Bayne THINLINE 1900-0571, Operation And Parts Manual, Page: 7 / 39

Document Number: 1900-0571 Issue Date: 05/21/13 Revision No: 001 Page: 7 of 39
III. Adjusting the GRL control valve :
The clamping pressure and speed of the
THINLINE
®
GRL
lifter’s arms are
controlled by the GRL control valve mounted to the lifter.
It is very important to make sure the hydraulic oil is at operating
temperature, and the flow rate and relief valve settings have been
properly adjusted before setting the GRL control valve pressures.
The proper flow rate and relief settings are 2 gpm at 1800 psi.
The amount of pressure the GRL arms use to clamp the container is controlled
with a pressure relief valve in the GRL control valve. This valve is preset at the
factory to operate with most containers. However, if the lifter seems to be
crushing or loosing grip on your specific containers, refer to figure I-3 while
performing the following steps to properly adjust the clamping pressure.
1. Loosen the lock nut on the pressure relief valve in the GRL control valve.
2. If the lifter is crushing the waste container, turn the adjustment screw counter-
clockwise 1/4 turn. If the lifter is loosing grip on the waste container, turn the
adjustment screw clockwise 1/4 turn.
3. Repeat clamping and dumping the container, making necessary adjustments to the
pressure relief valve in 1/4 turn increments until the lifter securely holds the
container without crushing it.
4. Tighten the lock nut on the pressure relief valve to secure the correct pressure
setting.
figure I-3