I. P. Question on the 8.3

[86m1028]

I have a recently acquired an m936a2 with the 8.3.
Electric fuel shutoff is working like it should.
My question is, what causes the fuel shutoff lever return to open ?
I can start my truck, let it run for a short time, & shut it down.
When I try to restart it I have to turn batt power on, start switch to run & physically return the lever to open, before truck will start.
Is there an internal return spring ? Does fuel pressure keep it open ?
Im frustrated, please explain.

 

[adamsoffroadperformance]

my truck does the same thing. as I start to crank it I'll pull the manual shutoff lever out a little then shove it back in real quick and it will trip the lever since the cable runs through it and the truck will fire right up. just seems there is something catching on it or the spring is getting weak.

 

[simp5782]

Weak spring.

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[86m1028]

Thank you both.
Obviously it's an "internal" spring, can it be replaced easily or is it done when IP is rebuilt ?

Im searching for exploded views of IP now.

 

[simp5782]

Just buy the new solenoid. Its like 50$

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[86m1028]

Just buy the new solenoid. Its like 50$

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Its not the solenoid, it's the lever "fuel flap" on the IP that's not kicking back open.

Edit: Fuel solenoid is working properly.

 

[simp5782]

This one? //cloud.tapatalk.com/s/582e636591da2/Screenshot_2016-11-17-20-10-58.png?


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[86m1028]

This one? //cloud.tapatalk.com/s/582e636591da2/Screenshot_2016-11-17-20-10-58.png?
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Yes, the lever the solenoid closes to kill the engine.
That lever will not return to the open position when the solenoid retracts.

 

[simp5782]

Do you have your engine serial number handy?

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[86m1028]

Do you have your engine serial number handy?
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44573087

 

[simp5782]

Lever is 391071. The spring is 3912890

http://store.reliableindustries.com/engine-parts/cummins/3912890-spring-shutoff/

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[simp5782]

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[86m1028]

Here is a pic of IP tag

View attachment 654591View attachment 654592
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Again Thank you for the info.
Im searching that website now.
My IP does not have that rod/spring/lever on the engine side of it.
OR am I reading it wrong ?

 

[simp5782]

Its backwards. Mostly so you csn see it i believe rather than it all being crammed together.

I'm reading 6CTA8.3 Cummins Parts Catalog on Scribd. Check it out: https://www.scribd.com/doc/229092346

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[74M35A2]

Another member here had an issue with the lever-to-shaft splines. Check closely and see if that is OK.

simp, nice support. We may end up keeping you around.

 

[86m1028]

Another member here had an issue with the lever-to-shaft splines.
Check closely and see if that is OK.
simp, nice support. We may end up keeping you around.

Yes, I do need both of the aluminum arms that clamp to the IP shafts, return spring (internal) & ball/socket that goes on the end of the throttle cable.

Simp gets 2 thumbs up from me.

 

[simp5782]

Another member here had an issue with the lever-to-shaft splines. Check closely and see if that is OK.

simp, nice support. We may end up keeping you around.

Smarter than the average bear eh boo boo

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