| Author |
Message |
    
Galen Nordstrom
New member
Username: swede1
Post Number: 2
Registered: 05-2008
| | Posted on Friday, May 30, 2008 - 07:10 am: | 
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tilt up works. tilt down doesn't and trim rods wont move.motor fine..fluid fine.. can I get parts explosion for this unit or do i just replace the unit |
ikia
Visitor
| | Posted on Friday, May 30, 2008 - 07:41 am: |
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Go to ----shop.evinrude.com---- find the year ---find the HP---- find the trim and tilt unit ----hit the + thingy and poof the pictures are there. |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 6086
Registered: 02-2001
| | Posted on Friday, May 30, 2008 - 09:27 am: |
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I assume that you're saying that the electric motor operates in both directions BUT when in the down mode, the engine doesn't move.
Does this problem exist just after the engine is tilted to the full up position OR is it a constant problom from any position even after sitting a minute or two?
What is the model number of that engine? |
Galen Nordstrom
New member
Username: swede1
Post Number: 3
Registered: 05-2008
| | Posted on Friday, May 30, 2008 - 10:18 am: |
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Joe: down tilt is a constant problem. model is 85TL79R
Is that a check valve on the port side ..about 3/4n screw...is it worth examining..
ikia: thanks I printed it.. |
Galen Nordstrom
Member
Username: swede1
Post Number: 4
Registered: 05-2008
| | Posted on Friday, May 30, 2008 - 10:52 am: |
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Is there a way to relieve hydraulic pressure on the trim rods... if i could get the motor in a reasonable attitude maybe I could use it like that anyway.. |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 6087
Registered: 02-2001
| | Posted on Friday, May 30, 2008 - 11:01 am: |
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You say that the fluid is fine, meaning I assume that with the engine in the full up position, the reservoir is filled to overflowing which would be correct.
The check valve on the port side, standing in back of the engine facing it, is indeed one of the many check valves. There is a identical valve on the other side of that passageway. In back of that check valve you can see is a shuttle valve that travels back and forth depending on which mode the PTT is in.
That would be a starting point as in my experience thru the years, I have encountered that shuttle valve sticking a couple times. Examine that brass shuttle valve for scoring, chips, etc, anything that might cause it to stick.
There is also a rubber tipped Trim Down Relief Valve located under the oil pump. If that rubber tip becomes damaged or fails for any reason (something I've encountered quite often), the result would be the problem you're having.
I'll send you the hydraulic diagram via email.
When time permits, visit my store ) at: http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store |
Galen Nordstrom
Member
Username: swede1
Post Number: 5
Registered: 05-2008
| | Posted on Friday, May 30, 2008 - 12:52 pm: |
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Joe...thank you very much for the great diagram and the trouble shooting suggestions..i'll get at it asap.. |
Galen Nordstrom
Member
Username: swede1
Post Number: 6
Registered: 05-2008
| | Posted on Monday, June 02, 2008 - 09:47 am: |
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Joe...found the bad check valve...shuttle valve sticking as you suggested...took care of it and back in business like new....Cant thank you enough...Joe and ikia |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 6109
Registered: 02-2001
| | Posted on Monday, June 02, 2008 - 11:07 am: |
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Galen.... Glad you found the problem and all is well again. Now, just wait until you get the bill! (grin) |
