Upgrade & Restore Your Tire Changer's Pivot Assemblies

The 8100994 Flat Washer (3/4") is a heavy-duty, hardened structural carbon steel flat washer designed to support high structural loads and prevent friction binding on the primary mechanical shafts of professional tire changers. By providing a flat, hardened bearing surface, this washer spreads axial clamping tension and ensures smooth pivoting.

Regular maintenance and timely replacement of rusted, warped, or scored flat washers prevent mechanical play in your swing arm and locking towers, ensuring tight tolerances.

Machine Location:

This 3/4" heavy-duty washer is positioned directly on the Main Vertical Hinge Pin, the Swing Arm pivot shafts, or the Bead Breaker Cylinder mount pins of the tire changer.

Key Features & Specifications

• Hardened Structural Carbon Steel: High-tensile stamped steel construction designed to resist deformation and galling under heavy pivot loads.
• Precision Fitment: Inside diameter sized precisely for standard 3/4" heavy-duty steel shafts and pins.
• Load Bearing: Spreads structural clamp tension evenly, preventing mechanical play and ensuring smooth pivot action.

Complete Machine Compatibility

This universal 3/4" flat washer is verified to fit the following Coats Rim Clamp® tire changer families:

• Coats 4050 Center Post
• Coats 4050A Tire Changer
• Coats 50/60/70/80/90 X-Model Series Tire Changer
• Coats 7xxx Series Tire Changer (prior 2010)
• Coats 80C_90C Center Clamp Tire Changer (Revision 1)
• Coats 80C_90C Center Clamp Tire Changer (Revision 2)
• Coats 85610863 Silver Eagle TC
• Coats 85613210 MAXX Model

Frequently Bought Together / Related Parts

These drawing-adjacent parts connect directly next to this flat washer on your main vertical hinge and swing arm pivot schematics:

• Coats Nylon Bearing W/Flange (Part # 8101351)
• Coats 3/8"-16" X 3/4" Hex Head Washer Cap Bolt (Part # 8102459)
• Coats Inflation Nozzle Cone (Part # 85608894)
• Coats 1/8" X 1 Cotter Pin (Part # 8102278)
• Coats 1/4"-28 Grease Fitting (Part # 8184226)
• Coats 3/4" Lock Nut N.C. (Part # 8100957)
• Coats 3/8"-16 St-HHCS (Part # 8108852)
• Coats Clevis Pin Detent (Part # 8107665)
• Coats Clevis Pin (Part # 8111148)
• Coats 3" Position Valve For Short Arm Robo Arm (Part # 8183642)

Alternative / Cross-Reference Part Numbers: SVI BW-1609-94 | Coats 8100994 | Distributor AM8100994

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.