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185 Glow Plug and Fuel System Questions

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=204573
Printed Date: 18 Dec 2024 at 9:40am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 185 Glow Plug and Fuel System Questions

Posted By: Amacher
Subject: 185 Glow Plug and Fuel System Questions
Date Posted: 15 Dec 2024 at 2:08pm

Folks, I’m trying to spruce up an old 185. The motor was rebuilt around 20 years ago, and the guy that did it eliminated whatever the tractor had for a glow plug/preheat setup. Once the temp hits 30f or colder the engine won’t fire without ether, and I am not an ether fan. What did this machine have, originally, for a block heater or glow plugs, and are replacement parts available to reinstall? Also, same rebuild guy eliminated the sediment bowl/fuel shutoff assembly. And the hand primer is shot. Where do you folks recommend I look for close-to-original parts? Any advice I should hear while trying to get these parts back up to snuff?’
Thanks for your thoughts.

Replies:

Posted By: Gary(VA)
Date Posted: 15 Dec 2024 at 2:52pm

Sandy Lake Implement in PA can get a block heater. It gets installed on the same side as the fuel filter toward the rear of the block.

They may be able to help with other parts you’re missing too.

Posted By: calico190xt68
Date Posted: 15 Dec 2024 at 3:13pm

Assuming that primer is like a 190, you can buy the entire primer from Agco. Or, I bought a rebuild kit from Ed Guenther for about $100 less but that was quite a few years ago. The plunger and the check valves are what goes bad mostly. AGCO didn't have just the parts when I last checked.

By the way, there is a negative to getting rid of the sediment bowl. Debris gets into your check valve and can clog it up and cause it to run rough without the sediment bowl screen in place. I know from leaving my fuel cap off and mowing weeds.

Also, my plunger was leaking fuel when I pumped it and I assume that is also happening to you? I think Agco wants about $200 for the entire primer assembly. Agco also has the block heater. I believe 185s are new enough that they already have a block heater port available. My 190xt was a 1967 model and so I had to knock out a casting plug to get a block heater. Was well worth it though. I would get a block heater from another source as Agco is way more expensive like Sandy Lake.

I am also curious, it sounds like prior mechanic removed the manifold heater which helps start it in cold weather? That's the only glow plug right? I would think that would also be easy to replace unless he removed the wiring completely.

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80 7010, 80 7020. 67 190XTD Series I w/500 Loader, AC 2000 Plow, AC 4 row Planter, AC 77G Rake, Member Indiana A-C Partners, Member TAC

Posted By: Amacher
Date Posted: 18 Dec 2024 at 3:26am

Gary, Thanks for the advice on Sany Lake. I’ll look them up and call today on my lunch break. I’ll let you know what I find out.

Posted By: Amacher
Date Posted: 18 Dec 2024 at 3:44am

Calico
Good to Know Agco is still supporting old models to some degree.
I’m not positive if I have a manifold heater or something in the block itself. The tractor doesn’t live with me, and I haven’t had eyes on it since I wrote my original post. I seem to recall a soft plug near the right rear of the block, as Gary had described, that looked like it had two clipped off wire connections on it. The key switch has a “heat” position on it, the same as any modern machine with glow plugs, but I don’t see anything near the injectors that would suggest traditional glow plugs. Does the manifold heater work like the modern Case “grid” heaters that make a warm air pocket in the intake manifold? Is your block heater the plug-in variety (120v), or aren’t we talking about the same thing?
I’ve always been a sediment bowl fan for a number of reasons, too. Good place to pre-filter for big chunks, lets you know if you have water contamination (sometimes), and a good place to shut fuel off for downstream fuel system repairs. I can’t even shut the fuel off to change the filter. because this got eliminated. Going to have to siphon the tank empty when I get parts in and get things back to normal.
Thanks!!

Posted By: DrAllis
Date Posted: 18 Dec 2024 at 5:34am

When you turn the key switch to "pre-heat" you will hear a solenoid "click". This indicates it at least has that part of the system. The manifold heater is on the LEFT side of the engine on top of the intake manifold inlet tube right in the center. It looks like a spark plug and, is pointed towards the seat and has a heavy electrical cable connected to it. Holding the key switch to pre-heat for 45 to 60 seconds will make this spark plug area warm to the touch if it is working. Sediment bowl screens gel up in cold winter weather if you have cold winter weather, so don't use them. The block heater is located very close to the starter and is 110 volt and yours sounds like it needs a new drop cord. If it is melted that may indicate a new heating element is needed.