450C Track Adjustment

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ctjim
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450C Track Adjustment

Post by ctjim » Sat Dec 01, 2018 12:17 pm

First post
From Connecticut

Issue: have a problem adjusting tracks by adding grease to the track adjustment zert fitting. While pumping grease and watching the track assembly move forward I pull off the grease gun and the grease starts coming out of the zert fitting and I'm back to where I started. I went to the local hardware store purchased a new grease fitting and the same thing happens. The part shown in my JD parts catalog is T45588 "lubrication fitting" looks like a simple grease fitting to me. What am I doing wrong.

mnfordtech
420 crawler
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Location: Northern Minnesota

Re: 450C Track Adjustment

Post by mnfordtech » Sat Dec 01, 2018 12:21 pm

Has to be a bad zerk fitting. They have a check ball in them to prevent what you are experiencing. Try another fitting.

dtoots1
350 crawler
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Re: 450C Track Adjustment

Post by dtoots1 » Sat Dec 01, 2018 2:03 pm

also need to check and see if you may well be to end of adjustment!....how much adjustment room actually left?

Jim B
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Re: 450C Track Adjustment

Post by Jim B » Sat Dec 01, 2018 3:22 pm

Regular zerk grease fittings will often work, but it depends on the zerk, you may have to try several. Like everything else it seems that more and more they let grease back out even in regular applications, at least that is what I have noticed. The quality manufacturers, like Lincoln, are more likely to hold than the off brands you often get at hardware and tractor supply stores; at least that's what I have encountered. Looking at the on line parts catalog, the JD # T45588 lubrication fitting subs to # JD10510 "Lubrication Fitting - Fitting, Grease Leakproof". They show the suppliers as Lincoln and Stewart Warner. Research on leakproof fittings finds they have different/better sealing systems and are good for 5,000 to 10,000 lbs. depending on the manufacturer you look at.

ctjim
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Re: 450C Track Adjustment

Post by ctjim » Sat Dec 01, 2018 8:30 pm

Thanks for everyone's quick response I called the John Deere dealer for the OEM lubrication fitting for $5.00 Ea. At that price they'd better not blow back after installing grease. As far as the travel of the adjustment I'm sure the 41 year old machine has reached it's borderline. I have to make a couple of determinations whether to do work on the undercarriage soon. The only "pushing" this retired beast does right now is pushing up the horse manure on the ranch and some minor horse trail maintenance work. But every man should have a farm tractor and dozer to play around on.

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gregjo1948
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Re: 450C Track Adjustment

Post by gregjo1948 » Sun Dec 02, 2018 4:39 am

If the track is tightening up to where the tension is correct, don't worry about how much adjustment is remaining. Look at the front idler (wheel) front part of the slide mount to see the remaining rail left before it falls off. Not sure that will make sense to anyone!!!!
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford

ctjim
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Re: 450C Track Adjustment

Post by ctjim » Mon Dec 03, 2018 8:09 pm

With the tracks adjusted to where they should be I still have 2-1/2" before I fall off the front nose which based on the rust on the adjuster Pistons must have been like that for the last 20 years, oh well.

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