Volvo KAD44P, Instruction Book

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57
DPX Hydraulic pump Oil level
Check with the engine(s) idling. The level should be
between MAX and MIN markings on the dipstick.
NOTE! The level is slightly higher with the engine
stopped. Fill with ATF. For ATF grade, see Technical
data.
DPX Hydraulic circuits Venting
If the steering system hydraulic circuit has been re-
moved or dismantled, the system must be vented.
Venting is easier if you have an assistant.
WARNING! Be extremely careful that hands,
clothes, hair, necklaces and tools do not come
into contact with engine drive belts or pulleys.
Fill the system. Start the engine(s). The steering
system engine circuit is automatically vented when
the engines have been running for 2–3 minutes.
Other parts of the system are vented as follows: Turn
the wheel 2–3 times port and starboard to full lock.
Check the oil level as the wheel is being turned and
top up as necessary. The oil level can drop rapidly
when the wheel is turned. Be ready to top up the oil
immediately so that no air is sucked into the system.
Check the oil level one last time with the dipstick and
top up as necessary. Check that there are no leaks
before running, particularly if the system has been
dismantled. Also check that all connections have
been tightened properly.