9/2/90
HV25
MAINTENANCE PROCEDURES
MAINTENANCE PROCEDURES
MAINTENANCE PROCEDURES
MAINTENANCE PROCEDURES
MAINTENANCE PROCEDURES
HVG VERTICAL LIFT GATE OPERATOR
HVG VERTICAL LIFT GATE OPERATOR
HVG VERTICAL LIFT GATE OPERATOR
HVG VERTICAL LIFT GATE OPERATOR
HVG VERTICAL LIFT GATE OPERATOR
After proper installation of the vertical lift gate operator, very little maintenance will be required to insure long
and trouble free operation.
MONTHLY:
1. The primary maintenance procedure will be to maintain the drive chain tension. The tension can easily be
checked: Operate the gate to the full open position. Grasp the chain that connects the bottom of the bogie to the
bottom of the weight cage and pull it outward. The chain should always feel somewhat taut, it should never be
loose. This is especially important when the operator is new.
A. To expose the chain tension adjustment area, remove the middle access cover (about three feet above
the ground) and raise the gate to full open.
B. Locate the two threaded rods connected to the top of the weight cage. Loosen the locking nuts on top
of the cage and tighten the nuts on the top inside of the cage. Be sure to tighten the nuts an equal amount
in order to keep the load balanced between the two chains. Tighten the lock nuts.
SEMI-ANNUALLY:
1. Each king post has four bearings with grease fittings. These should be greased semi-annually.
2. Check the balancing cable for correct tension. They should neither sag nor greatly compress the spring at the
top of each post. Also inspect the cables for fraying or snagging, especially where they lay on the sheaves when
the gate is closed.
3. Inspect the cable sheaves to make certain they rotate freely.
4. Check the oil level in the reservoir at the hydraulic pump. It should always be at least 3/4 full. Generally the
oil level should not change. A change would indicate a leaky hose, a serious problem that must be found and
corrected.
5. Apply a light oil to all the chains.
