Tools
Needed:.
.
Adjustable Wrench
Phillips screwdriver
Plastic mallet
3/8"
open end wrench
Needle nose pliers
Bearing grease
..
114" hex
key
wrench
1. Remove the clamps holding the drain tube 1126) to
2.
Disconnect the pump outlet hose-(47) from the
displacement pump outlet nipple
(46).
3.
Remove the screws
(871
and presshre control cover
(36)
and disconnect the four motor leads.
4. Use an adjustable wench to loosen the conduit
connector nut
(na)
at the pressure control
assembly
(43).
5.
Swing the conduit
(221
away from the conduit
elbow
(77b).
6. Pull the motor leads through the elbow, one
at
a
time.
,
the displacement pump.
.. .
7.
Loosen the nut of the connector
(77a)
at
the motor
and pull the conduit
(221
ahy from the motor, then
pull the leads through the conduit, one at
a
time.
8. Unscrew the connector elbow (77b) from the
9.
Pull
the wires through
ttie
elbow,
one
at
a
time.
10. Remove the front cover and screws (31,32).
11.
Use
a
114"
hex key wrench to remove
the
two
screws
(51
)
and washers
165)
from the recess of the
drive housing, and the
two
screws
(30)
and washers
'
(651
from the lower rear
of
the motor front end bell
(lb).
motor.
..
12.
Remove the motor cover (14) and screws
(32).
13. Use
a
plasn'c mallet to gently tap the displacement
pump
(39)
from
the
rear to loosen the drive housing
from the front end bell. Then pull the drive housing
away from the end bell.
CAUTION
removing the drive housing
(2).
It
is
easiM
damag
DO
NOT
allow the gear- cluster
(9)
to
fall when
ed
il
dropped. The cluster may stay engaged in
either
the
front end bell or the drive housing.
end of the gear cluster
(9)
or allow them to fall
DO
NOT
lose.the
thrust
balls
(10) located
at
each
between gaan. The ball, which is heavily covered
with
grease, usually
stays
in
the gear recesses, but
could be dislodged.
If
caught betwaen gears and
not removed, the balls will seriously damage the
drive housing. If the balls are not in place, the
bearings will wear prematurely.
14. Use
a
114" hex key wrench to remove the
two
screws 141) and lockwashers
(62)
from the under-
side of the motor mounting frame.
Be
sure to sup-
port
the
motor to
keep
the
sprayer from tipping.
15. Lift the motor assembly
off
the
frame.
16. Place thenew motor assembly.on'the frame and
align with the frame mounting holes. Install the
screws (411 and lockwashen
(62)
tightly.
17. Liberally grease the gear cluster (9) and pinion gear
bell.
Check to
be
sure the thrust balls (10) are
in
(01
and pack
all
bearings
in
the motor front end
place.
18. Place
the
bronzecolored washer
(2)
on.the.shaft
protruding from the big gear in the drive housing
(2).
19. Align the gears and push the drive housing
(21
straight onto the front end bell and. locating pins.
20.
Starting at Step
12
and working backwards, con-
tinue to reassemble the sprayer.
NOTE:
Use
a
turning motion
on
the conduit when
feeding wires through
it.
21.
Reinstall the conduit seal (138not shown) around
the wires
in
the conduit elbow
I77b)
at
the
pressure
control to keep contaminants .from entering the
pressure control.
22.
Reinstall
the
motor cover and pressure'control
cover.
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