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Page Title: Section II. PRIMER PUMP ASSEMBLY
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Figure 8. Foam metering valve, exploded view.
Section II. PRIMER PUMP ASSEMBLY
41. General
a. Removal. Remove the primer pump assembly
(TM 5-4210-205-12).
The priming system consists of a rotary vacuum
pump operated by a 24-volt electric motor controlled
through a priming pump valve mounted in the pump
b. Disassembly. Refer to figure 9 and disassemble
compartment, and a microswitch mounted on the
the primer pump assembly.
priming pump valve.  As the priming pump valve is
actuated the microswitch starts the priming pump motor.
43. Primer Pump Assembly, Cleaning, Inspection,
The priming pump motor drives the primer pump which
and Repair
sucks water into the centrifugal type fire pump suction
line, priming the pump.  After both the suction and
a. Cleaning.
Clean all parts in an approved
discharge casings have been completely filled, water is
cleaning solvent and dry thoroughly.
then discharged through the bottom of the primer pump,
and the primer pump must be manually shut off.
b. Inspection. Inspect all parts for wear, defects,
42. Primer Pump Assembly, Removal and
and damage.
Disassembly
TAGO 5947-A
18

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