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4.0 The PTO shaft
The PTO shaft is a very important part. It provides the driving force from the tractor and – if
installed, used, and maintained correctly – ensures safe use of the machine. The PTO shaft
has its own CE certificate. Make sure to read the PTO shaft manual. It is located on the PTO
shaft itself.
Fig. 10
4.1 LENGTH OF THE PTO SHAFT
The length of the PTO shaft is very important. If it is too long, it may damage the drive of the
tractor and/or the Verti-Drain
®
. If the overlapping length of the sleeves is, at any time, shorter
than 150 mm, the PTO shaft may be damaged.
*The length will vary when the machine is raised or if another
tractor is used.
To make sure the length of the PTO shaft is correct, after purchase or when using another
tractor, carry out the following steps:
(see Fig.10)
1. Measure the distance between the PTO connection of the tractor and that of the Verti-
Drain, from groove to groove, when the machine is at the correct angle on the ground
and attached to the tractor.
2. Measure the distance B of the PTO at its shortest position, from locking pin to locking
bolt.
3. Split the PTO in two and remove the protective cover from both ends.
4. Both the sleeve ends and the cover ends have to be shortened: (B-A) + 75 mm (3”).
5. Debur, grease, and assemble all parts.
6. Mount the PTO on the Verti-Drain side.
7. Attach the other end of the PTO to the tractor.
8. Check the overlap of the sleeves.
*Never use the machine if the protective cover of the PTO is damaged.
Replace it first.
