Meyer's M3230 Tandem, Instruction And Parts Book

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Open and Closed Center Hydraulic Systems
•
Most late model tractors use a Closed Center hydraulic system with a variable displacement pump which
only pumps oil as required. This system is commonly CCLS (Closed Center Load Sensing), also known
as PFC (Pressure and Flow Compensated).
•
Other tractors may have an Open Center hydraulic system with a fixed displacement pump which pumps oil
continuously. This type of system typically does not have adjustable flow control from the tractor cab.
Spreader Setup
See Figure 3.
•
The spreader, with its standard Manual Flow Control
system, may be used for all types of hydraulic
systems by opening or closing the ball valve located
on the return port of the adjustable flow control valve.
•
If your tractor does not have adjustable flow control,
the ball valve must be open, allowing excess flow to
return to the tractor. Apron speed should be regulated
using the equipped “twist hose”.
•
If your tractor has adjustable flow control, the ball
valve should be closed. You may move the flow
control valve to max speed and use the tension screw
to lock it in place. You may also opt to remove the
“twist hose” as hydraulic flow / apron speed can
already be adjusted from the tractor.
•
A secondary flow control valve on the spreader
regulates apron speed and limits the flow to 7.5 GPM.
Excess flow is returned to the tractor.
TRACTOR HOOKUP
1. SLOWLY back up tractor to spreader and line up draw pin holes.
2. Shift tractor to neutral or park and set the brakes.
3.
Hook the spreader hitch to the tractor drawbar with 1 3/8” secured hitch pin.
4. Raise the jack off the ground. Remove the jack hub pin and rotate the jack to the horizontal position or move to
secondary storage location and secure with the pin.
5. Connect the PTO drive shaft to the tractor PTO output shaft and be sure it is locked to the tractor PTO shaft.
6. Connect the electrical plug for the lights to a receptacle on the tractor.
7.
Run the “twist hose” for controlling apron speed to the tractor cab where it can be operated.
8. Connect the hydraulic hoses from the spreader to paired remote ports on the tractor.
Apron Drive
– (2x) 8M3K Ø1/2” ID Hoses Hydraulic Gate – (2x) 6M3K Ø3/8” ID Hoses
NOTICE! The spreader apron circuit has a check valve in it so that the apron may not be operated in the
wrong direction. If the hoses are reversed, the apron will not operate and the hoses should be switched.
FIGURE 3. APRON FLOW CONTROL