Graco Hydra-Spray EH 433 GT Series Instructions-Parts List Manual page 18

82
17
9
65
34
55
Fig 12
NOTE: Refer to Fig 12 for this procedure.
If the electric motor (63) won't run and the circuit, on/off
switch and fuse are good, relieve pressure, unplug the
sprayer and proceed as follows.
1. Remove the shield (1 19), the four screws (9) and
washers (17) and the upper fan guard (82). Loosen
the fan blade setscrew and remove the fan (26).
2. Remove the switch box cover (34) and disconnect
the power cord wires. Do not to scratch the smooth
mating surfaces of the switch box (65) and
(34).
ELECTRIC MOTOR REPLACEMENT
75
26
63
46
44
16
66
47
5
4
74
cover
3. Drive out the two spring pins (16) and then pull out
the handle (75). Hook the switch box conduit with a
hoist and lift the unit about 6 in. (150 mm) off the floor.
Pull the cart frame (74) down out of the
mounting (44) and move it out of the way.
4. Remove the eight screws (4) and washers (5) hold-
ing the reservoir mounting (44). Raise the unit high
enough for the reservoir (66) to clear. Pull the reser-
voir down off the unit and pour out the hydraulic fluid.
5. Carefully lower the unit and tilt it back until the arms
of the support mounting (44) are resting on the floor.
6. Put the cart handle (75) through the arms. Hold the
hook on the switch box (65) as you lower the unit to
make sure it doesn't slip off.
7. Remove the four electric motor mounting screws (7
– see page 20), hold the motor (63) by the shaft and
switch box (65), and then rock it from side to side to
free it from the support mounting. Carefully pull it out
of the cooling coils (46).
8. Screw the switch box (65) and nipple (11 – see page
20) out of the motor. Take the coupling off the motor
shaft and install it on the new motor. When installing
the nipple and switch box, engage the threads at
least five full turns.
9. Carefully slide the new motor through the cooling
coils (46), forcing it into the support mounting, and
tightly install the mounting screws.
10. Set the gap between the two coupling halves at
0.31 in. (0.8 mm), and then tighten the coupling
setscrew securely. See Fig 13, page 19.
11. Clean the reservoir (66) of sediment and reassemble
the unit using a new gasket (47). Fill the hydraulic
fluid reservoir through the fill hole filter (55).
support