14
Knowhow is the difference
Periodic maintenance and inspection
Wheel Dolly WD 1600 (1600 kg)
Model WD 1600 from 01-01-2018 and later
Only persons certified in professional repair and maintenance of hydraulic equipment may perform the
following risk assessment and annual maintenance of Compac wheel dolly.
Use only original parts from Compac.
Risk assessment for the wheel dolly
–
annual inspection or in case of malfunction.
1. Identify wheel dolly
(Confirm capacity / year and month of manufacture)
Drawings with spare part numbers are available for current and older types on our website:
www.compac.dk, where you will find more information under: service and the section on spare parts.
If the products are not from the current assortment (catalogue models), please see under “
Old
models”.
For these, too, only original parts from Compac should be used, to maintain safe and reliable operation of
the product.
2. Test equipment
Use the following to make a risk assessment.
A wheel with a tare weight of 1,600 kg. An ideal setup is a wheel that is hanging vertically and standing on
the floor, hanging from an authorised crane, where the wheel is secured against falling/rolling forward,
backwards or sideways. In case of malfunction of the wheel dolly during testing, the wheel is secured
against causing injury or material damage.
3. Visual inspection
Check that the oil level in the oil tank is correct.
Action 3A: The correct amount of oil is 60 mm, measured from the bottom
of the oil tank. Never overfill the oil tank. To fill oil in the double-acting
cylinder, lift the front cover on the change-over valve, where the filling
plug is located at the top of the tank. Use the pump rod to pump the oil
into the cylinder and to get any air out of the system. Make sure to pump
the frame out into the widest position and then back to the narrowest
position before filling, and fill the correct amount of oil.
Replace the oil plug and the front cover, and dry the area with a clean cloth before use.
Use only hydraulic oil Castrol Hyspin AWS 22 or similar with the same specifications.
Do not use brake fluid, motor oil or the like, as these may damage the dolly
’s internal components.
Check of retaining rings and bolts
Action B: If a retaining ring or bolt is missing, rusty or not 100% intact: clean the spot where the retaining
ring / bolt was located and replace the ring with a new one.
Is there any visible leakage of oil from the wheel dolly?
Action 3C: Place the wheel dolly under the test wheel and look for leaks by placing the wheel dolly under
pressure.
Look for leaks in the cylinder, pump and hydraulic pipes and hoses. If leaks are found, replace the defective
parts with new original parts.
Is there any visible rust?
Action 3D: In case of visible rust, strip the damaged parts so it is possible to determine whether the rust has
reduced the strength of the affected parts. If so, replace the part with a new part.
Before installing the new part, make sure the part has been lubricated or that the surface coating of the part
is intact.
Are there any visible cracks in the welding?
Action 3E: If the wheel dolly has visible cracks in the structure or welds, the dolly must not be used until the
error is properly remedied. If it is possible to replace the part, do so before use.
60 mm
