MAINTENANCE
CAUTION
Before performing any maintenance on this unit, ALWAYS MAKE CERTAIN that the switch is in the "OFF" position and the power cord is disconnected from the power source.
This is a universal motor and it will run at approximately its rated speed if the motor and its attached equipment are properly operated and maintained.
1.Have repair work performed by an authorized service facility, using identical or manufacturer approved replacement parts.
2.This motor uses sealed bearings and does not require lubrication.
3.Visually inspect the motor daily before use for defective or missing parts, and have repairs made before use.
4.Inspect brushes frequently and replace when they
become worn to a length of 3/8". (See Length A in Figure 6).
A
Figure 6. Brush Length
5.Keep air inlet and air exit louvers clean and free of concrete and debris. Failure to do so will result in rapid motor overheating and parts failure.
6.Clean air filter as needed. If unit is used in high dust areas, filter will have to be cleaned more often.
7.Use a screw driver to tighten brush caps. DO NOT OVERTIGHTEN. The brush cap must be tight enough that the brush holder does not move.
8.The 314V and 382V flexible shafts require cleaning and relubrication every 100 hours of operation. Refer to flexible shafting operating instructions for maintenance instructions.
9.Vibrator heads should be inspected and relubricated every 100 hours of operation. Follow the instructions for vibrator heads.
Heat should be used to break down
NOTE the threadlock (loctite) while you unthread the head from the shaft. This will help prevent damage to the threads.
SVA-SERIES — MAINTENANCE
Bronze Wear Bushing Replacement
Refer to Figure 7 and the following steps for removal and replacement of the bronze wear bushing.
1
2
3
4
5
7
8
6
1.Slotted Spring Pin
2.Quick Disconnect Knob
3.Spring Housing
4.Compression Spring
5.Lock Pin
6.Output Endbell Shaft
7.Bronze Wear Bushing
8.Shaft Coupling
Figure 7. Bronze Wear Bushing
1.If installed, remove head assembly and shaft coupling (item 8, Figure 7).
2.Remove pin (item 1, Figure 7) using hammer and punch of appropriate size.
3.Once the pin is removed, the knob, spring and lock pin can easily be removed. (items 2, 4, and 5)
