Shift Cable Adjustment (PCM 1.23 and Morse)

As I said in my "tranny slipped" thread, I recently had a situation where my tranny slipped. This is an 89 Supra Mariah with a PCM 351 and a PCM Power Plus 1.23 engine. The control is a Morse control, MV-2.

I am checking everything out to make sure it is working correctly. I had recently changed my shift and throttle cables, and I was thinking that maybe I need to recheck the adjustment.

My understanding is that for the throttle cable the key is that the lever on the trans goes into neutral when the control lever is in neutral, and that the control lever pulls the lever on the trans all the way forward when you shift into forward.

So in setting up the shift cable I followed this instruction I found in another thread:

81nautique wrote: Ok guys, here is what I've found to be the easiest way to adjust cables. First thing is too make sure you've threaded the brass ends on so the threaded end of the cable extends at least 1/8" Hook both cables to the shifter end. Both cables are disconnected from the carb and trans at this point. Next put the shifter in neutral, go to the trans, with the lever on the trans in neutral adjust and attach the shifter cable to the trans. Go back to the shifter now and drop the throttle lever into forward, just to the point that the detent ball kicks in. Now go to the carb, adjust and attach the carb cable. You are done and should be in perfect sync with shift and throttle.    The trans should drop shoothly into gear without any increase in engine speed. It is that easy but do it in the above order or you'll fight it all day.

So I just did this. I will say that it is not really easy to figure exactly where the neutral position is for the lever on the trans. I can definitely hear a "click" when I move the lever into the neutral position, but it has a fair amount of play in that position. I am not sure where in that play I should try and adjust it.

But my real issue is that when I do this, and try it again with the Shift controller, moving into "forward" on the control does not appear to move the lever on the trans all the way forward. So if I put the control in forward, and go back to the trans, I can pull the lever forward another 1/8 inch of so.

My question-- is that an issue? I thought it was important that the lever on the trans move all the way forward. But maybe that is not right? 81Nautique did not say anything about it, so maybe that is not really an issue.

Thanks

Jared

Morfoot,

I have a 68 Mustang with Borg Warner Velvet drive. I just purchased the boat after last Christmas. I am just in the process of getting it running.

I had to replace the carburetor which may have messed up the control alignment.

When I shift into FWD I seem get power before the gear engages. I feel like the throttle is around 10 O'clock when the boat lurches into gear with a clicking sound and what seems to be to many RPM's.

Reverse works perfect and goes into gear around 1 O'clock and then power comes on.

I noticed that it looks like the ear on the transmission where the cable attaches does not seem to flip all the way forward into gear when the throttle is in FWD. I would think that this part would be fully FWD before power is applied.

Hope this made some sense to you. I am combing the threads for anything related.

Best Regards,

Greg

Gary,

The procedure worked great! I was able to understand that up until the forward engage detent there should be no throttle. The problem was that I put the shift cable into the wrong eyelet on the transmission when I put things back to together! After closer inspection and moving the shift cable to the other eyelet it worked great!

I was actually able to take my first spin around the lake yesterday!!

Thanks to everyone on this board who have helped me along the way. I am still not there yet with the Mustang, but I have acheived what I wanted to know. It runs, it shifts, it floats and looks pretty decent!

Regards,

Greg

A little help here, please:

Gary S wrote: There's a procedure to follow for properly adjusting your cables. Give these steps a try and you should be good to go. 1. Disconnect cables at trans and carb 2. At the Morse control disconnect both cables and rotate the brass pin connector so there is approx 1/8" of thread showing at the cable end. Reconnect both cables to the Morse. 3.At the transmission, place the transmission bracket(the one that the cable attached to) in neutral. You may have to move it back and forth to feel exactly where neutral is but it should detente in the center of travel. Once you find a firm neutral connect your trans cable. 4. Step 4 is the magic. Go back to the Morse control and with the transmission engage button in, move the throttle lever to the forward engage detente. Just move it forward and it should lock into the forward position firmly, stop when it does so. Now go to the carb, adjust the cable connector so the throttle cable smoothly attaches to the carb stud without moving the throttle. You are done. This sequence works for me every time with NO tweaking if you do it right. The trick is you must have the throttle in the forward (or Reverse) detente BEFORE trying to attach the cable at the carb.

Great advice. I just properly adjusted the cables using this method. Worked great.

JQ

Please don't thank me thank Alan.....

Just following g up again. Does this procedure work for GT40 EFI. The instructions Alan/Gary posted reference carbs.