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5.2.2 PTO Shaft
Equipment Required
Manually operated grease gun supplying NLGI #2 Molybdenum Disulphide Grease to M6/M8
grease nipples
IMPORTANT: Proper and correct frequency of lubrication of all the rotating and sliding parts of the various PTO
shafts fitted to the machine is essential for the correct function, longevity and reliability of the shaft. Insufficient
lubrication or contamination is one of the most frequent causes of PTO shafts.
The joints, telescopic member and shields must be lubricated at intervals related to the environment and working
conditions for the machine.
Bondioli & Pavesi recommend NLGI #2 Molybdenum Disulphide Grease on all crosses, telescoping members
and shields. This grease contains additives which offer corrosion resistance, strength and adhesion at extreme
pressures (EP) along with other benefitting properties.
When lubricating cross kits, pump grease until the grease purges from all four bearing caps. Pump the grease
gradually. Avoid high pressures, especially those possible from pneumatic equipment.
The U-joint and CV joint assemblies on each of the different shafts are accessible by rotating the plastic safety
shield until the cut-out hole allows the grease point to be exposed. When maintaining the shafts inspect the U-
joint for movement by holding the shaft on either side of the U-joint and if there is noticeable play in the driveline,
replace the U-joint before it causes severe damage to the driveline.
Figure 5.4 shows each of the respective shafts for the various models.
Figure 5.4 – Input Shaft Type Locations
Input Shaft
Centre Coupling
Inner Shaft
Outer Shaft
Table 5.4 – Input Shaft Type Locations
NOTE: All values throughout this section are given on the assumption that a manually operated grease gun is
used to carry out the greasing procedures giving a predicted quantity of 0.8-1.0g of grease per pump.
For reference to the required grease maintenance points on each of the respective shafts see below..
WARNING! It is mandatory to switch the combustion engine off and disengage PTO and ensure that
the tractor and machine is stopped, the ignition key is removed from the dashboard and the parking
brake is engaged before leaving the driver’s seat and proceeding to carry out maintenance on any of the
PTO shafts.
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