Instruction Manual

User Manual
Page 13 June 2014
Brush Removal
For the location of the parts used in the following procedures
see Figure 14 and Table 3.
1. Disconnect the line cord from the power source.
2. Lay the motor on its side with the brush cap (6) facing up.
3. Use a 1/2 in 6-sided socket to unscrew the plastic brush
cap (6) from the motor half.
4. The brush spring (5) will pop out. Carefully remove the
brush spring by gently pulling on the spring.
5. Repeat these steps for the opposite side.
Brush Replacement
OTE:N Brushes should be replaced in pairs.
1. Inspect and replace damaged O-rings.
2. Lubricate the O-ring prior to cap installation
3. Align the new brush (5) with brush holder. Insert the
new brush.
4. Push the spring into the holder as you screw the brush
cap back into the housing.
OTE:N The O-ring must be on the brush cap before you
screw the cap into the housing.
5. Torque the brush cap (6) to 35 in. lb.
6. Repeat these steps for the opposite side.
Filter Replacement
1. Pull the old lter down from the housing with
your ngers.
2. Place the new lter (2) in the housing, tapered side up.
See Figure 14.
ELECTRIC VIBRATOR HEAD
SERVICE & MAINTENANCE
MPORTANTI
Service the vibrator head after every 50 hours of operation for
trouble-free running on the job.
When servicing, always replace the hex driver, the seals and
the bearings, or bushing for 750-D & 750-EH heads.
See Electric Vibrator Head Assembly Drawings & Parts Lists on
page 15.
All heads are equipped with seals at the flexible shaft end
and contain oil. The seals serve a double purpose; to keep the
oil in the head and to keep the grease from the flexible shaft
out of the head.
1. Hold the nose end in a vise and unscrew the end cap
counterclockwise with a chain wrench or a good pipe
wrench. See Figure 15.
Figure 15: End cap removal
2. Pull the eccentric rotor assembly out of the housing. If the
bearings are stuck and you have diculty removing them
from the housing, screw the end cap partly back into the
housing and bounce the head and cap down on a block
of wood in order to loosen the bearings from their seat,
then pull out the rotor assembly. See Figure 16.
Figure 16: Bearing Removal
OTE:N Hexagon driver has left hand threads.
3. Flush the rotor assembly and housing with solvent and
wipe all parts clean. Replace bearings, seals and hex
driver. Maintain concentric alignment of the hex driver
with respect to the rotor shaft. Rell with proper amount
of Wyco No. 514-O non-foaming vibrator oil. See Table
4. Apply Loctite 545 adhesive/sealant or equivalent to
threads on both ends of rotor.