Pulled my lower unit on hydro electric shift

[hoosier]

After following some good troubleshooting advice here I pulled my lower unit on my 100 horse. I am pretty certain its the solenoid (I couldnt get neutral or reverse even running a hot wire to the blue and green wires) So now does anyone know where I might get parts for a 72 100 hp johnson???? I have found rebuilt lower units but I dont want the whole thing and I really dont want to spent 1K+ for a lower unit on a 72 motor. Thanks for all the great help so far.


Tim

 

[F_R]

Re: Pulled my lower unit on hydro electric shift

After following some good troubleshooting advice here I pulled my lower unit on my 100 horse. I am pretty certain its the solenoid (I couldnt get neutral or reverse even running a hot wire to the blue and green wires) So now does anyone know where I might get parts for a 72 100 hp johnson???? I have found rebuilt lower units but I dont want the whole thing and I really dont want to spent 1K+ for a lower unit on a 72 motor. Thanks for all the great help so far.


Tim

How did you arrive at the conclusion that it is the solenoids? Did you test them? They should have 5-6 ohms resistance. If they are good, there is no need to find new ones.

 

[hoosier]

Re: Pulled my lower unit on hydro electric shift

I hooked a wire from the green and blue wire to the + on the battery while the motor was running and could not get out of foward gear. I replaced the fluid in the lower unit and there was no change. Is there something else it might be? I am very new at this and learning as I go. Im not sure how to test the soleniod for resistance. Thanks.

 

[F_R]

Re: Pulled my lower unit on hydro electric shift

I hooked a wire from the green and blue wire to the + on the battery while the motor was running and could not get out of foward gear. I replaced the fluid in the lower unit and there was no change. Is there something else it might be? I am very new at this and learning as I go. Im not sure how to test the soleniod for resistance. Thanks.

Of course there are other things it could be. A resistance test is super simple. You need an ohmmeter (multi-meter) set on low ohms test. Connect one meter lead to the green lead and other to ground. Observe the reading in ohms. Do the same thing with meter lead connected to the blue wire and ground. If they are within specs, it is not a solenoid problem.

As I said, the solenoids only operate a couple of oil flow control valves. The rest of it is all hydraulic. You are getting in way over your head if that it the case. At the least, you will need a repair manual, and several expensive special tools.

 

[tx1961whaler]

Re: Pulled my lower unit on hydro electric shift

You can go over to http://shop2.evinrude.com and look at the exploded diagram of the gearcase. It is quite complicated. If it's not the solenoids, then you'll have to decide if the motor's worth fixing. Some of the parts are no longer readily available and are very expensive. Finding someone competent to work on these 35+ year old gearcases that weren't made for that long would be another issue.
On a brighter note, if your shifter remote control is working and it good shape, you may be able to get 3 to 400 bucks for it.

 

[hoosier]

Re: Pulled my lower unit on hydro electric shift

Thanks for the help...I certainly will not buy expensive tools to repair this motor nor will I dump big bucks in it. I simply fish from the boat on occasion. Sounds like if it is not a solenoid problem I would be better off getting a different motor..And yes the shifter remote is is good working order as well as the motor itself so I my look at selling it. Thanks again for the help.

Tim

 

[jay_merrill]

Re: Pulled my lower unit on hydro electric shift

TESTING SHIFT SOLENOIDS

a. Neutral solenoid - connect low reading DC ammeter between green leads at knife connectors.

b. Shift into neutral position - key switch on

c. Ammeter should read 1.5 - 2.0 amps for 10 minutes.

d. If reading is too high or too low, solenoid should be replaced.

e. Repeat test between blue leads. Shift into reverse, use same test values and procedure.

f. Ohmmeter test (key switch off) - connect meter between green lead and ground and then blue lead and ground. Low ohms scale should read 5 - 6 ohms.


I would say that $300 - $400 for a used remote control is a bit optimistic - you have to remember that it is an unknown condition. That said, an NOS shift switch could easily fetch those prices, because it is in new condition.

 

[tx1961whaler]

Re: Pulled my lower unit on hydro electric shift

I've seen a used hydroelectric control and wiring harness go for 325 on ebay, but it was guaranteed to work and had a lot of good pictures of it internal and external. The right (desperate) buyer will pay alot when the alternative is to get rid of their engine.