John Deere Forestry Belt Tensioners & Brackets

Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	250D, 260E, 300D, 850L, 950K, 350GLC, 380GLC, 3154G, 3754G, 670G, 670GP, 672G, 672GP, 770G, 770GP, 772G, 772G0P, 870G, 872G, 848L, 948L, 3156G, 3756G, 803M, 859M, 903M, 953M, 959M, 644K, 724K, 724L, 744K II, 744L, 824L, 1270E, 1270G, 1470E, 1470G	Belt Tensioner	RE506352	$82.00	View Info
	See Details	710G, 710J, 330B, 335C, 335D, 430B, 435C, 437D, 450G, 700H, 700J, 110, 120, 120C, 160C, 160LC, 200LC, 200CLC, 230LC, 230LCR, 270LC, 690ELC, E210LC, E240LC, E300LC, 653G, 1010D, 1110D, 1410D, 810D, 1070D, 770D, 2054, 2554, 200LC, 1490, 1490D	Engine Fan Support Bracket	RE503664	$258.00	View Info
	See Details	750C, 750C-II, 850C, 850C-II, 670C, 670CH, 672CH, 770C, 770CH, 772CH, 762B, 560D, 748G, 748G II, 748G III, 644G, 8100, 8100T, 8110, 8110T, 8200, 8200T, 8210, 8210T, 8300, 8300T, 8310, 8310T, 8400, 8400T, 8410, 8410T	Engine Belt Tensioner	RE57498	$69.00	View Info
	See Details	710D, 330LC, 330LCR, 370, 490E, 690E, 690ELC, 790E, 790ELC, 530B, 1270D, 1470D, 1710D, 1711D, 7250, 770C, 770C II, 770CH, 770D, 770G, 770GP, 772CH, 772D, 772G, 772GP, 870D, 870G, 870GP, 872D, 872G, 872GP	Belt Tensioner	RE68715	$82.00	View Info
	See Details	310E, 310SE, 310G, 310SG, 310J, 310SJ, 310K, 310SK, 310L, 310SL, 315SG, 315SJ, 315SK, 315SL, 410J, 410K, 410L, 710J, 710K, 710L, 450J, 550J, 550K, 605K, 650J, 650K, 655K, 700J, 700K, 750J, 750K, 850J, 850K, 344J, 344K, 444J, 444K, 524K, 544J, 544K...	Engine Belt Tensioner	RE548027	$64.00	View Info

John Deere forestry belt tensioners and engine support brackets provide replacement components used to maintain proper belt alignment and accessory drive tension on forestry and heavy equipment platforms. These parts fit machines including 3154G and 3754G forestry excavators, 670G–872G graders, 848L and 948L skidders, and forestry harvesters such as 1270E, 1270G, 1470E, and 1470G. Belt tensioners and support brackets help maintain correct belt tension for alternators, cooling fans, and other engine-driven accessories. When tensioners wear or brackets loosen, belts may slip, squeal, or fail prematurely. Replacing worn tensioners restores proper belt tracking and consistent accessory drive performance during heavy-duty operation.

Fits:
250D, 260E, 300D
3154G, 3754G, 3156G, 3756G
670G, 670GP, 672G, 672GP
770G, 770GP, 772G, 772GP
870G, 872G
848L, 948L
1270E, 1270G, 1470E, 1470G
803M, 859M, 903M, 953M, 959M

Common Repair Issues

• Belt squeal or slipping caused by worn tensioners
• Repeated belt failures from improper tension
• Misaligned belts due to worn brackets or mounting hardware
• Engine accessory drive vibration
• Alternator or fan drive belts jumping off pulleys
• Noisy pulley bearings inside tensioner assemblies

Parts Covered in This Category

• Engine belt tensioners
• Automatic belt tensioner assemblies
• Fan support brackets
• Engine accessory drive brackets

These components support the engine accessory drive system that powers cooling fans, alternators, and other belt-driven components. Tensioners maintain correct belt pressure while brackets support accessory components and pulleys. Replacement parts are designed for factory-style fit to restore proper belt alignment and engine accessory drive reliability.

Key Notes

Application: Replacement belt tensioners and brackets for John Deere forestry equipment and related heavy equipment platforms.

Coverage: Includes belt tensioner assemblies and engine fan support brackets.

Material/Build: Heavy-duty steel brackets and spring-loaded tensioner assemblies designed for engine accessory drives.

Function: Maintains proper belt tension and alignment for reliable engine accessory operation.

Made In / Brands: Varies by part.

Why Choose Broken Tractor

✅ Model-Specific Engine Drive Components
✅ Exact-Fit Parts for Proper Belt Alignment
✅ Fast U.S. Shipping & Experienced Support