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MAINTENANCE
2.4
REPLACING THE GEARS
1.
Perform the Pressure Relief Procedure and unplug the sprayer.
2.
Loosen and remove the four screws (Fig. 2, item 1) that secure the
front cover (2) to the motor cover (3). Remove the front cover.
3.
Loosen and remove the two screws (4) that secure the motor
cover to the main housing. Remove the motor cover (3).
4.
Remove the six control panel mounting screws (5). Pull back the
control panel (6) for access to the control panel board.
5.
At the control panel board, disconnect the two wire assemblies
coming from the motor (refer to the electrical schematic in the
Parts List section of this manual, page 55).
6.
Loosen and remove the four motor mounting screws (8). Use a
T30 driver.
7.
Pull the motor (9) out of the pump housing.
If the motor will not dislodge from the pump
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housing:
•
Using a rubber mallet, carefully tap on the front
of the motor crankshaft that extends through
the slider assembly.
Before replacing any gears, apply grease to the
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new gears and bearings.
Use Lubriplate GR-132 for the gears.
Use Lubriplate 1242 for the bearings and bushings.
2
10
8
8.
Inspect the armature gear (10) on the end of the motor for
damage or excessive wear. If this gear is completely worn out,
replace the entire motor.
9.
Remove and inspect the 2nd stage gear (11) for damage or
excessive wear. Replace if necessary.
10.
Remove and inspect the gear and crank assembly (12) for
damage or excessive wear. Replace if necessary.
11.
Reassemble the pump by reversing the above steps. During
reassembly, make sure the thrust washer (13) is in place.
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9
Refill the gear box in the pump housing with five
ounces of Lubriplate GR-132.
5
6
13
12
11
8
7
IMPACT X 440
1
3
4
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