TM 5-4610-218-12
WARNING
c. Disassembly.
(1) Refer to figure 4-11.2 and remove the
Muriatic (hydrochloric) acid is an ex-
feeder motor.
tremely caustic acid. When handling
muriatic acid wear eye and hand pro-
(2) Refer to figure 4-11,2 and disassemble the
tection and protective clothing. Work
diaphragm pumps.
in a well-ventilated space and avoid
prolonged breathing of the fumes. If
d. Clean, Inspect and Repair.
spilled on the skin or clothing, flush
with clean water; if splashed in the
(1) Clean all contaminants from diaphragm
eyes, flush with water continuously
pump components using clean fresh water
and get medical attention.
(2) If the diaphragm is cracked, broken, or
(2) Inspect all components for white miners
worn, replace it with a new one.
deposits. If deposits are present, clean
(3) Replace defective auction and discharge
components in muriatic acid (5 percent
hoses and strainers.
hydrochloric acid solution) or an approved
cleaning solvent.
(4) Inspect the feeder case for cracks and
breaks. Inspect the receptacle connector for dam-
(3) Inspect all components for cracks, breaks
age.
wear or other damage. Direct special
(5) Replace a defective chemical solution
a t t e n t i o n to working and guard
feeder.
diaphragms for cracks, tears, and
semble the diaphragm pumps.
(4) Wipe feeder motor with a cloth dampened
in an approved solvent, then dry
the chemical solution feeder.
thoroughly.
(5) Inspect feeder motor for cracks,
b r e a k s , binding, and signs of
4-20.1. Chemical Solution Feeder Assembly
overheating.
(Raider Model only).
(6) If defective, replace feeder motor.
a. Description. The chemical solution feeder
assembly consists of two diaphragm pumps and
(7) Replace defective diaphragm pump
attaching hoses. Both pumps are powered by a
components.
single electric motor that transmits power through
a worm gear on the motor output shaft to the
internal drive shaft assembly, Built onto the drive
e. Reassembly.
shaft is a set of eccentric lobes that impart the
reciprocating motion required to operate the
(1) Refer to figure 4-11.2 and reassemble the
diaphragm pumps.
diaphragm pumps. Rotating the control knobs
increases or decreases the stroke (output) of the
respective diaphragm pump. Both diaphragm
(2) Refer to figure 4-11.2 and install the feeder
pumps can be adjusted individually without
motor.
stopping the unit.
f. Installation. Refer to figure 4-11.1 and install
b. Removal. Refer to figure 4-11.1 and remove
the chemical solution feeder.
the chemical solution feeder.
Change 3 4-56.1
