WycoTool Hydraulic Paving Vibrators - Manual (Page 7)

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the most. The rule then can be read giving the
operating speed.
Wyco Tool Company
COULD CAUSE SERIOUS DAMAGE.
WHE EXCESSIVE TEMPERATURES
ARE E COU TERED, FOLLOW THE
PAVER MA UFACTURI G RECOM-
ME DATIO S TO REMEDY THE
SITUATIO .
Flow Rate
The flow rate of the hydraulic oil through the
vibrator directly affects the speed of the vibra-
tor. When the flow is increased or decreased
the vibrator speed increases or decreases,
respectively. Oil temperature, oil viscosity
and the condition of the vibrator can affect the
relationship between flow and vibrator speed.
Typical vibrator speed at 4 GPM is approxi-
mately 10,800 VPM and typical vibrator
speed at 3 GPM is approximately 8,100 VPM.
e) Trouble Shooting
To aid in trouble shooting the following tools
are available from Wyco Tool:
Hydraulic Test Kit
(Wyco PN 419850)
This kit can measure pressure and flow in
either the pressure or return line of the
vibrator. It mates with the standard vibrator
quick disconnects.
Vibrating Reed-Type Tachometer
(Wyco PN 419855)
This is a reed type tachometer that quickly
measures vibration speed when put in contact
with the rubber protective hose close to the
vibrator. When put in contact, the reed that
vibrates the most is the operating speed.
Slide Rule Tachometer
(Wyco PN 001000)
This is a less expensive alternative to the
tachometer above. It is slightly more
difficult to use and more fragile, but it will
provide an accurate reading. When put in
contact with the rubber protective hose near
the vibrator, a wire is extended until it deflects