electrIc vIbrAtor HeAd ServIce & mAINteNANce
Installing or replacing vibrator head quick
disconnect fitting.
The Sure Speed motor is shipped with a Quick Dis-
connect Body (P.N. 113715 ) and a Core Plug (P.N.
764733). If the vibrator shaft assembly hasn't been
converted to quick disconnect fittings, the conver-
sion will have to be preformed before the shaft can
be connected to the Sure Speed motor.
1. Remove the protective cap from the motor end
of the vibrator shaft. Remove any dirt or corro-
sion from the threads.
2. Place the nylon core plug into the open end of
the core casing with the flange side up.
3. With a rubber mallet begin to tap the core plug
into the casing. Stop when the plug just reaches
the tip of the core.
4. Align the core with the hole in the core cap and
continue to tap the cap until the flange is resting
on the top edge of the casing.
5. Apply some oil to the casing threads and thread
the quick disconnect body onto the casing over
the core plug.
6. Tighten the quick disconnect body finger tight
and then an additional quarter turn with a pipe
wrench or channel lock pliers.
Service the vibrator head after every 50 hours
of operation to ensure trouble-free running on
the job.
When servicing, always replace hex driver, seals and
bearings (or bushing for 750-D & 750-EH heads).
(See drawings on pages 12 and 13.)
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 4.0.)
Form No. W160 02/10
FIGURE 4.0 − EnD CAP REMOVAL
2. Pull the eccentric rotor assembly out of the hous-
ing. If the bearings are stuck and you have diffi-
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 5.0.)
FIGURE 5.0 − BEARInG REMOVAL
nOTE: Hexagon driver has left-hand threads.
3. Flush rotor assembly and housing with solvent
and wipe all parts clean. Replace bearings, seals
and hex driver. Maintain concentric align-
ment of hex driver with respect to rotor shaft.
Refill with proper amount of Wyco No. 514-O
non-foaming vibrator oil. (See Table 3.0.) Apply
Loctite® 545 adhesive/sealant or equivalent to
threads on both ends of rotor.
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