Motor Brush - Graco ULTRA PLUS+ 1500 Instruction Manual

Motor Brush
about 0.4 in (10 mm). Always check both brushes
NOTE Replace the brushes when they have worn to
9.
Reinstall the remaining parts.
and replace them together. A Brush Repair Kit, p/n
220-853, and the spring clip, p/n 110-816, are avail-
able. Order separately.
NOTE Replacement brushes may last only half as
long
as
the original ones.
To
maximize brush life,
break in new brushes by operating the sprayer for at
connecting rod pin).
least one hour with no load (remove the pump
k
INJECTION
HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
01891
Procedure on page 10.
1. Remove the motor cover (14) and both inspection
covers (A). See Fig 8.
2.
Push in the spring clip (D) to unhook
it,
and then
pull it out See Fig 9.
3. Loosen the terminal screw
( F ) .
Pull the brush lead
(G) away, leaving the motor lead in place. Re-
move the brush (C) and spring (B).
See
Fig 10.
4.
Inspect the commutator for excessive pitting,
burning or gouging. A black color on the commu-
tator is normal. Have the commutator resurfaced
by a qualified motor repair shop if the brushes
seem
to
wear too fast.
5. Install the new brush (C) so its lead is in the long
slot (K) of the holder
(H).
Slide the terminal (E)
under the terminal screw (FJ washer. Make sure
the motor lead terminal (G) is still connected at
the screw. Tighten the screw. See Fig 11.
6.
Place the spring (6) on the brush (C) as shown in
Fig 11.
7. Push in and hook the spring clip (D). See Fig 11.
8. Repeat for the other side.
I
A
CAUTION
Do not run the sprayer dry for more than
30
sec-
onds while checking the brushes to avoid damag-
ing the displacement pump.
Fig.
9
D
Fig.
10
G
A
in
this dlredo
LA
0.4
in.
g o
mm
Note:
S
ring must
coil
Minimum
brush
lengm:
Fig. 11