If
the ring has worn flush with the piston edge, then the Teflon
piston ring must be replaced. When replacing the Teflon
piston ring, always replace the Viton )- ring (Ref. No. 26)
because extended compression reduces its ability to seal.
6. Inspect piston bore in housing (Ref. No. 1) for wear. Any
gouging or scraping indicates the liquid being pumped
contains abrasives. Replace the housing, Teflon piston ring
and Viton O-ring (Ref. Nos. 1, 26 and 27) if the surfaces are
gouged or worn.
7. Remove the two screws (Ref. No. 9) which hold retaining
plate (Ref. No. 10) to the housing. Remove plate to expose
piston rod O-ring (Ref. No. 1). Replace O-ring if worn or cut.
IN ORDER TO REASSEMBLE THE PUMP, PROCEED
AS FOLLOWS:
1. Install piston rod O-ring (Ref. No. 11). Install retaining plate
(Ref. No. 10) with the groove facing away from the pump
housing. Ensure that the Viton O-ring is inserted in the
piston ring groove first and then the Teflon piston ring. Slide
piston rod into housing. The Teflon piston ring may catch on
the edge of the housing. To help seat the ring, turn piston
slowly while pushing ring into groove with fingers. DO NOT
FORCE THE PISTON!
2. Install clevis pin (Ref. No. 3) through the piston rod and
handle.
3. Install the two small valve assemblies (Ref. No. 22) in the
housing first and then the two large valve assemblies (Ref.
No. 23). There is a small tab molded into the valve seats
which fits a guide channel in the housing. This prevents
installing the valve seats backwards. If these tabs are
broken, please note the (lower) suction valve seats should
have their springs facing each other and that the (upper)
discharge valve seats should have their springs facing away
from each other, when installed.
4. Inspect cover plate gasket (Ref. No. 17) for damage.
5. Lay cover plate and gasket assembly on the housing and
install screws (Ref. No. 19) and hex nuts (Ref. No. 21).
Tighten the screws and nuts firmly enough to compress the
gasket.
6. DO NOT OVER TIGHTEN!
7. Install the hose and suction tubes as required. Refer to
Figure 3.