Drive
The propulsion unit has an electronically controlled
hydraulic clutch. Two soleniod valves, primary (for-
ward gear) and secondary (reverse gear), is controlled
by electrical signals from the operator’s control levers.
The propulsion unit's lubrication system is equipped
with an oil filter and an oil cooler.
The propulsion unit is protected against galvanic cor-
rosion. This protection consists of sacrificial anodes.
An active corrosion protection, ACP, is optional. Faulty
electrical installation can also cause the breakdown of
the galvanic protection. Damage due to electrolytic
corrosion occurs rapidly and is often extensive. For
further information please refer to
Mainte-
nance page 84
.
Oil level, checking and topping up
IMPORTANT!
The propulsion unit must be shut down for at least 12
hours before a correct oil level check can be done.
Check the oil level every day before starting the
engine.
Open the oil filler cap (
1
) slowly so that any overpres-
sure is released. Remove the dipstick (
2
) by turning it
anti clockwise. Dry off the dipstick and reinstall it in the
propulsion unit, screw it into place. Remove the oil dip-
stick again and check the oil level. The correct oil level
is inside the marked area.
If necessary, top up the oil through the filling hole (
1
).
For oil grades and volume, please refer to
Technical
Data page 115
.
While checking the oil level, ensure there are no signs
of water dilution. The oil should have a golden brown
hue. If the oil is thin and greyish it is probable water
diluted. If so, always let the propulsion unit be checked
by a Volvo Penta workshop.
1
2
P0003981
Maintenance
90
7748921 04-2008
Summary of Contents for D4-260
Page 1: ...OPERATOR S MANUAL Volvo Penta IPS ...
Page 124: ...7748921 English 04 2008 ...
