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4.2 OPERATION OF THE PTO SHAFT
To ensure correct operation of the PTO, check the following items:
1. During operation, the angle of the joints must never be greater than 30 degrees.
2. The rotating points should be aligned.
3. The overlap of the sleeves must be at least 150 mm.
4. Never use the machine if the protective cover of the PTO is damaged.
5. For lubrication, see section 13.0: Maintenance.
4.3 SLIP COUPLING INFORMATION AND MAINTENANCE
The slip coupling will protect your machine from damager if used and maintained properly.
The following items are important:
1. The length of the spring is normally adjusted to 33 mm (1.300”).
2. When the slip coupling slips, the bolts/nuts may be turned a quarter turn at a time until
the minimum spring length of 31.5 mm (1.250”) has been reached. Further compression
will overload the machine.
@ When the bolts/nuts are over-tightened, the machine will eventually be damaged
or dangerous situations can occur.
3. The slip coupling must be receive monthly maintenance. Do this as follows:
-
Remove the upper PTO cover from the machine.
-
Loosen all bolts/nuts 2 turns.
-
Run the machine in the field at a very low speed.
-
If the coupling slips, stop after 10 seconds.
-
If the coupling does not slip, loosen the bolts further or proceed to the (annual)
maintenance.
(see point 4 below).
-
Once the coupling has slipped, retighten all the bolts/nuts to the point at which the slip
coupling functions properly again.
* Do not immediately retighten it to the previous setting.
4. Annual maintenance:
-
Remove the PTO from the machine.
-
Carefully check all parts of the PTO.
-
Replace all parts that are damaged.
-
Disassemble the slip coupling by removing all the bolts/nuts that hold the springs
together; this should cause the slip coupling to fall apart.
-
Lay out all the parts and check them carefully. If any parts are damaged or worn, replace
them.
-
Clean all parts that interlock or engage.
-
Reassemble all the parts and tighten the bolts and nuts until the springs are adjusted to
33 mm (1.3”).
-
Grease both sleeves and reassemble the two PTO halves.
-
Reassemble the PTO and mount it on the machine.
-
If necessary, adjust the springs of the slip coupling as described previously.
@ The slip coupling protects the machine from short-duration overloading, if properly
adjusted. Long-duration overloading will damage the machine. The slip coupling
provides no protection for this. Do not overload your machine.
