Case 580SR Service Manual page 77

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SECTION 21 - TRANSMISSION 11
1.4 LUBRICATION
To ensure proper lubrication and operating temperatures it is most important that appropriate lubricants are
used and that the correct oil level is maintained.
Oil level checking
The oil level should be checked daily and corrected if necessary.
The oil level must be checked with the engine idling and with the transmission oil cold.
In this condition the oil level should fall between the maximum and minimum marks on the dipstick.
At normal operating temperature, (80 °C) the oil level will rise to 20 - 30 mm above the maximum mark on the
dipstick.
Do not overfill the transmission as this may result in oil breakdown due to excessive heat and aeration from the
churning action of the gears. Early breakdown of the oil will result in heavy sludge deposits that block oil ports
and build up on splines and bearings. Overfilling may also cause oil leaks.
Oil changes
An initial oil change and flush is recommended after the transmission is placed in actual service.
This change should be made at any time following 50 hours in service, but should not exceed 100 hours.
When changing the oil it is essential to renew the oil filter and clean out the suction strainer.
The object in draining the oil is to eliminate possible bearing surface abrasion and attendant wear. Minute par-
ticles of metal, the result of normal wear in service are deposited in and circulated with the oil. Oil changes are
best carried out when the transmission is thoroughly warm.
S WARNING
To prevent oil starvation and possible seizure of the transmission whilst towing the vehicle, it is imperative that
the propeller shafts are disconnected.
Failure to observe this precaution may result in extensive damage to the transmission.
Oil capacity: 18 litres
Suggested oil:
10W or 10W30 Grade mineral oils or automatic transmission fluids which meet at least one of the following
specifications are allowable for use in ambient temperatures of between -20 and 40 °C:
Akcela Nexplore MAT3525.