PRONAR PWP900, Operator'S Manual, Page: 64 / 74

PRONAR PWP900 SECTION 5
5.6
5.4 HYDRAULIC SYSTEM OPERATION
DANGER
Before commencing whatever work on hydraulic system reduce the pressure in the
system.
DANGER
During work on hydraulic system, use the appropriate personal protection equipment i.e.
protective clothing, footwear, gloves and eye protection. Avoid contact of skin with oil.
Always adhere to the principle that the oil in the tedder hydraulic system and in the tractor
hydraulic system are of the same type. Application of different types of oil is not permitted.
The hydraulic system in a new tedder is filled with HL32 hydraulic oil.
ATTENTION
The condition of hydraulic system should be inspected regularly while using the
machine.
The hydraulic system should be completely tight sealed. Inspect the seals when hydraulic
ram cylinders are completely extended. If oil is found on hydraulic cylinder body, check origin
of leak. Minimum leaks are permissible with symptoms of "sweating", however in the event of
noticing leaks in the form of "droplets" stop using the machine until faults are remedied.
In the event oil leak is detected in hydraulic line connections, tighten the connections, and if
this does not remedy the problem, replace the leaking hydraulic line or connection. Always
exchange each mechanically damaged component. Also, pay attention to ensure that flexible
hydraulic lines are not fractured.
Flexible hydraulic lines should be replaced after 4 years of use.
Because of its composition the oil applied is not classified as a dangerous substance,
however long-term action on the skin or eyes may cause irritation. In the event of contact of
oil with skin wash the place of contact with water and soap. Do NOT apply organic solvents
(petrol, kerosene). Contaminated clothing should be changed to prevent access of oil to skin.
In the event of contact of oil with eye, rinse with large quantity of water and in the event of the