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 TM 55-1905-223-24-7
j.
Hand turn pump pulley (4), working outer and inner V-belts (5) from pump pulley (4) grooves.
k.
Using standard puller, remove pulley bushing (3) and pump pulley (4) from axial pistons pump (16) shaft.
1. Remove hexagon nuts (8) and lockwashers (9) from axial pistons pump (16) base.
WARNING
The next step requires two soldiers because of the weight of axial pistons pump (40 pounds).
m. Lift axial pistons pump (16) up and out of unit.
REPLACEMENT
a. Install pump pulley (4) and pulley bushing (6) on axial pistons pump (16) shaft and secure.
b. On replacement axial pistons pump (16), remove any pipe plugs.
WARNING
The next step requires two soldiers because of the weight of axial pistons pump (40 pounds).
c.
Lift axial pistons pump (16) up and place into RO desalinator unit, aligning axial pistons pump base mounting holes
on adjustable base (2) mounting holes.
d. Install lockwashers (9) and hexagon nuts (8) on axial pistons pump base; do not secure.
e. Hand turn pump pulley (4) working inner and outer V-belts (5) into grooves on pump pulley (4).
f.
Turn tension adjustment (10) on adjustable base (2) that pump rests on until V-belts (5) have tension.
g. Secure four hexagon nuts (8) on adjustable base (2).
h. At midpoint between motor drive pulley (7) and pump pulley (4), press down on one V-belt (5) to allow 1/2-inch
deflection between pulleys.
(1) If V-belt deflects less than 1/2 inch, proceed to step (i).
(2) If V-belt deflects more than 1/2 inch, proceed to step (i).
(3) If V-belt deflection is 1/2 inch, proceed to step (1).
2-62
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