Page 1-20 MAXX 450D/470D/Diesel
HydraMaster Corporation
Diverter Valve - Machines that are equipped with a diverter valve may need adjust-
ment after the machine has been installed.
Prior to running the machine, perform the following steps:
1) Locate the actuator connected to the
diverter valve arm which is at the top
left of the machine U-bracket, near the
rear of the machine. See Figure 1-4.
2) The actuator shaft is connected to the
diverter valve arm. Pull the actuator
shaft forward and listen to hear if the
poppet seals against the seat in the
diverter valve. Push the actuator shaft
back and listen to see if the poppet seals
against the seat in the diverter valve.
If the poppet seats in both directions, the the diverter actuator is in proper
adjustment.
If the poppet does not seat in one or both directions the valve is out of
adjustment. Perform the following steps to adjust the diverter actuator
shaft.
3) The end of the actuator shaft is threaded into the diverter arm and is
secured into position with a back-up nut. This nut must be loosened to
allow adjustment.
4) Loosen the actuator back-up nut. This will allow you to rotate the
actuator shaft clockwise or counter-clockwise. Rotate the actuator shaft
one half turn at a time. Then pull the actuator shaft forward and back.
Listen to hear if the poppet seals in the seat of the diverter valve. Repeat
this step until the diverter poppet seals in both directions. See Figure 1.
5) Apply red Loctite on the thread of the actuator shaft. Re-tighten the
back-up nut.
6) Recheck the adjustment. Move the actuator shaft forward and back.
Listen to hear if the diverter poppet seals in both directions.
The diverter is now properly adjusted.
Figure 1-4 Actuator Location
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