IH 484 throttle friction adjust?

rww · Apr 27, 2016

Hi guys. the dash lever is slipping back to low idle. I looked at the linkage and tightened down on the big nut on the shaft (1 1/8") about 1/8 turn. not much improvement. wonder if I am going about this in the right way, is there something else involved? thanks in advance!! Richard

JimB2 · Apr 27, 2016

Hi, you have to reach up under the dash and tighten the jamb nut for the friction disk.

See parts at link at caseih.com for parts.

JimB
484 Throttle

rww · Apr 28, 2016

thank you sir!!i guess the jamb nut of interest is the one on the bottom of the shaft?

JimB2 · Apr 28, 2016

I guessed you had the wrong nut as there were no bleeding knuckles!!!

JimB

495man · Apr 28, 2016

Yes. Stubby 3/4" wrench works best.

With the throttle in the "slow" position, get the wrench on the nut, then pull the throttle "wide open" beats trying to use the wrench under the dash.

Think I did the 495 by just removing the panel over the brake pedals (three cap screws) Easy job.

rww · Apr 28, 2016

just to be sure, am I tightening the top or bottom nut on the shaft?

495man · Apr 29, 2016

Yes. If you look up you should see the shaft and bottom nut. I had the ROLL PIN in that assembly break once..that was fun replacing.

rww · May 11, 2016

I looked at the throttle shaft the other day. The bottom nut on the shaft has a cotter pin through it. I take it that that is the nut to be tightened for friction? thank You!!

495man · May 11, 2016

Seems to me I did the bottom, think I had a lock nut, newer tractor so they might have changed slightly.

rww · May 25, 2016

I have been looking at the schematic and the actual linkage, and they are not the same. The 'nut' on the bottom of shaft has a pin through it that could be removed, but has no shoulder like a nut that can be adjusted. The only actual 'nut' I see on the shaft is the big one on the top end that takes a 1 1/8 " wrench. I have tightened down on it a bit, but see no change in the friction applied. help please!!! thanks Richard

IH 484 throttle friction adjust?

rww

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