Tiger Products Co., Ltd JD 5520 - Manual (Page 71)

Triple Flail Maintenance Section 4-15
MAINTENANCE
BALL VALVES
The ball valves at the hydraulic reservoir may need to be closed during certain
maintenance or repair procedures.
THE BALL VALVES MUST BE OPEN (handle
parallel with valve) WHEN TRACT OR IS RE-STARTED OR PUMP IS COUPLED
TO MOTOR OR P.T.O. ! Failure to do so may result in component failure!
GREASING P.T.O. SHAFTS
After bringing the tractor to a complete stop, shut off the engine and remove the
P.T.O. shaft from the tractor. Slide the shaft apart to expose the grease zerk.
Grease the shaft with 5 pumps of grease and the U-joints until grease protrudes from
caps per the scheduled interval in the maintenance section.