SheaveThis sheave is an aftermarket replacement, contact us to verify fit before ordering. Sheaves are grooved pulleys that guide the lift chain across the mast on a forklift, redirecting force smoothly between cylinder and carriage. A worn or seized sheave can chew through chain plates, accelerate mast wear, and even create a chain failure under load. Fleet maintenance teams, mast rebuilders, and repair shops plan sheave replacement during mast refresh or after any chain incident. Share the mast configuration, truck make, model, and serial range with us and we will confirm groove profile, bore, and mounting style before you order so the new sheave drops in correctly.Aftermarket replacement part, cross-references original part number AC34B-72-51150.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC34B-72-51150, ac34b-72-51150, AC34B7251150, ac34b7251150 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.
