Subject: RE: Transmission Adjusting

Hi Ted,

I just re-read the Chilton instructions on page 82...they are talking
about two different things, both of which apply to both the four and
five speed transmissions...

1. The four speed instructions describe how to adjust the eccentric
screw...this will apply to both four and five speed transmissions. The
purpose of the eccentric screw is to provide variable pressure in either
up or down shifting so that the spring will bring the shift drum back to
the "best" position. As long as the shift return spring is fitted
properly around the eccentric screw, I don't see how this, in and of
itself, could cause a racket.

2. The five speed isntructions describe how to adjust the shift arm to
which the cable attaches. I like to position the arm as far from the
back of the transmission as is reasonable, so that there is a greater
pivot movement - thus providing a little more throw out when
dissengaging the clutch. I've never worried about measuring it though,
as the Chilton's book describes.

Thats really all there is to external adjustments to the transmission.
If you are hearing a loud racket in one gear - while it is engaged, I
would probably take the transmission apart to see what was going on. If
you are just getting clunking and grinding when switching gears, then
that sounds more like an adjustment issue to me.

Ted Ward wrote:

I looked in the chiltons manual on Greg's website to see what it says
about adjusting the 5 speed transmission. What it says about adjusting
the 5 speed doesn't make sense. (The instructions for a 4 speed make
sense but I have a 5 speed) It says

"Loose the locknut and screw the adjuster screw in or out until a
distance of 67-69mm is established etween the gearbox cover and the
center of the round slot which secures the cable."

Well, there is no cable, just a locknut and adjuster I have no idea what

cable they might be referring to. For that matter, I don't know what
round slot they are referring to either. I guess I'll just try the 4
speed instructions, they even mention adjusting til every gear engages
quietly which is my problem.

Ted Ward

Greg Bender wrote:

Hi Ted,

Just to be sure we are on the same page here, we are talking about part
number 1423 7800 on Plate 8 in the Eldo parts book, right? - 'eccentric

screw, selector adjusting'?

If so, then my experience has been that I have to fit the end of the
screw between the ends of the spring with a little prying effort. In
fact, the later workshop manuals recommend squeezing the ends of the
spring together just a bit so that you get a nice snug fit between the
spring and hte screw. I'm afraid that if you just screw it in, that it
will just push the ends of the spring back and it won't get properly
positioned in between the ends of the spring. But, it certainly won't
hurt to give it a try while it's out on the bench, anyway. I'd try
screwing it in a little bit, then rotating the preselector back and
forth. Then repeat until you can feel that you've got the spring working

for you in both directions. You'll want to be careful that you don't
screw it in too far, or else it will rub/drag on the preselector every
time you change gears...not good. You may have to run it up against the
preselector to get the spring ends to grab when you rotate, but just be
sure to back it off so that it doesn't drag at all. You might get lucky
with this technique, who knows?

I would like to point out that these shift return springs have a
reputation of breaking. So, I'd be tempted to replace it now while the
transmission is out. Not saying yours will break, but it is possible.

Ted Ward wrote:

Greg, I haven't found any good info on this adjuster anywhere I've
looked.
Why would I need to remove the cover to replace it? When I look down
inside
I can see the spring ends and the adjuster screws in right between them.

I
don't know how taking off the rear cover would allow me to do anything
different.

----- Original Message -----
From: "Greg Bender" <gr-@thisoldtractor.com>

2. The offset shift adjuster - John Ulrich thinks you are referring to
the Shift Offset Bracket (SOB) made by Stephen Brenton. I think you may
be referring to the shift adjustment nut located near the shift output
shaft. If it is a large flat-tip screwdriver-headed bolt with a lock
nut, then - unfortunately - I am correct. If you've removed it, then you
will have to take the back cover off of the 5 speed transmission to
reinstall it correctly. As you've already noted, the business end of the
adjuster is offset. Normally, it lives between the ends of the shift
return spring. See here:

http://www.thisoldtractor.com/gtbender/loopframe.htm#transmission_pre-selector_shaft_leak_repair_(4_speeds)

http://www.thisoldtractor.com/gtbender/mg_images/shift_return_spring.gif

Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

Florida MGNOC website
http://www.thisoldtractor.com/fl_mgnoc

Minnesota MGNOC website
http://www.thisoldtractor.com/mn_mgnoc

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Get a Free T-Mobile Sidekick II plus $500 towards service!
Click here.
http://click.topica.com/caaduFNb1dfltbNPab1f/ProductTestPanel
-------------------------------------------------------------------

Subject: RE: Transmission Adjusting

Author: Greg Bender

Date: Jun 3, 2005, 8:32 AM

Post ID: 1718968112

Entire thread: