Upgrade & Restore Your Tire Changer's Pivot Assemblies

The Center Post Washer is a heavy-duty mechanical washer engineered to distribute clamping loads evenly and reduce surface friction on moving pivot points and structural joints of professional tire changers.

Regular maintenance and timely replacement of warped, rusted, or scored washers are critical to preventing mechanical binding on main hinge pins and keeping assemblies pivoting smoothly.

Machine Location:

This washer is located directly on vertical hinge pins, swing arm pivot joints, or bead breaker arm cylinders.

Key Features & Specifications

• Hardened Steel Body: Stamped from high-strength steel to resist flattening, warping, or scoring under heavy loads.
• Optimal Load Distribution: Prevents structural fasteners from wearing into softer castings or aluminum blocks.
• Rust Resistance: Zinc-plated finish provides defense against shop humidity and compressor condensation.

Complete Machine Compatibility

This universal replacement part is documented and verified to fit the following Coats® equipment models:

• Coats 4050A Tire Changer
• Coats 4070 Tire Changer

Frequently Bought Together / Related Parts

These drawing-adjacent parts connect directly next to this part on your parts breakdown and assembly drawings:

• Coats Gear Tie Bar (Part # 8101298)
• Coats 3/4" Drive Gear Bolt, Gr.5 (Part # 8101296)
• Coats 3/8" 1-1/4" Self Tapping Bolt (Part # 8105131)
• Coats 3/4" Snap Ring (Part # 8101001)
• Coats Handle Grip Black Flex 3/4" Id (Part # 8100979)
• Coats Center Shaft (Part # 8108289)
• Coats 1-1/4" Machine Bushing (Part # 8101651)
• Coats Roll Pin (Part # 8100602)
• Coats 1/4" NPT X 1/4" Barb Elbow Fitting (Part # 8000376)
• Coats 1 1/4"-Inch Retaining Ring (Part # 8100964)

Alternative / Cross-Reference Part Numbers: SVI BW-1682-90 | Coats 8108290 | Distributor AM8108290

AMMCO and COATS are registered trademarks of The Coats Company. AEPN Inc. is not associated in any way with The Coats Company, Inc. Any names, symbols, numbers, and descriptions are used for reference purposes only. It is not implied that any part listed is the product of these manufacturers.