TM 10-4610-241-24
TO 40W4-13-42
3-40. STROKE ADJUSTMENT ASSEMBLY (CHEMICAL FEED PUMP) REPLACE -
continued
NOTE
Removal of screws (10) and lockwashers (11) is necessary only if
extreme left or right adjustment assemblies are to be removed.
(5)
Remove front screw (10) and lockwasher (11) from pillow block (12), behind adjustment assembly to be removed
for clearance.
(6)
Using tool kit (PN260246), consisting of three parts; bolt (14), nut (13) and bar (15), thread nut (13) half way up the
bolt (14).
(7)
Feed bolt (14) thru bar (15) and thread into end of push rod (24) until it bottoms.
(8)
Rotate nut (13) counterclockwise until it touches bar (15).
(9)
Using wrench, hold bolt (14) stationary and continue to rotate nut (13) clockwise. This will pull push rod (24) away
from cam (23).
(10)
Remove three screws (16), lockwashers (17), stroke adjustment assembly (19) (with tool kit in place) and gasket
(18).
(11)
Remove bolt (14), nut (13) and bar (15) from stroke adjustment assembly (19).
b.
Installation.
(1)
Using tool kit (PN260246), consisting of three parts; bolt (14), nut (13) and bar (15), thread nut (13) half way up the
bolt. Feed bolt (14) thru bar (15) and thread into end of push rod (24) until it bottoms.
(2)
Rotate nut (13) clockwise until bar (15) touches face of stroke adjustment assembly (19).
(3)
Using wrench, hold bolt (14) stationary and continue to rotate nut (13) clockwise about 10 turns. This will pull
pushrod into housing and permit easy installation of adjustment assembly on pump housing.
(4)
Position gasket (18) and adjustment assembly (19) on pump housing and install three lockwashers (17) and screws
(16).
(5)
If removed, install lockwashers (11) and screws (10).
(6)
Turn adjustment tubes (20) to set all adjustment assemblies (19) to 0 (zero) This will facilitate manual rotation of
shaft (26).
(7)
Turn shaft (26) by hand so that scribe mark (high point) on cam (23) of adjustment assembly being installed is
centered on plunger (24).
(8)
Making sure that adjustment assembly (19), being installed, is still set on "O" (zero) check gap between high point
of cam (23) and plunger (24) with a feeler gage.
(9)
If gap is 0.002, adjustment is correct, proceed to step (13).
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