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glow plug relay on tc35da

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trbomax
Join Date: Apr 2004
Posts: 133 Starvation Lake, Mi
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2006-12-20          138235


last summer the light would flicker,and not always come on. Then it would come on after warm-up and go out. Now that its cold it never comes on and the unit wont start at temps below 30.It does still come on ocasionally after warm-up for a few seconds. Whats up ?

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glow plug relay on tc35da

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trbomax
Join Date: Apr 2004
Posts: 133 Starvation Lake, Mi
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2006-12-20          138236


another odd thing ,about the same time the cruise control quit working too. ....

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glow plug relay on tc35da

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2006-12-21          138267


I've got a TC33D with he same glow plug problem. Bought a new relay but haven't installed it. Cruise control works fine. Does yours have a magnet that grabs a flat surface near the steering column? If so the wearing surface might be dirty, or possibly the cable is sticking. ....

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glow plug relay on tc35da

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trbomax
Join Date: Apr 2004
Posts: 133 Starvation Lake, Mi
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2006-12-22          138276


Magnet on the column ? My cruise is just a toggel switch on the right fender. Where is the relay located anyway and how much are they ? ....

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glow plug relay on tc35da

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2006-12-24          138323


Keep in mind my 33D is different that yours but...the relay is under the right hand side cowling next to the steering wheel column. I paid about $18 plus shipping, and the dealer suggested I go to a regular autoparts to buy it but I wanted to be sure it was the right one.

Mine works by a toggle switch on the dash, and goes through relay as whenever I touch the left brake it disconnects. The magnet is located on a lever on the steering column lower portion connected to the foot pedal linkage. It keeps the pedal at a certain position. It more or less a lock for the hydro pedal. Because it's a magnet and not a positive stop like a sliding pin-in-a-hole, it can be overridden if you press hard enough on the go pedal.

It looks and works like a trailer axle electric brake magnet or "puck". When the cruise is not on I can hear the magnet slightly grazing the flat plate. When turned on, the magnet grips the plate and in doing so prevents the go pedal from moving. It's a simple but effective set up. If yours is similar to mine, I'd check the fuse, the switch , relay and see if there's power to the magnet. If the magnet has power, see if the plate is dirty or rusted. It should be clean to make the magnet grip properly IMHO. ....

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glow plug relay on tc35da

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trbomax
Join Date: Apr 2004
Posts: 133 Starvation Lake, Mi
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2006-12-26          138347


Can you post the p/n for that glow plug relay ?I went to the dealer today in Traverse city with a pic of my relay panel so that I could buy one and they could show me which one it is. Basically they told me if I could bring it in they would look at it.Then I ask just to buy the relay and I'll figure out where it goes,but they didnt know if they had one and just couldn't find the p/n in the parts list .I will truck the unit 300 miles back to Ohio where I bought it before I'll ever go back there.I bought it in Oh when we lived there,then moved up here. Guess I should have bought a new tractor when I moved ??? ....

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glow plug relay on tc35da

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2006-12-26          138349


It doesn't make sense to give you the relay P/N for mine as we have totally different machines.

That said, if you have time, go to the link below and go to New Holland parts and the go through the required progressive steps to find your part (it can take awhile to load---I have wireless internet wich can be slow).

It's got the same pictures and (basic) info the dealers have. And with a "click" you can order directly from the website with a credit card. They're in Penn. 1500 miles away from me but I haven't found a dealer that can match their service---ESPECIALLY the local ones (total dumbasses--and that's their good point!) I've bought about a grand worth of parts from them and they have always been great to deal with. My guy at the parts desk I like to use is Ed Hughes. And he uses e-mail to let you know part status too. Tell him Jeff Ordway from Earthwerks Unlimited in Mississipi sent you. If you are new to the TP board, Tony aka "Oneace" used to work there as a technician. ....

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glow plug relay on tc35da

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trbomax
Join Date: Apr 2004
Posts: 133 Starvation Lake, Mi
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2006-12-28          138375


Well,I finally just did what I should have in the first place. I called the dealer in ohio where I bought it,he said they just fixed a tc35da last week that was doing the same thing.He is overnighting me a controller,Ill stuff it in this afternoon and see what happens.I just dont understand the mentality of some of the people up here though. ....

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glow plug relay on tc35da

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oneace
Join Date: Mar 2004
Posts: 1490 south central pa
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2006-12-28          138378


The two machines use the same relay for the glow plugs. In fact they have the same engine also. ....

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glow plug relay on tc35da

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trbomax
Join Date: Apr 2004
Posts: 133 Starvation Lake, Mi
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2006-12-28          138387


Well,Fed X was here at 11am,tractor was running at 11:30.Horses are happy,I'm happy. ....

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glow plug relay on tc35da

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CraigW
Join Date: Jul 2003
Posts: 2 Warremsburg NY
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2007-01-01          138422


Was it the control unit that you replaced or was it the glow plug relay switch? I'm having the same problem on my TC45D and I want to order the right part. Thank you. ....

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glow plug relay on tc35da

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CraigW
Join Date: Jul 2003
Posts: 2 Warremsburg NY
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2007-01-07          138529


I ended up replacing the glow plug "controller". It works great now. :) ....

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glow plug relay on tc35da

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rogerson
Join Date: Jan 2007
Posts: 7 North Bay, ON Canada
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2007-01-28          139279


I recently had to change the glow plug relay on my NH TC45D. It was a 30 minute repair. Remove left cover below dash, unplug, unbolt (one bolt) and reverse proceedure. Had same problem. Glow plugs would work intermittantly and then the glow plug light would flash on and off during normal operation. I don't know if it made any difference, but my NH tech suggested disconnecting the battery while changing relay.
The part number for a TC35D, TC40D or TC45D is SBA385870300, The part number for a TC35, TC40 or TC45 is SBA385870500. The difference being the D or Deluxe units glow for 5 seconds while the standard unit glows for 10 seconds. ....

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glow plug relay on tc35da

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rogerson
Join Date: Jan 2007
Posts: 7 North Bay, ON Canada
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2007-01-28          139280


The part number for the Glow Plug Relay for a TC45D is SBA385870300. ....

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glow plug relay on tc35da

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2007-01-28          139286


Roger: How did you find out about the time difference? Seems counterintuitive that, assuming the machines all have the same basic motor as Oneace says, that having a "D" would cut the time in half. Logic says they would all have the same on-time, no?

I'm all ears! :)

(and yes, I've been told I'm all wet too.) ....

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glow plug relay on tc35da

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rogerson
Join Date: Jan 2007
Posts: 7 North Bay, ON Canada
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2007-01-29          139292


Apparently according to where I bought the part, the "D" ie TC45D stands for "Deluxe" while a TC45 is not deluxe. It may be the same motor, but according to the service bulletin that he faxed me the "D"'s have a different glow plug in them, resulting in quicker warming and hence requiring a shorter glow period, thus a different relay. Call your dealer and they should be able to fax you the information from the service manual. Also you can look up any part number on-line through newholland.com and it will show you two different relays based on model number.

The service bulletin shows you how to test the relay, but given that this is the only switch between the ignition and the glow plugs, if it isn't timing correctly where else could the problem exist? So instead of running the jumpers to do the simple test, I simply changed the unit, end of problem and end of story. ....

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