Perkins D6500 Installation & Operational Manual page 31

Lifter slams down to the ground or comes down too quickly
On the way down, the lifter can get ahead of the oil and free fall. Check that the adjustable flow control
is mounted to the bottom port of the cylinder, with the arrow pointed away from the cylinder, and that
the valve is adjusted properly. Try ¼ turn adjustments until the lifter returns to ground level smoothly.
Lifter drifts out of position when not in use
Make sure the PO Check valve is installed. If it is and the lifter still drifts, remove the PO check and
remove and clean the cartridge. If the valve is damaged, replace it.
If the problem does not seem to be the PO check, the hand valve may have internal leakage. Replace
the hand valve seals and/or spool as needed.
If the problem persists, then the cylinder may be leaking internally. Check for internal leakage by
running the lifter up and holding the hand valve while reading a pressure gage. If the pressure falls, then
the actuator is leaking internally and should be rebuilt with a new seal kit.
Lifter is in good condition, latch is adjusted, but lifter still breaks carts
In this case, the lifter is most likely being operated too fast, or the carts are overweight. Excessively
hard shaking of the carts by the operators can also lead to cart damage. Train your operators to
operate the lifters properly.
Perkins Manufacturing Company
Creators of the TuckAway
www.perkinsmfg.com
Cart Lifter
®
800-882-5292 Revised: 5/7/2019
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