TO-35 glow plug replacement

[Boomer(OR)]

I purchased a 1959 Massey TO-35 Deluxe with the 4 cylinder diesel, a few weeks ago and it is extremely hard to start. I search around this forum and followed some of the advice given. I checked the glow plugs none of them work, there is power to the first one but nothing past it. New glow plugs for the Massey are expensive and I have seen post talking about changing them over to GM glow plugs. Could someone please give me the part number for the replacement plugs and any adapters that I would need to buy. Also if I could get a list of things you have to do to change it over. This is my first tractor and I’m having fun cleaning things up and getting it running good so I’m sure I’ll have other questions. Thanks!

 

[Anonymous-0]

the 4 cyl glow plugs work in series, which means they all must work together. they are avail from other sources too.

 

[Wisconsin Cowman]

829162M1 is the Massey part number this site has them for sale too. Or you can take that number and see if Napa can cross them over NGK probably has them too.

 

[Boomer(OR)]

Thanks for the responses, I've heard of a kit to replace the originals glow plug with GM and I'm trying to see if it would be cheaper to get the kit or buy the originals again. Any help on where to get this kit or part numbers so I can track them down whould be greatly appreciated. Thanks

 

[JDemaris]

The glow plugs differ between early and later engines.

Early engines have glow plugs with a thread size that is M14 X 1.25 mm. That is what the 829162M1 has for threads. It is a plug rated for no more then 2 volts. This is not a common thread size for glow plugs.

Later engines use glow plugs with a thread size that is M10 X 1 mm. This IS common and the same as many GM 6.2 and 6.5 diesels use.

If you want to change, first you have to know what you've got. I had a Allis Chalmer ED40 with the same Standard 23C diesel engine and the original glow plugs were awful and expensive.

If you have the M14 threads, here are a few alternatives from other brands.

Delphi HDS317 is the same as the MF 829162M1 and is only rated a max of 2 volts. Must be wired in series.

A Delphi HDS806 is an 11 volt plug with the same M14 threads, but protrude into the engine a bit further by 1/8"

An NGK Y-402-2 has the same M14 threads and is rated at 8 volts. It is only 1/16" longer and may be fine.

The later 23C engines with the M10 threaded glow plugs are wired in parallel instead of series and run on 10-12 volts.

I don't have my ED40 Allis Chalmers anymore. I made adapters and put in glow plugs with different threads for better starting with cheaper plugs. But that was 25 years ago and there's more stuff available now. I used Delco plugs for GM diesels, but they have changed too. The glow plugs made and sold by Delco are useless. However the Delco AC60G plugs are excellent and are almost burn-out proof. That because Delco doesn't make them. They are German Beru plugs stuck into Delco boxes.

 

[Boomer(OR)]

Thanks JDemaris , there is a relay or something that is under the dash that has a coiled wire in it. If I need the 2 volt plugs that are set in series I need to keep that right. If I have the higher volt ones that are set parallel do you take that out or is there a different setup needed. Thanks again for your time.

 

[Alan Gallant]

Get the Glow plugs working. I have the same engine. With Glow plugs working it starts great. Will not start without. You can test the glow plugs to see if they work with a multitester. They are hooked in series so if any of them aren't working then none will have power.Set the multitester to check the continuity between the positive and negative poles on the glow plug. If power is going through then they are working.

Good luck.

You may just need one and one is not that expensive.

Alan

 

[JDemaris]

I'm not sure I understand your question. But, if you have the 2 volt plugs, you will blow them up instantly if you feed full system voltage to them.

If you have the earlier system with the 2 volt glow plugs wired in series, it's actually 5 glow-units. Four in the engine, and a fifth that has the same resistance and glows so you can see how hot the plugs in the engine are. So, there are four "glow plugs" and a separate "glow indicator." All must be in place if you keep the 2 volt plugs.

If you change to 8 volt or 12 volt plugs, you can wire them in parallel, and not use a glow-indicator.

Regardless of what you use, any indirect-injected diesel needs glow plugs to start until the engine is around 100 degrees F.

 

[Boomer(OR)]

Well I decided to take the glow plugs to a tractor repair shop and have them checked. They checked all four and couldn’t get them to warm up, so I took them to NAPA and they tried also. After two places tried I figured they were toast so I was going to pick up another set. No one local had them so I was on my way home to order some on line when it hit me. We were trying to warm them up by hooking the ground, from a battery, to the threads that go into the block and the hot to the threads on the end. When connected in series the plugs aren’t grounded through the connection to the block. The power goes through each plug and is grounded from the last glow plug in the series to the block through a wire. What I figured is that I could hook all of the wires up with the glow plugs hanging down from the wires to check them that way. It worked great, what I found was that two weren’t working and the reason was that the wires and plugs had crap on the connections. A little cleaning and they all worked perfect, saved $200. Who said that the pros know everything. Now it’s on to the next problem.