DK-40 Starting issues

[tkh159]

There are several relays that are part illustration number 20. That is because the relays are the same type of relay. So multiple relays for different functions but using the same part number. Make sense?

Makes perfect sense so that would mean some are interchangeable in this case.

As long as the glow relay is 12v 70amp not more and not less then I'm good to go.

NAPA has a replacement for the damaged relay but they are 12v 50amp.

I still have one relay that is 12v 70amp I'll just insure it belongs to the glow plug assembly.

The new 12v 50amp I'll put elsewhere I assume.

 

[k0ua]

Makes perfect sense so that would mean some are interchangeable in this case.

As long as the glow relay is 12v 70amp not more and not less then I'm good to go.

NAPA has a replacement for the damaged relay but they are 12v 50amp.

I still have one relay that is 12v 70amp I'll just insure it belongs to the glow plug assembly.

The new 12v 50amp I'll put elsewhere I assume.

I believe you should be good to go with this reasoning. On my tractor the glow relay is the 70 amp relay and the others are a 50 amp rating. Here is a aftermarket relay available here at O'reilly automotive (a local auto parts store). This would be a good replacement for the start and fuel relays which are of the same type, but not a good replacement for the Glow plug relay.

 

[k0ua]

The relays on my tractor are 5 pin, and the Normally Open pin is unused.

 

[tkh159]

I believe you should be good to go with this reasoning. On my tractor the glow relay is the 70 amp relay and the others are a 50 amp rating. Here is a aftermarket relay available here at O'reilly automotive (a local auto parts store). This would be a good replacement for the start and fuel relays which are of the same type, but not a good replacement for the Glow plug relay.

Awesome! Thanks! There's a O'Reilly here in town

 

[tkh159]

labeled them to help identify

1 has thicker gauge wire than 3

2 and 3 are coming off the same line of wire in a way?






these relays are in the same order as the first picture 1 2 and 3
1 relay was the one that was rusted out

 

[ritcheyvs]

Absolutely! I may need to get my hands on a workshop manual though. I did download one from tradebit. It has schematics and diagrams but nothing on how to fix electrical issues.

tkh: I sent you a private message with a link that to the electrical section of the manual but it is probably the same as you got on tradabit. The newer manuals are quite comprehensive but with a few errors. But manuals for older models (pre SE) are pretty sketchy and sometimes show a version other that what you have.

 

[Coyote machine]

Curious where things are at with your tractor? Did you get the relay(s) needed to put her back together? Seems from all the chatter the rusted out relay is the culprit, yes?
Your firewall looks from what I can discern from the pics, to have been in some kind of mudbath, swamp race? Maybe that's what did in the glow relay. If it were me, I'd clean the area where the relays mount, and use contact cleaner on ALL the female connectors before reattaching any of the relays. Make sure there are no damaged, frayed, chewed, broken or otherwise compromised wires on all of the wiring in the firewall area, and anywhere else you can see.
Post back results.:thumbsup:

 

[k0ua]

Curious where things are at with your tractor? Did you get the relay(s) needed to put her back together? Seems from all the chatter the rusted out relay is the culprit, yes?
Your firewall looks from what I can discern from the pics, to have been in some kind of mudbath, swamp race? Maybe that's what did in the glow relay. If it were me, I'd clean the area where the relays mount, and use contact cleaner on ALL the female connectors before reattaching any of the relays. Make sure there are no damaged, frayed, chewed, broken or otherwise compromised wires on all of the wiring in the firewall area, and anywhere else you can see.
Post back results.:thumbsup:

Some electrical rated grease on the push on connectors would't hurt either. I use No-Ox-Id, but there are others. Clean it up, repair/replace, and start over and see what happens..

 

[tkh159]

Curious where things are at with your tractor? Did you get the relay(s) needed to put her back together? Seems from all the chatter the rusted out relay is the culprit, yes?
Your firewall looks from what I can discern from the pics, to have been in some kind of mudbath, swamp race? Maybe that's what did in the glow relay. If it were me, I'd clean the area where the relays mount, and use contact cleaner on ALL the female connectors before reattaching any of the relays. Make sure there are no damaged, frayed, chewed, broken or otherwise compromised wires on all of the wiring in the firewall area, and anywhere else you can see.
Post back results.:thumbsup:

That's funny. Well I ordered a workshop manual and parts book specific to my DK40 in hopes that I hook up the two relays correctly. They both look the same and can fit properly in the female connection. Only difference one is 50 amp the other 70 amp.

I truly want to roll the dice and put the 70 amp on #1 ( from picture ) as the gauge of wire is bigger but I don't want to put a relay in the wrong place and cause further damage.

Glow plugs aren't working either that's another topic.

 

[tkh159]

Some electrical rated grease on the push on connectors would't hurt either. I use No-Ox-Id, but there are others. Clean it up, repair/replace, and start over and see what happens..

That's a good idea to have on hand.