Massey Ferguson MF 50 Service Reference

Transmission Service

Combined transmission/hydraulic oil type and capacity, gear box change interval, and PTO specifications.

Fluids & Capacities

System	Capacity (US)	Fluid
Transmission / Differential / Hydraulic System One combined reservoir. M-1129A is the ONLY approved fluid for this system.	8 US gal	MF M-1129A Extreme Pressure Oil

10-Hour / Daily

Transmission / Hydraulic System: Check oil level and fill as necessary(Use MF M-1129A only)

50-Hour / Break-In (First 50 Hours Only)

Transmission / Differential / Hydraulic System: Drain break-in oil and refill(MF M-1129A only)

200-Hour

Hydraulic Rockshaft: Grease fitting — 1 to 3 shots only(Lithium base grease — do not over-grease)

750-Hour / Annual

Transmission / Differential / Hydraulic: Drain and refill with fresh oil(MF M-1129A only)

Live PTO Clutch

Dual dry-disc — primary coil spring-loaded 11" dia., secondary Belleville spring-loaded 9" dia.

Independent PTO Clutch

Single dry-disc, 11" dia.

Transmissions

6-Speed: Constant mesh, helical primary reduction gears with spur-type speed change gears. Planetary reduction assembly — 6 forward, 2 reverse.
Multi-Power: Same as 6-speed with 2-stage planetary compounding — 12 forward, 4 reverse.
8-Speed: 4-speed forward sliding gear set compounded by dual-range planetary — 8 forward, 2 reverse.

Shaft: Splined, 1-3/8" dia. ASAE standard

Live PTO (engine speed)	540 rpm at 1700 engine rpm
Independent PTO ("On")	540 rpm at 1700 engine rpm
Transmission PTO (engine)	540 rpm at 1500 engine rpm
Ground Speed PTO	1 revolution per approx. 20" of forward travel