Merc 470 trim pump

[dlandon]

I have a trim pump on a '79 merc 470 that stopped working. All I get is a clicking sound on one of the solenoids/relays. I can't tell which one is clicking. Neither the up or down works. Any suggestions? Is there a way to test it? I'm not that good at electronics, so any help will be greatly appreciated.

 

[lilmandavis]

Re: Merc 470 trim pump

if its that old might be time to start lookin fer a new one der. thats after all the connections have been cleaned.

 

[Rod Holder]

Re: Merc 470 trim pump

If you are sure the battery is fully charged, you may have an issue with the brushes in the motor (as was an issue with mine).<br /><br />Was it fine last year and is now a problem after storage ?<br /><br />I removed my motor and brought it down to the local auto electrical shop and they installed new brushes/springs and machined the armature for arouns $ 25.<br /><br />Hope this helps.........RH

 

[bigbrownbuku]

Re: Merc 470 trim pump

a better idea of the type you have might help. a picture or a description of the pump motor and resevoir assembly including wires from the pump.