Steering - Volvo Penta D4 Operator's Manual

Steering

The DPH/R drive is equipped with a fully hydraulic steering system with additional power assistance to allow stee-
ring without the engine running.
Steering system. IMPORTANT !
Follow the directions below to ensure problem free
and safe steering:
Check the steering system oil level every two weeks
so that any changes in level are discovered. Check oil
level at the helm pump. Min level is 12 mm below lo-
wer edge of the fill hole. If the boat has a flybridge, do
NOT open lower helm pump. Only check the oil level
at the upper helm station. Normally, the oil level will
not change, "oil consumption" in one year is negligible.
A drop in level is a probable indication that there is a
leak or that there are air in the system. The leak must
be located and rectified immediately. Contact your
Volvo Penta service centre for repair.
IMPORTANT! Be very careful with cleanliness
when working with the steering system hydrau-
lics. Clean components thoroughly on outside
before disassembly. The work area should be
clean and well lit.
78
12 mm
(1/2")
The steering system is filled with ATF and does not
normally require changing. As long as the fluid is red in
colour and does not contain any visible contaminants,
it need not be changed. If the fluid has started to turn
black or if there are any visible contaminants, it must
be changed. The fluid must also be purged from air if
the steering system has been opened for service.
WARNING! Use only Volvo Penta recommended
fluid and grade. Never top up the steering system
with fluid of unknown grade. Never use brake fluid
or hydraulic oil. Any non-appproved fluid may
cause irreparable damage, loss of steering and
cancellation of warranty. The incorrect fluid can
also result in damage to the components used in
the steering system.