Trim tilt pump

wwilliamst

Recruit
Joined
May 21, 2021
Messages
5
Hello i have a 1980s mercury thunderbolt 500 50hp outboard and it came with every thing but the the trim tilt pump and i cant find one any ware any one no if i can mod a newer pump or is there a electric conversion available sorry if i seem ignorant i am new to the boat seen thank you.
 

James R

Commander
Joined
Feb 1, 2007
Messages
2,678
Your information about the year is too vague. We need year and serial number. Can we assume at least that it is a 4 Cylinder. That in itself is also insufficient.
 

wwilliamst

Recruit
Joined
May 21, 2021
Messages
5
Your information about the year is too vague. We need year and serial number. Can we assume at least that it is a 4 Cylinder. That in itself is also insufficient.
Sorry about being so vague its a 3 cylinder and i did find some numbers that could be of interest but no sure here are some pics
 

Attachments

  • IMG_0930.JPG
    IMG_0930.JPG
    1.5 MB · Views: 8
  • IMG_0931.JPG
    IMG_0931.JPG
    1.4 MB · Views: 8
  • IMG_0933.JPG
    IMG_0933.JPG
    2.2 MB · Views: 8

James R

Commander
Joined
Feb 1, 2007
Messages
2,678
The number on the plate identifies the model.
Are there any other parts of the T/T assembly attached to the motor to show that it had a T/T. Not all motors had one. If it had a T/T the pump and solenoid assy would have been attached to the boat deck at the stern.
 

wwilliamst

Recruit
Joined
May 21, 2021
Messages
5
The number on the plate identifies the model.
Are there any other parts of the T/T assembly attached to the motor to show that it had a T/T. Not all motors had one. If it had a T/T the pump and solenoid assy would have been attached to the boat deck at the stern.

James i cant find any other marking that would help i don't think but regard less do you think it can be moded if that is a word. From hydraulic to electric if i get the right actuators
 

mythx

Cadet
Joined
May 4, 2021
Messages
21
Hi, I've got a thread going with a similar discussion for the '79 version of same engine. Going to keep an eye out for just such a kit.

It seems to me that you could find any 12v hydraulic pump with the right specs and adapt it to work with your cylinder. It would obviously take more work, but might yield quicker results if you can't find one.

Just a thought.
 

wwilliamst

Recruit
Joined
May 21, 2021
Messages
5
Hi, I've got a thread going with a similar discussion for the '79 version of same engine. Going to keep an eye out for just such a kit.

It seems to me that you could find any 12v hydraulic pump with the right specs and adapt it to work with your cylinder. It would obviously take more work, but might yield quicker results if you can't find one.

Just a thought.
Thank you for your suggestion so you trim tilt cylinders have 2 hydraulic lines coming off them i am guessing supply and return 4 in total most pumps i see today just have 2 total
 

mythx

Cadet
Joined
May 4, 2021
Messages
21
I ran across this video. Seems like a simple solution. I may end up trying it myself:

Back to your question, in order to power two cylinders, I would imagine some sort of splitter would do the job. You'd need 2 of course, one for supply, one for return.

Hope that helps.
 

merc850

Commander
Joined
Jul 7, 2010
Messages
2,046
The serial Nr. is at the top on that silver tag in pic 2. If your motor has the 4 hose cylinders you need a trim pump, all the fittings and the wiring harness - I wouldn't use just any hyd. pump the proper one has internal passages that allow the motor to kick up if you hit an underwater object.
 

Attachments

  • POWERTRIM&TILT-page-1.jpg
    POWERTRIM&TILT-page-1.jpg
    179.8 KB · Views: 4
Top