Kristian Ferrell
If your boat's trim isn't working, it could be down to a number of issues. A common problem is a leak in the system, which can cause the engine to slip down when in the raised position or not raise at all. It could also be an issue with the hydraulic pump or valve body assembly. If the trim button isn't making a sound, there may be no power going into it.
| Characteristics | Values |
|---|---|
| Engine won't raise or lower | Problem with the hydraulic pump or valve body assembly |
| Engine slips down when in the raised position | Problem with the hydraulic pump or valve body assembly |
| Engine won't stay trimmed | Problem with the hydraulic pump or valve body assembly |
| No sound from trim relays/solenoids | Issue with the trim button or power supply |
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What You'll Learn
The trim button might be broken or there's no power going to it
If your boat's trim button is not working, the most likely issue is that the trim button itself is broken or there is no power going into the trim button. If you do not hear the trim relays/solenoids clicking when you hit trim up or down, this is a good indication that the button is not working.
If the trim motor works fine but the engine won't raise or lower, or won't stay trimmed, the problem is likely with a leak in the system or with the hydraulic pump or valve body assembly. You can start by checking the hydraulic fluid reservoir level. As hydraulic fluid doesn't evaporate, a low fluid level indicates a leak in the system hoses, fittings or seals. You should also check the reservoir for the presence of water, which can cause issues even if the system appears to be operating normally. A common place for leaks to occur is the tilt and trim ram seals.
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There could be a leak in the system
If the tilt and trim motor works fine, but the engine won't raise or lower, slips down when in the raised position, or won't stay trimmed, there could be a leak in the system.
To check for a leak, start by checking the hydraulic fluid reservoir level. Hydraulic fluid doesn't evaporate, so a low fluid level indicates a leak in the system hoses, fittings, or seals. You should also check the reservoir for the presence of water, which can cause issues even if the system appears to be operating normally. A common place for leaks to occur is the tilt and trim ram seals.
If the fluid level is adequate, the problem is most likely with the hydraulic pump. A low fluid level can also indicate a possible leak at the seals, as can visual fluid around the piston assembly. Repairs typically involve removal and rebuilding the pump or replacing it at a qualified repair facility.
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The problem could be with the hydraulic pump or valve body assembly
If your boat's trim motor is working fine but the engine won't raise or lower, or it slips down when in the raised position, the problem could be with the hydraulic pump or valve body assembly.
Start by checking the hydraulic fluid reservoir level. If the level is low, this indicates a leak in the system hoses, fittings, or seals. You should also check the reservoir for the presence of water, which can cause issues even if the system appears to be working normally.
If the fluid level is adequate, the problem is most likely with the hydraulic pump. At this point, repairs will typically involve removal and rebuilding of the pump or replacing it at a qualified repair facility.
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The hydraulic fluid reservoir level might be low
If your boat's trim isn't working, it could be that the hydraulic fluid reservoir level is low. This is a common issue and can be caused by a leak in the system hoses, fittings or seals.
To check if this is the problem, start by inspecting the hydraulic fluid reservoir level. If the level is low, it indicates a leak in the system. Hydraulic fluid doesn't evaporate, so a low fluid level is a sure sign of a leak. While checking the reservoir, also look for the presence of water, which can cause issues even if the system appears to be operating normally.
If you find a leak, repairs will typically involve removing and rebuilding the pump or replacing it at a qualified repair facility.
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There could be water in the reservoir
If your boat's trim isn't working, it could be because there's water in the reservoir. Water in the reservoir can cause a lot of issues, even if the system appears to be operating normally.
To check for water in the reservoir, you'll need to locate the hydraulic fluid reservoir. The reservoir is part of the hydraulic pump and valve body assembly, which controls the tilt and trim of the engine. If the trim motor is working fine but the engine won't raise or lower, or slips down when in the raised position, this could indicate an issue with the hydraulic pump or valve body assembly.
When checking the hydraulic fluid reservoir, also take note of the fluid level. Hydraulic fluid doesn't evaporate, so if the level is low, it indicates a leak in the system hoses, fittings, or seals. Leaks can also allow water to enter the system, so it's important to address any leaks and keep the reservoir free of water to ensure the trim system functions properly.
If you find water in the reservoir, it's important to address the issue promptly. Repairs may involve removing and rebuilding the pump or replacing it at a qualified repair facility. It's also crucial to identify and fix any leaks to prevent further issues and ensure the safe and proper functioning of your boat's trim system.
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Frequently asked questions
If the trim motor works but the engine won't raise or lower, the problem is likely with a leak in the system. Check the hydraulic fluid reservoir level. If the level is adequate, the problem is likely with the hydraulic pump.
Hydraulic fluid doesn't evaporate, so a low fluid level indicates a leak in the system. Check for visual fluid around the piston assembly and the presence of water in the reservoir.
Repairs typically involve removal and rebuilding the pump or replacing it at a qualified repair facility.
If the trim relays/solenoids aren't clicking when you hit trim up or down, the issue is likely with the trim button itself or a lack of power going into the button.
You may need to replace the trim button or check the power supply.
