WycoTool Hydraulic Paving Vibrators - Manual (Page 17)

15
Wyco Tool Company
15
Seals
1) Seal Removal
It may be possible to remove the hydraulic
motor seal assembly without removing the
hydraulic motor from the vibrator assembly.
This procedure is described below. In the
event that it doesn't work, proceed to
Section e.
With the square head housing (1) removed
from the vibrator assembly, reach into the
motor housing with snap ring pliers and
remove the retaining ring (see drawing #
419747). The seal assembly may be
removed by connecting the return line
hydraulic hose (16) (largest hose) to a
100-psi pressure regulated air supply.
I JURY MAY RESULT FROM
IMPROPER REMOVAL OF SEAL.
FOLLOW THESE I STRUCTIO S
CAREFULLY.
Shut off the air supply with a quick opening
valve. Use an appropriate quick disconnect or
threaded connector to attach the air supply to
the return line (largest of the two hoses). Hold
the open end of the motor housing firmly
against the floor or other hard surface in case
the seal breaks free suddenly. Quickly open
the valve to dislodge the seal from its seat. If
the seal does not come out proceed to Section
e for information on how to remove the motor
for seal removal and closer inspection.
. 2) Seal Replacement
Place a tapered guide over the hydraulic motor
(14) shaft (Wyco tool part # 419754).
Assembly without the tapered guide could tear
the seal lip and cause leakage.
Lubricate the seal lip and O-ring with STP or
clean hydraulic oil and press the seal assembly
into the motor. Be sure that the lip end of the
seal faces toward the motor. Replace the
retaining ring and return to Section c6 if
bearings have already been replaced, otherwise
return to Section c2.
WARNING!
! !