Volvo Trim Pump

[gregmercer]

I bought a 1993 Wellcraft excel with a Volvo aq151, 4 cylinder, I/O a few months ago and when I went to buy it the trim worked perfectly. When I got home, a few days later I noticed all of the trim pump oil on the floor of the boat. I tried filling the resivour up with oil again, but now it dosen't work. It is stuck in the up position. Any ideas? Where should I start? It makes a clicking noise when I hit the trim down button and the voltage drops a lot. If I hold the button down for a while it makes kind of a gulping noise. <br /><br />Please help! I have found everyone on this forum so helpful! Thanks!<br /><br />Greg

 

[tashasdaddy]

Re: Volvo Trim Pump

bump

 

[rob935]

Re: Volvo Trim Pump

im no expert but sounds like you have an air lock in the hydraulics along with the leak in the first instance, you will need proper advice on how to tackle bleeding the air lock or if you know someone who works with hydraulics they will have it sorted in a matter of minutes...sorry i cant be of more assistance.

 

[gregmercer]

Re: Volvo Trim Pump

I'm pretty sure I have a 290 stern drive, but the sticker is worn off and I can't read it.<br /><br />Also - the motor doesn't make a noise when I press the button. <br /><br />I'm really anxious to get this to work so any help or tests I could do or anything is greatly apriciated!<br /><br />Thanks!!<br /><br />Greg

 

[Don S]

Re: Volvo Trim Pump

Here is a drive chart to help determine which type drive you have.<br /> Volvo drive ID Chart <br /><br />Also need to know which style trim pump you have. Left or right?<br /><br />

 

[gregmercer]

Re: Volvo Trim Pump

I have the one on the right, the later model. I either have the aq290 or the sp drive, I'll have to check when I get home.<br /><br />Don S - Thanks a lot for your help. I see you post answers to a lot of volvo questions. Thats real nice of you to offer a free help like that. You the man!<br /><br />Greg

 

[Don S]

Re: Volvo Trim Pump

About the only thing you can do is get your DVM out and start checking voltage and find out where it stops. Did you check the circuit breaker/or fuse?<br /><br />

 

[gregmercer]

Re: Volvo Trim Pump

I pulled apart the connection right before the trim motor and it gets power there, 12.5 volts. Yet, when I hit the switch the motor doesn't spin.<br /><br />Any idea's what to do next? I don't understand how when I picked up the boat the trim worked fine, now a month later, I had never used it and it won't turn on.... <br /><br />Thanks!<br /><br />Greg

 

[Don S]

Re: Volvo Trim Pump

IF you are talking about this connector,<br />

<br />You need to recheck it. Disconnect the connector and use both meter leads one on each terminal.<br />Then check the reading, both directions. You should see positive voltage one direction and negative voltage the other.<br />With a 2 wire motor, the ground is being reversed also. you could have power but loosing the ground with the same result. Inop trim pump.<br />If you have power and ground, the pump motor is bad.

 

[gregmercer]

Re: Volvo Trim Pump

Once again, thanks so much for your help.<br /><br />I am talking about that connector.<br /><br />Right now the trim guage reads 60.<br /><br />When I am not pressing either of the trim buttons, the DVM reads O at that connector.<br /><br />When I press the trim button on the throttle lever, closest to the bow, it reads 12 volts with my leads one way, and -12 when i switch the leads.<br /><br />When I press the trim button on the throttle, closest to the stern, I get a 0 volatage reading both ways, and don't hear a click when I press that button. <br /><br />Thanks!!!!!<br /><br />Greg

 

[michael-lagrange]

Re: Volvo Trim Pump

check the brushes on the motor, if they look clean dry and in fair shape the problem of not working will be before the motor. if they look worn out,replace them, if they look oily pull the pump tank assembly and re build. how-ever you have to find the leak to start with. you can remove the hydrolic lines at the cylinders to releve pressure and drop the drive about half way down "with help" that will eliminate a stop switch closed. good luck.

 

[michael-lagrange]

Re: Volvo Trim Pump

i dont want to lead you in the wrong direction, the manual troublshooting steps for-pump motor fails to run are,<br />#1battery not at full charge.<br />#2motor overload switch open due to over heating.<br />#3defective wiring,connection,ground,or solenoid.<br />#4defective key,push button,or rocker switch.<br />#5wiring not connected properly.<br />#6defective pump motor.

 

[Don S]

Re: Volvo Trim Pump

Defective motor on the trim pump.

 

[gregmercer]

Re: Volvo Trim Pump

How come I don't hear a click when I press the button closest to the stern? Is this because the sterndrive is already trimed all the way up?<br /><br />Sorry, this is my first boat and I don't know a whole lot about some of the things.<br /><br />So do I need to purchase a whole new motor or can I rebuild the one I have?<br /><br />Greg

 

[Don S]

Re: Volvo Trim Pump

In your first post, you said you could here it click, then in your post on 05 May, 2006 08:11 you say you get power to the wires going to the motor, therefore the relays are working. Why you don't hear them I can't say. But if you tested the system like I asked, then the only thing that can cause it not to work is the motor or the connections. You took them apart to do the test, were they all corroded? Did you try it both up and down?

 

[gregmercer]

Re: Volvo Trim Pump

When I press the switch one way, I here a click, when I press it the other way I hear nothing. I'm not sure which is trim up and which is trim down because I have never used it before and there is nothing written on the switch...<br /><br />Sorry that I am so dumb with this stuff, please bare with me. Thanks!<br /><br /><br />Greg

 

[Don S]

Re: Volvo Trim Pump

The easiest way to check the pump is to make two jumper wires. Put ends on one end that will plug into the connector on the pump motor. The other end can just be plain ends that you can touch to a battery. <br />Hook a wire to each terminal on the pump motor connector. Then touch each wire to a terminal on a battery. See what happens that direction. Now put them on opposite terminals. What happens in that direction.

 

[bruceb58]

Re: Volvo Trim Pump

After you do Don's test with 12V applied directly to the motor and assuming the motor works, try to measure the voltage at the connector again with it plugged into the motor if possible(not sure you can). The reason is that you may measure 12V with no load with a resistive connection and 0 with a load. This could be caused by a faulty relay or another bad connector somewhere.

 

[tashasdaddy]

Re: Volvo Trim Pump

greg, you found the right man in DON. give him good info, and you'll get the best back. he help me alot once i finally listened.

 

[johnbo]

Re: Volvo Trim Pump

I'm not an expert here, but when Greg said that he pressed the 'stern-most' button, he didn't measure any voltage across the motor connector.<br /><br />This would tend to indicate that there is a problem with the switch or the wiring upstream (towards the switch) of the measurement point.<br /><br />As Don pointed out a set of jumper wires at the motor connector (from the battery) could quickly rule out the motor, the motor should make noise no matter which way the jumper wires are connected. To be sure, make sure that you reverse the jumper wires after completing the test in one direction.<br /><br />If you are testing at the motor connector, you'll need to use moderately hefty wires as the trim motor current can be pretty high. A simple little test wire, might not have enough current capacity to get the motor to move, if it is against the pressure limits. However, you should be able to hear it do something.<br /><br />My 2 bits.<br /><br /> johnbo