JD 750J-850K Dozer Track Adjuster & Recoil

Click on each number to jump to the product page. Each number on the image is a "Ref #" that can be matched on the table below.

JD 750J-850K Dozer Track Adjuster & Recoil parts list
REF #	Image	Fits Model	Description	Price	Product Details
1	See Details	750J, 750J-II, 750K	Recoil Spring and Adjuster Kit	AT406977	From $3,182.00	View Info
1	See Details	755K, 850J, 850J-II, 850JR, 850K	Recoil Spring and Adjuster Kit	AT406974	From $3,349.00	View Info
2	See Details	750J, 750K	Recoil Spring	T201613	$704.00	View Info
2	See Details	755K, 850J, 850K	Recoil Spring	T200850	From $884.00	View Info
3	See Details	750J, 750K	Recoil Spring Cover	AT316583	$214.00	View Info
3	See Details	850J, 850K	Recoil Spring Cover	AT315317	$214.00	View Info
4	See Details	750J, 750K	Track Adjuster Seal Kit	AT307336	$75.00	View Info
4	See Details	850J, 850K	Track Adjuster Seal Kit	AT314787	$85.00	View Info
6	See Details	750J, 750K, 850J, 850K	Wear Plate, Track Chain Idler	AT277938	$100.00	View Info
7	See Details	750J, 750K, 850J, 850K	Wear Plate, Lower Track Idler	T250445	$100.00	View Info
8	See Details	750J, 750K, 850J, 850K	Shim	0	T204101	$33.00	View Info
9	See Details	750J, 750K, 850J, 850K	Wear Plate, Idler	AT226968	$115.00	View Info
11	See Details	750J, 750K, 750L, 850J, 850K, 850L, 655K, 755K	Washer (Track Idler Bracket)	T204320	$21.00	View Info
	See Details	850J, 850K, 755K	Anti-Rotation Track Bracket Kit	AT408513	$94.00	View Info
12	See Details	750J, 750K, 850J, 850K	Spring Bushing, Track Idler	AT274298	$32.00	View Info

john-deere-750j-750k-850j-850k-track-adjuster-and-recoil-spring-.jpg

Track adjusters, recoil springs, idler wear plates, seal kits, and complete adjuster assemblies for John Deere 750J, 750K, 850J, and 850K dozers, covering both individual replacement parts and full tensioner rebuild kits.

Fits Models At A Glance

750 Series: 750J, 750J-II, 750K, 750L
850 Series: 850J, 850J-II, 850JR, 850K, 850L
Crawler Loaders: 655K, 755K

Key Notes

Application: Maintains proper track tension and cushions undercarriage shock loads
Coverage: Recoil springs, seal kits, idler wear plates, spacer shims, and anti-rotation brackets
Assemblies: Complete adjuster and spring kits available for full undercarriage service
Fitment: Model-specific seal kits and covers for 750 and 850 series machines

Why Choose Broken Tractor

✅ Complete kits and individual parts both available
✅ Fast shipping from two US locations
✅ Verified fitment across J, K, and L series

Frequently Asked Questions

Which track adjuster seal kit fits a John Deere 750J dozer?

The Track Adjuster Seal Kit SKU AT307336 fits John Deere 750J and 750K dozers. For 850J and 850K machines, use the seal kit SKU AT314787 instead. Match the part number to your model to confirm correct fitment.

What recoil spring fits a John Deere 850K dozer?

We carry the Track Recoil Spring SKU T200850, which fits John Deere 755K, 850J, and 850K machines. For 750J and 750K dozers, the Track Tension Recoil Spring SKU T201613 is the correct spring. If you are unsure which fits your machine, confirm the part number with the parts team at (800) 909-7060.

Do you sell a complete track adjuster and recoil spring assembly for a 750K dozer?

Yes. Broken Tractor offers the Complete Track Adjuster and Recoil Spring Assembly SKU AT406977, which fits John Deere 750J, 750J-II, and 750K dozers. For 850 series and 755K machines, we also carry the Complete Track Adjuster and Spring Kit SKU AT406974.

What is the track idler wear plate for a John Deere 850J dozer?

We carry several idler wear plates that fit the 850J, including the Track Idler Wear Plate SKU AT226968, the Track Chain Idler Wear Plate SKU AT277938, and the Lower Track Idler Wear Plate SKU T250445. All three also fit 750J, 750K, and 850K dozers. Match the SKU to the wear plate location you are replacing.

Will these track adjuster parts fit a John Deere 850L dozer?

Some parts do fit the 850L, such as the Track Idler Bracket Washer SKU T204320, which covers 750L and 850L along with earlier J and K models. Most seal kits, spring covers, and springs listed here are specific to J and K series machines. Check the fitment on each product or confirm the part number before ordering.