Ok Rev. Here is the scoop. LV2520H607191 is a good number. Are you William on haldimand? Operator's manual OMLVU19796 clearly fails to identify the preheat lamp as well as skipping any mention of cold start aid, other than the block heater. DTAC solution #75636 tells us that the manual "does not clearly detail operation of cold start aid". The solution reads: 1: Prior to starting engine, turn keyswitch to ON position for 20 seconds. 2: Set throttle to 1/2 full throttle. 3: Crank engine for no more than 20 seconds. If unit fails to start, repeat step 1. I hope it helped.
Finally....an answer to the 2520 starting issue
- Thread starter revitupfaster
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JD755
Platinum Member
Thanks kjung17. To quote from my early post on the first thread: 
"The 2320 and 2720 have glow plugs and their manuals say to turn the key to ON and wait a few seconds for the glow plug light to shut off, then start the tractor. The manual for the 2520 specifically leaves out anything about preheat, but it does have either glow plugs or intake air heater. Engines marked 3TNV82A-BMJK have glow plugs, while engines marked 3TNV82A-MJK, MJKE have air intake heaters. I would follow the the procedure for the other tractors and just pretend to wait a few seconds for a light to shut off before starting it in cold weather."
"The 2320 and 2720 have glow plugs and their manuals say to turn the key to ON and wait a few seconds for the glow plug light to shut off, then start the tractor. The manual for the 2520 specifically leaves out anything about preheat, but it does have either glow plugs or intake air heater. Engines marked 3TNV82A-BMJK have glow plugs, while engines marked 3TNV82A-MJK, MJKE have air intake heaters. I would follow the the procedure for the other tractors and just pretend to wait a few seconds for a light to shut off before starting it in cold weather."
glc24
Platinum Member
Thanks JD755,being mine is a BMJK,that cleared it up for me. I know one thing though,at least for me,having a block heater makes a big difference in how quickly the engine fires.:thumbsup:
OP
revitupfaster
Silver Member
Thank you very much kjung17, and JD755, Yes, I am William (Bill) on Haldimand, so you have the right machine. I guess the DTAC (whatever that means) #75636 is some kind of "dealer update", am I correct? Too bad this wasn't passed on to the consumer. (ie..an addendum to the manual) Still doesn't address the "Mystery" light issue which some have and some don't. Can you find out if there was a particular time when JD added this light to the 2520?
When I wrote down my serial number from the machine, I don't believe I saw any other identification letters after the numbers.
OOps, I just went out and checked again, and the engine model number is actually under the hood on top of the motor. It is a BMJK which indicates that it has glow plugs,
Rob2010.......take note, sounds like you have the same incomplete manual I have.
Thanks very much kjung17, for your time and effort on this. I at least feel this subject has been "put to bed" for now. That's at least till another thread starts from some other 2520 owner that hasn't followed it.
And Yes, I still love my 2520........glow plugs and all.
REV
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Willl
Elite Member
Looking straight down on the engine, you should of been able to see the GPs.(I believe)
Deadman
Veteran Member
BREAKING NEWS!
My 2520 with no light on dash used to always crank over for 3-5 seconds before starting in cold weather. This was WITHOUT turning key "on" and waiting, I would just turn key directly to the start position.
TODAY, I decided to turn the key to "on" for 20 seconds just to try it after reading this thread for the last few days. The INSTANT I hit the starter, the engine was running. :thumbsup: It honestly startled me, because I was not expecting it to start for 2-3 seconds! :laughing:
Seriously, it starts ALOT faster with the "on" position and waiting. I let it cool down, and started it like this again later, and had the exact same results. Its really impressive. :thumbsup:
My 2520 with no light on dash used to always crank over for 3-5 seconds before starting in cold weather. This was WITHOUT turning key "on" and waiting, I would just turn key directly to the start position.
TODAY, I decided to turn the key to "on" for 20 seconds just to try it after reading this thread for the last few days. The INSTANT I hit the starter, the engine was running. :thumbsup: It honestly startled me, because I was not expecting it to start for 2-3 seconds! :laughing:
Seriously, it starts ALOT faster with the "on" position and waiting. I let it cool down, and started it like this again later, and had the exact same results. Its really impressive. :thumbsup:
OP
revitupfaster
Silver Member
Well I'm glad somebody else learned something about their tractor. That said, I guess this 2nd or 3rd thread go round on the same issue was worth it. Too bad the owners manuals weren't right in the first place, would have saved a lot of wear and tear on starter motors.
I guess you take back your original comment about how easy your tractor started before, when you thought 3-5 seconds of cranking was OK, now that you know the proper method.
REV
JD755
Platinum Member
Glad to hear things are going better now. I know having a light would have helped.
My 755 has the glow plug/heater/dash light/timer system common to all (or most) JD compacts, and I have always waited for the light to shut off. The time the light is on will vary depending on the temperature of the engine compartment. It has always (over 17 years) started about as quick as I can get the key turned to start and back to run position. If it ever took longer than that instant I would know something was wrong such as a nearly dead battery.
My 755 has the glow plug/heater/dash light/timer system common to all (or most) JD compacts, and I have always waited for the light to shut off. The time the light is on will vary depending on the temperature of the engine compartment. It has always (over 17 years) started about as quick as I can get the key turned to start and back to run position. If it ever took longer than that instant I would know something was wrong such as a nearly dead battery.