When a new high amplitude relief valve is installed,
check the pressure setting again. If it is correct, stop
the engine and remove all tooling.
If continued high pressure operation is seen, a
problem may exist with the vibratory drive
This main relief pressure should be checked while
running the vibratory system. For this reason, it
is recommended that the drum be placed on tires
to simulate an uncompacted soil condition. The
hydraulic oil temperature should be 38° C (100° F).
Make sure the parking brake is applied, and the propel
control lever is in the STOP position.
Vibratory Flushing Valve.
(1) Low amplitude test port.
Connect a 60 000 kPa (8700 psi) pressure gauge to test
(2) Vibratory control switch. (3) Vibratory selector switch.
Move vibratory selector switch (3) to the LOW