new member 2520 starting question

[jd2520]

hello,

i am a new member i had jrecently purchased my first john deere a 08' 2520
i have visited this site and learned many things about the model. i do have a couple questions i am curious about. i have 24hrs. on it
1. upon start up after sitting a day throttle at half i get a lot of blue smoke. enough to fill my garage is this common? it goes away within 30 seconds and if shut off and restarted it does not smoke. the next day the same thing.

2. how reliable is the final drive on these rather than a straight axle? is there any problems with these from stress from 3 pt. no problems here just curious.

thank you for any feedback and if theres anything to look out for i would love to know by the way my 3 pt arms were upgrade after the first use of 3pt.

 

[Willl]

#1, Smoky start up is common with diesels, although I suspect yours will get worse if you continue to start at half throttle.

Any reason your doing this ?

Have you tried starting at lowest throttle setting ?

 

[Birdmayon]

#1, Smoky start up is common with diesels, although I suspect yours will get worse if you continue to start at half throttle.

Any reason your doing this ?

Have you tried starting at lowest throttle setting ?

I don't know if it's half or one third or what, but the owner's manual for the 2520 specifies a throttle setting for start-up and it is definitely not idle.

 

[gunmaker]

(1)I always start mine at idle, and there's just an initial puff of smoke which clears away within seconds.
(2)Haven't heard of any problems or complaints with the rear axle. Many have written of the use of 1000lb plus ballast boxes without incident. I move my 8000lb travel trailer around my property without difficulty using the 3pt.

 

[Willl]

I don't know if it's half or one third or what, but the owner's manual for the 2520 specifies a throttle setting for start-up and it is definitely not idle.

Wow, it's not. I just looked it up. Would you believe 1/2 to 3/4 ! That's just plain dumb.

Starting Procedure


Sorry JD2520, I stand corrected. I was wrong.

 

[Willl]

So out of curiosity, I looked up my 790 starting procedure.

Kinda surprised that it said 1/3 to 1/2.

I don't care, I'll continue to start at idle. I'll bet dollars to donuts it's doing less harm.

 

[jd2520]

yes the manual states 1/2 throttle start which is what i do so is the thick initial smoke normal?

 

[Kamik]

Yeah, at 1/3 to 1/2 throttle cold mine smokes like crazy and coughs, but at just above idle it lets out a single small puff of smoke and purrs like a tiger waking up!

Kamik

 

[Deadman]

its got to sound BAD starting cold at 1/2 throttle. ouch!

 

[jimgerken]

It wouldn't be the first thing that was wrong in the manual. Over the weekend I changed engine oil for the first time. Wow, the manual was off by almost a quart. Then I was all geared up to change the hydro oil and filter too, but one look thru the manual and I knew I needed more info before tackling it. All the pics were of some other model tractor, and the text wasn't of much help either. Today I printed the latest on-line version, it looks a lot better.

 

[tomd999]

Hiya,

The "start at 1/2 throttle" is a common generic Diesel starting procedure. I checked my manuals for Cummins and Detroit engines and they are just the same. I start all my Diesels with the throttle at idle or with a very slight opening. (the over the road trucks seem to like just a touch of throttle)

I was told many years ago by a Diesel wrench tech that the open throttle startup was for the old Detroit 53 and 71 series with roots superchargers. He said that the engines depended on boost to light off the rest of the cylinders when cold and the easiest way to do that was to have RPM's as soon as one fired.

Tom

 

[rtm038]

(1)I always start mine at idle, and there's just an initial puff of smoke which clears away within seconds.

That's exactly how I start my 2520- at idle.

 

[Runner]

"(1)I always start mine at idle, and there's just an initial puff of smoke which clears away within seconds."

Same here, and no problems starting so far. I must admit the only reason I started doing it that way is because you are told not to apply throttle when starting vehicles with fuel injection, so I assumed a fuel injected tractor would be the same.

JD2520, I'm just curious if you've ever tried starting yours at idle setting, and, if so, do you still have lots of smoke?

 

[jd2520]

not as much