79 Johnson tilt and trim

tblshur

Senior Chief Petty Officer
Joined
Aug 24, 2011
Messages
688
My friend has a 79 140 Johnson and the power tilt and trim stopped working the motor runs fine but it will not raise the motor or lower the motor we can use the bypass screw to raise it and lower any help would be greatly appreciated
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,638
If the motor is turning, and is turning the Pump, the problem is in the Hydraulics. I suggest a Factory Service Manual for that particular motor
 

tblshur

Senior Chief Petty Officer
Joined
Aug 24, 2011
Messages
688
Thank you jimmbo I do have a factory service manual for an 83 Johnson 140 hopefully it will help I had not looked at it yet thanks
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,638
A lot of Problems with the Tilt and Trim of that design, is from Operators not retracting the Trim Rams in all the way when securing the engine for towing, once the Tilt Lock is engaged
 

tblshur

Senior Chief Petty Officer
Joined
Aug 24, 2011
Messages
688
Thank you Racerone it was low but we filled it up and jimmbo I noticed that he broke the skeg I think he didn’t raise it up or went over a ditch however the problem he wanted me to help with was the switch it wasn’t making contact I got that fixed and ran it up and down about a foot then it stopped motor will run in both directions but outboard doesn’t move we opened the release screw we can lift it up and down I think I will have to take it off and check the valves and pump coupling thank you all
 
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