Trim system

Changing the sending unit

1. Lower the sterndrive to the full down position. Turn the helm full starboard. Using a 13 mm wrench, remove the trim sender holding bracket and the trim sender. Unplug the sender from the wiring harness.

3. Install the sending unit housing into the steering shaft on the transom shield. Rotate the sending unit slightly to align the drive coupling with the gear wheel. NOTE! Do not force the sending unit into the hole. This may damage the sending unit and/or the gear wheel.

Install the trim sender bracket and hold down screw. Finger tight only, do not tighten until all adjustments have been made.

2. Plug the new sending unit into the wiring harness. Align the white notch on the drive coupling with the white notch on the sending unit housing.

4. Lower the sterndrive to its bottom position. Ensure the sterndrive is at its lowest position, place a 15 kg load on the rear of the sterndrive.

5. -4 should be shown in the instrument window for a 12º transom angle. Move the sending unit in either direction until the correct number is displayed on the trim gauge. Other transom angle settings are as follows:

Changing the trim system gear rack

10°- 2 11°- 3 12°- 4 13°- 5 14°- 6 15°- 7

1. Remove the damaged gear rack by removing the screw.

6. Tighten the trim sender bracket hold down screw. Be sure the sending unit does not move when the bracket is tightened.

2. Bend the gear rack up slightly to clear the nut and pull it out from the steering helmet.

3.

6. Install the screw and carefully tighten.

NOTE! It is recommended that a new screw be used whenever the gear rack is removed.

WARNING! Do not overtighten the screw. Use extreme caution to prevent stripping the threads from the screw.

7. Lower the sterndrive to its bottom position. Ensure the sterndrive is at its lowest position, place a 15 kg load on the rear of the sterndrive.

8. -4 should be shown in the instrument window for a 12º transom angle. Move the sending unit in either direction until the correct number is displayed on the trim gauge. Other transom angle settings are as follows:

Changing the trim system gear wheel

1. Remove the sterndrive according to the section installation and removal.

10°- 2

11°- 3

12°- 4

13°- 5

14°- 6

15°- 7

2. Pull the steering helmet aft far enough to clear the gear wheel. Turn the gear wheel so that the digital trim instrument indicates -4.

9. Tighten the trim sender bracket hold down screw. Be sure the sending unit does not move when the bracket is tightened.

3. Pull the gear wheel straight down. There will be some resistance because of the retaining pawl in the bushing. Note the position of the drive end of the shaft when removing it. This will ease installation of the new shaft in the same position.

NOTE! Always use a new O-ring whenever the gear wheel is removed.

4. Grease the new gear wheel shaft and O-ring liberally with Volvo Penta Propeller shaft grease 828250-1. Install the new gear wheel with the marked tooth pointing starboard just enough aft to be visible from under the steering fork. If the shaft will not fit easily into place, rotate the gear wheel slightly in either direction to engage the gear wheel shaft and the trim sender coupling. Be sure the gear is completely seated before trying to engage the gear rack on the steering helmet.

6. Push the steering helmet into position with the marked tooth of the gear wheel engaging the first notch of the gear rack. Push the steering helmet as far forward as possible. Install the sterndrive according to the installation section earlier in this chapter. Check the trim adjustment according to adjusting the trim instrument section.

5. Position the gear wheel as shown.

7. -4 should be shown in the instrument window for a 12º transom angle. Move the sending unit in either direction until the correct number is displayed on the trim gauge. Other transom angle settings are as follows:

8. After all adjustments are made, tighten the trim sender bracket hold down screw. Be sure the sending unit does not move when the bracket is tightened.

The power trim pump

The parts illustrated are those available as replacement parts or complete assemblies. The following instructions cover the replacement of parts making up the trim pump unit.

1Motor assembly

2Motor, incl. mounting studs

3Coupling

4O-ring

5Adapter and basic pump assembly1)

6Filter

7Reservoir assembly

8Reservoir seal

9Reservoir cap

10Reservoir

11,12,13 Screw, spacer, O-ring assy

14Thermal relief valve1)

15High pressure relief valve1)

16Low pressure relief valve1)

A B C Original factory fitted valve assy

1) Non-serviceable part. Replace as complete unit.

Note! Do not disassemble the valve or adapter assemblies, as this will disturb the factory settings and may cause pump malfunction.

WARNING! Use great care when working with this hydraulic system. Be sure your work area is clean. Do not allow dirt to enter the system. Use lint-free rags. Fill with clean recommended oil only.