Graco ULTRA 1000 Instructions-Parts List Manual page 29

DRIVE HOUSING REPLACEMENT
(See Fig
2 5 1
the risk of a fluid injection injury, injury from mov-
Relief Procedure Warning on page
13
to reduce
ing parts or electric shock. Unplug the sprayer1
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NOTE:
Stop the sprayer at the bottom of its stroke
to get the crank
(El
in its lowest position. To
lower
it
manually, carefully rotate the blades
of the fan with a screwdriver.
1. Remove the front cover and screws (31.
3 2 1 .
2.
Disconnect the pump outlet hose ( 4 7 1 from the
displacement pump outlet nipple
(461.
3 . Use a 3/16 in. hex key wrench to remove the four
screws
( 3 3 1
and lockwashers
(491
from the bearing
housing.
4 .
Lightly tap the lower rear of the bearing housing
(271 with a plastic mallet
to
loosen
it
fromtha drive
necting rod assembly straight off the drive housing.
housing. Then pull the bearing housing and con-
5 . Use
a 1/4 in. hex key wrench to remove the two
screws
( 5 1 1
and lockwashers
( 6 3 1
from the mcess of
the drive housing and the two screws
(301
and
lockwashers (63) from the rear of the motor front
end bell (PI.
6. Lightly tap the drive housing with a plastic mallet to
Off.
loosen it from the front end ball, then pull
it
straight
CAUTION
removing the drive housing 1 1 8 1 . It is
easily
DO NOT allow the gear cluster (91
to
fall when
damaged if dropped. The gear may stay engaged
in either the front end bell or the
1
drive housing.
end of the gear cluster (9) or allow them to fall be-
DO NOTlose the thrust balls (101 located at each
tween gears. The ball. which is heavily covered
with grease, usually stays in the shaft recesses,
but could be dislodged. If caught between gears
the drive housing. If the balls are not in place, the
and not removed, the balls will seriously damage
bearings will wear prematurely.
7 . Liberally apply bearing grease to the gear cluster
place.
(91. Check to be sure the thrust balls
( 1 0 1
are in
8. Place the bronze-colored washer ( 1 8 b I end then the
from the big gear in the drive housing ( 1 8 1 . Align
silver-colored washer 1 1 8 d on the shaft protruding
the gears and push the new drive housing straight
onto the front end bell and locating pins.
.
.
9. Starting at Step 5 and working backwards, con-
tinua to reassemble the sprayer.
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