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Author Topic: Glow plug wireing sequence  (Read 5417 times)

imperial1960

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Re: Glow plug wireing sequence
« Reply #6 on: December 14, 2016, 02:45:48 PM »
You say its a 12 volt system? Look up in manual here from MTZ or call them
Belarus 562 4x4 russian loader bucket

imperial1960

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Re: Glow plug wireing sequence
« Reply #5 on: December 14, 2016, 02:40:08 PM »
I wired mine from key switch to relay bypassing the glow plug indicator (had an open) that was burnt up.Try disconnecting nu 4 and bypass it with a large jumper wire.The insulator goes in the middle of the large washers.Could have a shorted out glow plug use a DVM check ohms resistance. I wired in a heavy duty ford relay if this helps
« Last Edit: December 14, 2016, 02:42:23 PM by imperial1960 »
Belarus 562 4x4 russian loader bucket

metzjim

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Re: Glow plug wireing sequence
« Reply #4 on: December 11, 2016, 06:24:58 PM »
Hi,


Think I solved it today.....rather expensively.  Burned up my new glow plugs.  I did not realize that the 520 glow plugs run at 1.4 volts each.  They, plus the glow plug indicator, probably only require a total of 7-8 volts. me pumping 12 volts through probably roasted them one after the other.  Once I understood there must have been a resistor somewhere, I traced the old wireing back and found one along side the old voltage regulator that controlled the voltage for the original generator.  As I had replaced the old generator with an AC Delco altenator years ago never thought about that anything on the old girl would run with anything other than 12 volts.  The old resistor was fried.....probably the reason I had issues with the glow plugs in the first place.  I have found a guy that has the replacement parts, including a resistor.  I was thinking of putting it in between the solonoid and the glow plug indicator.


Another thought ......I wonder if there are any 12 volt glow plugs that would fit the block....it would eliminate the need for a resistor and the glow plug indicator (a resistor itself.....I would expect it, the 4 glow plugs, and the resistor would be required to send the correct voltage out to the glow plugs).  I would just be able to figure out the time required to heat the plugs and simplify the whole process.....at least in my mind.  lol


Any thoughts? [size=78%] [/size]
  • 520 Belarus

metzjim

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Re: Glow plug wireing sequence
« Reply #3 on: December 11, 2016, 06:31:30 AM »
Hi,


All the old wiring has been removed and replaced.  The wiring was so old and brittle had no choice.  We were able to get everything running again with the exception of the glow plugs.  When we reinstalled them, we used a solonoid to send the signal out to the glow plugs.  We have 12 volts out to all glow plugs, but ran into a couple of issues. 


1) Had to disconnect the ground at the end of #4 because all it wanted to do was heat the harness.
2) We were running the full battery charge through the solonoid, into the indicator light and then out to the glow plugs.  Obviously wrong as we immediately burnt it up. (Oops)
3) We currently have the glow plugs in the block, then the insulator, a washer, the 2 wires, a lock washer, and the cap screw.


Any ideas?  Currently -19 degrees Celcius here.  Could really use them.  :)


Thanks,


Jim   
  • 520 Belarus

imperial1960

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Re: Glow plug wireing sequence
« Reply #2 on: December 09, 2016, 12:23:20 PM »
Check this ground at the end of glow plug wiring AT THE BLOCK Then with a DVM check wiring to each glow plug for voltage these wires burn up over time.Check your dash glass indicator is it glowing? Check key switch for voltage when selecting G/P indicator.Could be someone didn't rewire correctly from key switch to relay to G/P let us know!
Belarus 562 4x4 russian loader bucket

metzjim

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Glow plug wireing sequence
« Reply #1 on: December 06, 2016, 07:33:28 PM »
Hi All,


Can anyone tell me the sequence to connect the glow plugs together on my 520 Belarus?  Most of the old wiring harness has been replaced, and it is running off of an AC delco alternator now.  I just cannot seem to get power beyond beyond my first glow plug.  They are connect with a series of short wires that connect the first one to the next one, culminating with the last plug haveing a wire that grounds it to the block.  Each glow plug threads into the block and has a shoulder that the wire with the large ring slips over snugly.  I assume then that the insulater then goes on, followed by a flat washer, then the small ring of the next wire that connects to the next glow plug.  Finally this is held in place by the threaded cap.


I have to have something in this sequence I assume.  Can anyone help me solve this.  My old Belarus is really missing its glow plugs in this cold Eastern Canadian weather.  :)


Thanks for any help you can provide.


Jim
  • 520 Belarus