Page 55 - QR CIMAR LASER SCREED

HYDRAULIC OPERATION

PUMP
This is a load sensing pump that will provide the required flow to run the functions of the machine.
HYDRAULIC TANK
This is the reservoir from which the pumps draw their hydraulic oil supply. The oil is filtered as it returns
to the tank.
WHEEL MOTORS
Two separate hydraulic motors. Each drive one of the machine’s two wheels.
VIBRATOR MOTOR
This motor turns two eccentric weights inside the vibrator gear box which provides vibration to the
vibrator shoe.
LIFT CYLINDER
The cylinder lifts and lowers the screed head.
SIDE LOCK CYLINDER
This cylinder allows the upper and lower frames of the machine to be locked together.
PROPEL COUNTERBALANCE BYPASS VALVE/FREE WHEEL
When the engine is turned off, hydraulic pressure through the counterbalance valve will make it difficult
to move the machine around. In that case, this bypass valve can be opened, thereby releasing
pressure in the drive system and allowing the wheels to turn more easily. There are (2) Propel
Counterbalance Bypass valves, one for the left wheel and the other for the right. They are activated by
the Free Wheel switches on the dash. If electrical power is disabled, the valves are activated via the
manual overrides on top of the cartridges.
KICKSTAND CYLINDER
The cylinder lifts and lowers the kickstand.
VIBRATOR SPEED ADJUSTMENT VALVE
This valve adjusts the speed of the vibrator to match the slump of the concrete being leveled.

Vibrator Motor
1 turn in* ≈ 3900 rpm
3/4 turn in* ≈ 4500 rpm -Factory Setting
5/8 turn in* ≈ 5100 rpm
1/2 turn in* ≈ 5500 rpm
Recommended maximum speed of 5500 rpm, which is ≈ 1/2 turn in*.
* Turn in Clockwise from the top.

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