Checking Hydraulic System Tightness - PRONAR T683 Operator's Manual

SECTION 5
DANGER
Do NOT tip trailer with unreliable hydraulic tipping system.
Do not use the trailer if the support hydraulic system is out of order.
Do NOT use the trailer if hydraulic brake system is unreliable.
The hydraulic system is under high pressure when operating.
5.4.2

CHECKING HYDRAULIC SYSTEM TIGHTNESS

Required maintenance actions
Hitch trailer to tractor.
Connect all hydraulic system conduits according to maintenance instructions.
Clean fittings and cylinders (cylinders for tipping, supporting, load box wall
unlocking system and possibly hydraulic brake cylinders).
Conduct test tipping of load box sideways and backwards.
Press tractor brake pedal several times
Check operation of the hydraulic load box wall unlocking system (option).
Check tightness of hydraulic system, inspect cylinders and hydraulic conduits.
If leaks appear at connections then tighten the connections.
Checking tightness:
If oil leak is detected on hydraulic cylinder body, ascertain origin of leak. Inspect hydraulic
seals when hydraulic cylinder is completely extended. Minimum leaks are permissible with
symptoms of "sweating", however in the event of noticing leaks in the form of "droplets" stop
using the trailer until faults are remedied. If unreliability is evident in brake cylinders do NOT
use trailer with damaged system until faults are remedied.
If the trailer is equipped with hydraulic brake system or with
pneumatic-hydraulic brake system.
• after the first week of use,
• every 12 months of use.
5.25
Pronar T683