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PAGE 14 — STR 31V
SVA-SERIES • VIBRATOR MOTOR — PARTS AND OPERATION MANUAL — REV. #1 (06/13/07) — PAGE 14
A
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
NOTE
SVA-SERIES — MAINTENANCE
MAINTENANCE
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.
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
the threadlock (loctite) while you
unthread the head from the shaft. This
will help prevent damage to the
threads.
Bronze Wear Bushing Replacement
Figure 7. Bronze Wear Bushing
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
Refer to Figure 7 and the following steps for removal and
replacement of the 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)
1
2
5
6
7
8
4
3
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.
4. Inspect brushes frequently
and replace when they
become worn to a length of
3/8". (See Length A in
Figure 6).
Figure 6. Brush Length