Dino lift DINO 180 T, Operation Instructions Manual, Page: 39 / 92

DINO 180T-1
39
HOLD- AND LOAD REGULATING VALVES
Functional check
1. Checking the outrigger cylinder holding valves with respect to leaks is made by lifting the unit up
with the outriggers and measuring, separately at each outrigger, chassis height from the ground. After a
few minutes, measure the height again. If the chassis has lowered itself the valves are leaking.
2. Check the tightness of the boom holding valve. Drive the boom into a position where it can be easily
measured. After a few minutes, measure again to see if the boom has moved.
3. Check the tightness of the telescope cylinder load regulating valve. Extend the telescope and measure
the stroke. Wait for a few minutes, and check if the telescope has retracted. (
Note : The boom should be
almost vertical).
4. Check the tightness of the platform stabilizing system. Load about 100 - 200 kg (200-400 lbs) onto
the platform and measure the height between platform rear edge and the ground. After a few minutes,
check that the height remains unchanged.
Service instructions
1. Dismantle the valve and clean it.
2. Check condition of O-rings and replace if necessary.
3. Reassemble the valves carefully
4. If necessary, completely renew the valve.
5. Do not change the valve adjustment settings
Support platform, boom and outriggers in a position, where load is not directed so that it influences the
structure or parts that should be repaired. Make sure that no cylinder is pressurized.