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Where is the adjustment for the idle speed? I have adjusted the the idle mixture screw at the base of the carb to get the best vacuum but the engine is idling at about 900 RPMs and I would like to slow that a bit.
On our truck the rod connected to the bell crank on the carb has what looks like a barrel nut but it is welded to the rod. Is the idle speed adjustment part of this rod?
IF some one could post a photo of where the idle speed adjustment should be that would be very helpful.
Thanks
Idle Speed Adjustment
Moderators: Cal_Gary, T. Highway, Monkey Man, robi
Re: Idle Speed Adjustment
Page 198 of Technical manual TM 9-8030 has a picture showing the Idle Speed adjusting screw.
I'd send you a screen shot, but in the digital copy I have of that manual, the picture is too "muddy" to see.
I'd send you a screen shot, but in the digital copy I have of that manual, the picture is too "muddy" to see.
1951 M37 "Brutus" w/Winch and 251 engine
Re: Idle Speed Adjustment
Thanks John for the reference page!
@Delta try this from the hard copy.
Gary
@Delta try this from the hard copy.
Gary
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- idle speed adjuster page 198 tm9-8030.JPG (243.5 KiB) Viewed 428 times
Cal_Gary
1954 M37 W/W
MVPA Correspondent #28500
1954 M37 W/W
MVPA Correspondent #28500
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Re: Idle Speed Adjustment
ok, a pic of my set-up. I have added an additional throttle return spring.
to set the idle, there is a small slot headed screw with a skinny flat head screwdriver. Mine idles most smoothly at about 750 or so rpm. NV
to set the idle, there is a small slot headed screw with a skinny flat head screwdriver. Mine idles most smoothly at about 750 or so rpm. NV