TM5-4930-230-13
Section Ill. MAINTENANCE PROCEDURES.
Centrifugal Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . ...5-3
Filter/Separator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Static Discharge Reel, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5-5
Fuel Dispensing Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 5-6
Fuel Dispensing Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
A-Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
Electric Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
Dispensing Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
Tank Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
NOTE
Before performing Maintenance Procedures check the following:
—Disconnect Power Cable.
—Close Tank Dispensing Valves.
The pump is a centrifugal-type
impeller, wear plate, seal, and
unit that is directly coupled
adapter shaft, and serves
to the engine. The pump case houses the
as a liquid chamber with suction and
dispensing ports. The check valve assembly consists of a large weight, gasket, and a small weight to
prevent fluid backflow through the pump case and thereby retain the prime, Repair of the pump consists
primarily of replacing damaged or worn components.
a.
Removal and Disassembly. (figure 5-1.)
(1) Remove pump drain plug (1) and drain into suitable container.
(2) Remove nuts (2) and washers (3) and remove volute (4) and O-Ring(5).
(3) Remove center screw (6) and seal (7).
(4) Remove impeller (8) by unscrewing counterclockwise
units, hold armature shaft stationary with screwdriver in slot)
(5) Remove shims (9) screws (10) and wear plate (11).
(6) Remove O-Ring packing (12) and seal assembly (13).
(7) Extract four screws (14) and compression inserts (15),
(8) Remove adapter shaft (16) and Woodruff key (17) from
while holding shaft stationary. (on EMD
remove pump from engine.
engine shaft (18).
(9) Remove nuts (26), suction flange (25), screw (24), small weight (23), gasket (22), large weight (21)
and studs (20) and (27) from pump case (19).
5-3
