ACSD Removal

[brewmasterii]

I've perused all of the threads I could find regarding the removal and blanking of the Automatic Cold Starting Device but I can't find any explanations of how to actually remove the unit. There's no way I can see to get to the Allen screws holding it on. There's too much stuff in the way and I'm a little leery of removing the spring.

Mine's leaking like a sieve and I really need to get it off. Has anyone here who's removed it got any tips? I haven't got a sniff of how to remove it.

Thanks,

Kelvin
94 JDM HDJ81

 

[HDJ81]

https://forum.ih8mud.com/diesel-tech-24-volts-systems/266555-acsd-mysterious-device.html

This is the thread I used and Frank Probst (reply #7) gives a decent rundown on the steps involved. I did get a blanking plate from a diesel shop, but one could easily be cut from aluminum.

Access was much easier from the wheel well, once the rubber flap was removed, but still a chore.

Good luck!

 

[brewmasterii]

Well I finally finished removing my ACSD. Not a bad job at all. The bolts were really tight and it took a lot of ooomph to break them free but once I did it was quite easy. I cut an aluminum blanker out of 1/4 aluminum plate and drilled the holes 4cm apart. Perfect fit. Mine was not busted but was pissing fuel. I'm sure I was losing 500ml an hour.

And now my cruise control works fine where it did not before! I have no idea why but I had heard on another forum that once you fix the fuel leak the cruise starts working again. I tested it today and now it's working as it should.

Kelvin

 

[finderscuba]

Did you replace the o-ring too? I put in a viton o-ring under my blanking plate. I'd imagine it still leaking without one.

 

[brewmasterii]

I re-used the old o-ring. It's not the o-ring that leaks, it's the ACSD device itself that leaks. Remove the ACSD, put a blanker plate on using the old o-ring, and voila - no more leak.

 

[finderscuba]

Good to hear. Mine was pissing diesel whenever the engine was running. I got tired of smelling it. But mine seemed to be leaking from the interface between the IP and ACSD.

 

[brewmasterii]

That's where it appeared to be leaking on mine as well. Most people who blank the ACSD just re-use the o-ring with no problems. The ACSD has an indent for the ring as well as the IP. When you remove the ACSD and put a flat plate on I think that it squishes the o-ring much tighter than the original seal. Whether or not that's the reason or it's because it only looks like that's where the leak was - I don't know. I just know that the o-ring looked and felt brand new when I removed it so I didn't feel squeamish about re-using it at all.

I still haven't fully removed the ACSD. It's still attached to the truck until I can find a connector to hook the two coolant lines together. It's currently just zip tied to the frame. Once I do remove it completely I will have a closer look at it and see if I can tell.

My ACSD was fully intact as well. Was yours?

Kelvin

P.S. I love your avatar. I'm originally from Portage now living in Calgary. Go Jets!

 

[Douglas S]

Mine was fully intact, but my motor stopped ticking once I removed it and the idle moved down to an appropriate level.

 

[finderscuba]

Mine was intact as well. I tried selling it here on MUD but no offers

Actually, a couple of weeks after I removed my ACSD, I woke in the middle of the night thinking about how some ACSDs have the internal pin shear off into the IP - and I couldn't remember seeing the pin. I ended up in the garage at 3am looking for the excised ACSD. Luckily it had the pin still intact. I was able to sleep after that.

 

[finderscuba]

Oh, and I replaced the o-ring with a viton one because ULSD kills rubber.

 

[brewmasterii]

Well it's easy enough to replace now. Where did you source the new O ring from? What size is it? I may just go get one and do it anyway.

Kel

 

[finderscuba]

The o-ring is Bosch P/N 2460223001. Cost me $2.90. I got it through a local diesel shop named Western Turbo.

 

[ForealBoreal]

The o-ring is Bosch P/N 2460223001. Cost me $2.90. I got it through a local diesel shop named Western Turbo.

What about buying the plate?

Also what is done with the coolant in and out lines?

 

[finderscuba]

The plate was Bosch P/N 1461074312. Cost me $17.90 from the same place mentioned above.

I had initially just joined the two ACSD lines with a male-male fitting (3/8" I believe). I'm now using the lower ACSD line to feed my circulating heater. The top ACSD line is plugged.

 

[Adam B]

I just went outside to try to remember what I did for the coolant hoses.

I just rotated both hoses so the ends are pointed at each other and used a double hose barb of the appropriate size. I used hose clamps rather than the factory squeeze-style clamps.

Brass Hose Barb Mender/Splicer