Circle Drive Pinion w/ Clutch for John Deere 670C–872P Motor Graders – T165061

Fits Models At A Glance:

• John Deere Motor Graders: 620G, 620P, 622G, 622GP, 622P, 670C, 670CH, 670D, 670G, 670GP, 670P, 672CH, 672D, 672G, 672P, 770C, 770CH, 770D, 770G, 770GP, 770P, 772CH, 772D, 772G, 772GP, 772P, 870D, 870G, 870GP, 870P, 872D, 872G, 872GP, 872P

Key Notes:

• Part Number: T165061
• Weight: 41.00 lbs (18.60 kg)
• Splines: 27
• Teeth: 6
• Configuration: With slip clutch — fits both single input and dual input circle drive configurations on machines equipped with the optional circle drive slip clutch
• Type: Circle drive pinion — the output gear in the circle drive gearbox that meshes with the internal ring gear on the blade support circle to rotate the motor grader blade left and right during grading operations
• Slip Clutch Function: The slip clutch allows the drive to disengage when the blade strikes an immovable object, protecting the moldboard, circle ring gear, circle drive gearbox, and draft frame from impact damage
• Application: Driven by the hydraulic motor through the circle drive gearbox; the pinion teeth engage the circle ring gear to swing the blade to the desired cutting angle; a wear item that degrades with heavy circle use, especially under high lateral blade loads
• Note: Verify your machine's circle drive configuration before ordering — if your machine does not have the slip clutch option, see companion part T152876 (without clutch)
• Availability: Currently out of stock — call for lead time
• Origin: Made in USA
• Manufacturer: PVE Products

Common Use Case or Symptoms:
Use when circle rotation is sluggish, jerky, or grinds during blade repositioning, or when visible tooth damage or excessive backlash is detected on the drive pinion — a worn or broken clutch-side pinion causes uneven torque transfer to the circle ring gear, compromises the clutch engagement, and reduces blade angle control during grading.

Why Choose Broken Tractor:
✅ Made in USA by PVE Products — 27-spline, 6-tooth circle drive pinion machined to OEM specifications for correct mesh with the John Deere circle ring gear on clutch-equipped gearboxes across the 620 through 872 motor grader family
✅ Slip Clutch Protection Maintained — correct pinion for clutch-equipped configurations ensures the slip clutch functions as designed, protecting the circle and gearbox from impact overloads
✅ Single and Dual Input Compatible — one pinion fits both single-input and dual-input circle drive configurations without modification