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Supersession History
Part Details
- OEM Number
- 184 190 M1
- Part Name
- Gear, PTO Driven (Hi-Clr)
- Qty per Tractor
- 1
- Assembly
- Parts Book: Power Take-Off
- System
- pto
- Notes
- Hi-Clearance PTO driven gear, 38 teeth. Source: MF 65 Parts Book Manual page 309. needs_verification=true.
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Related
Specs & Torques
Factory specs for the pto on the MF 65from a service manual covering this part's assembly.
| Fastener / Measurement | Value |
|---|---|
PTO: Number of splines (output shaft) | 6–6 count |
PTO: Output shaft major diameter 1-3/8 inch nominal. | 1.371–1.373 inch |
PTO: Output shaft minor diameter 1-3/32 inch nominal. | 1.098–1.108 inch |
PTO: Output shaft spline width | 0.338–0.34 inch |
PTO: Output shaft length available for attachments | 2.78–2.78 inch |
PTO: Output shaft cross-hole diameter 21/64 inch. | 0.328125–0.328125 inch |
PTO: Distance from cross-hole center to shaft ends | 0.625–0.625 inch |
PTO: Groove minor diameter | 1.155–1.16 inch |
PTO: Distance from groove center to shaft end 1-1/8 inch. | 1.125–1.125 inch |
PTO: Bearing housing cap screws torque Draw bearing cup into position by pulling cover with three cap screws. | 33–38 ft-lbs |
PTO: Bearing preload (turning torque on shaft, slight drag) Adjust preload by removing/adding shims. | 5–10 in-lbs |
PTO: Engine speed for 540 RPM PTO Engine 1500 RPM = PTO shaft 540 RPM = pulley 1002 RPM = belt 2360 ft/min. Proportional engine speed (18/50 ratio). | 1500–1500 rpm |
Service Procedures
R&R and adjustment procedures for the pto on the MF 65.
Source: MF 65 Workshop Service Manual (manual id=12). PTO drive shaft also rotates the hydraulic pump — pump runs continuously even when PTO is disengaged. Reverse rotation in reverse — many implements will be damaged if operated in reverse.
MF 65 PTO speed table (proportional engine speed mode, 18/50 ratio): Engine 1500 RPM = PTO shaft 540 RPM = belt pulley 1002 RPM = belt speed 2360 ft/min. Engine 2000 RPM = PTO shaft 720 RPM = belt pulley 1340 RPM = belt speed 3148 ft/min. Proportional ground speed mode: 1 PTO shaft revolution per 19 inches (approximately) of rear wheel travel.
Source: MF 65 Workshop Service Manual (manual id=12). Pack ball-and-roller bearing grease (~1/8 lb) in housing area between bearing cups during reassembly. Lubricate oil seals with brake fluid before installation.
MF 65 PTO bearing preload: tighten cover cap screws (33-38 ft-lbs torque) to draw bearing cup into position. After tightening, it should require 5 to 10 in-lbs torque (a slight drag) to turn the shaft in its bearings. To adjust preload: remove shims to increase torque, add shims to decrease torque.
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Data last verified April 2026. Sources: Massey Ferguson parts books, manufacturer catalogs, community submissions.