Reverse Gear - Volvo Penta D3 Operator's Manual

Maintenance. Reverse gear

Reverse gear

The HS25A/HS45A/HS63IV reverse gear is hydraulic, which means that ahead/astern engagement and disen-
gagement is hydraulically activated. The reverse gear lubrication system has an oil filter and oil cooler. The re-
verse gears is equipped with solenoid valves for electronically controlled shifting.
IMPORTANT! Volvo Penta recommends the installation of a seawater filter to guarantee the proper cool-
ant water flow to the engine and reverse gear. Contaminants in the seawater will otherwise foul the reverse
gear radiator and other cooling system components.
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Oil level
Start the engine and let it run a couple of minutes.
Stopp the engine and remove the dipstick by turning
it anti clockwise. Dry off the dipstick and reinstall it
in the reverse gear, without screwing it into place.
Remove the oil dipstick again and check the oil level.
The correct oil level is inside the marked area.
If necessary, top the oil up through the dipstick hole.
Please refer to the "Technical Data" chapter for oil
grades and volume.
IMPORTANT! Never over-fill the revers gear.
The oil level must always be inside or at the rec-
ommended levels.
Oil change and filter change
1. Clean around the lid, so that there is no risk that
dirt could fall down into the filter housing.
2. Undo screw (1) with a 6 mm Allen key. Remove lid
(2). Replace and oil in the new O-rings in the lid.
3. Lift up the filter (3).
4. Suck up the oil with an oil drain pump, via the oil
1 filter housing. Connect hose to the suction pipe (4)
at the bottom of the housing.
5. Measure up the correct quantity of oil and fill the
reverse gear with the oil via the oil filter housing.
Please refer to the "Technical Data" chapter for oil
grades and volume.
IMPORTANT! Never over-fill the reverse
gear.
6. Install the new filter (3) in the filter housing.
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7. Install the lid. Tightening torque 5-8 Nm.
8. Put the control lever in neutral. Start and run the
engine at 1500 rpm for a few minutes to ensure
that the reverse gear oil cooler is filled with oil.
9. Stop the engine and check the oil level. Top up as
necessary.
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