PRONAR PT512 Operator's Manual page 71

CHAPTER 4
Check all the trailer's lubrication points; if necessary, lubricate the machine as
needed according to recommendations provided in chapter 5.
Check if the nuts and bolts fixing the wheels and drawbar are properly
tightened.
Drain the air reservoir of the braking system.
Ensure that the pneumatic, hydraulic and electric connections in a tractor
conform to the requirements; if not, the trailer should not be hitched to the
tractor.
Adjust the height of the drawbar to the top tractor hitch.
Test operation
If all the above checks have been performed and there are no doubts as to the trailer's
technical condition, it can be hitched to a tractor. Start the tractor, check all systems and test
run the trailer without load (no load in the loading case). It is recommended that the
inspection is carried out by two persons – one of them should always remain in the tractor
operator's cab. Test start should be carried out according to the sequence presented below.
Attach the trailer to an appropriate hitch on a tractor.
Connect braking, electrical and hydraulic system lines and cables.
Lift the support to the transport position.
Switch on individual lights and check correct operation of the electrical system.
Switch the hydraulic tipping system valve to position "O". Carry out test tipping
of the loading case backwards and sideways.
When moving off, check if the main brake operates correctly.
Test drive the trailer.
TIP
Service operation: hitching or disconnecting the trailer, drawbar adjustment, tipping the
loading case etc. are described in detail in further parts of the Operator's Manual in
chapters 4 and 5.
A detailed description can be found in chapter 5.
4.3
Pronar PT512