Warren Elevating 5
th
Wheel
34
Final Locking Test
When you are sure the jaws are locking properly, test coupling and locking at various angles up to
45 degrees, left and right. If this final test is successful, the unit is ready for service.
Check Raising and Lowering
Raise the trailer by engaging the PTO, then by operating the hydraulic pump. Be sure the 5
th
wheel raises and lowers smoothly.
Final Systems Test
While the trailer is being lifted, re-check the hydraulic and pneumatic systems, and the operation
of the 5
th
wheel, the pump and PTO
Maintenance
As with any mechanical equipment, maintenance and lubrication are very important for long
service life.
Before putting the unit into daily operation, record the model number and serial number in a
permanent file.
Lubrication Maintenance
There are a number of grease fittings located throughout the 5
th
wheel assembly. It is easier to see
the fittings when the unit is new.
CAUTION:
Failure to provide an adequate supply of grease will result in premature
wear and damage. This is especially true on the cross shafts that carry heavy loads. A
lack of lubrication will void the warranty.
Lubrication recommendation: We recommend using excellent quality grease for longest service
life.
For normal operations, we recommend that you grease the unit monthly. In extreme duty
applications, where salt or sand may be a problem, you should grease the unit more often.
You may also want to consider the use of automatic lubrication systems as supplied by various
manufacturers.
Hydraulic Maintenance
Monthly: Check the oil level in the tank. With the unit in a fully lowered position and the engine
off, remove the filler cap(s). The oil level should be about 2 inch below the cylinder top.
Carefully clean the filler vent cap and vent before replacing.
Monthly: Check all of the hoses and fittings for leaks, cracks or deterioration. Replace as needed.
Yearly: Drain all oil from system. Remove oil filter. Replace filter with a new filter element, then
refill tank and cylinder(s) with new oil.
