952.5-0000010 OM
130
6. Safety clutch, as indicated in Figure 4.9.2, shall be installed only from the side of
PRS of the drive of the implement coupled, other method of mounting will not ensure the
excess of timely protection of the tractor PTO shaft from the maximum permissible torque.
After lengthy downtime check the implement safety clutch technical condition.
Figure 4.9.2 – Safety clutch mounting scheme
7. Mounting of the cardan shaft with guard housing together with PTO shaft and
PRS protective devices, with retaining chains both from the side of the PTO shaft and of
the PRS, as indicated in Figure 4.9.3, ensures cardan joint safety.
Figure 4.9.3 – Safety cardan shaft mounting scheme
8. When the cardan shaft is used for the first time it is necessary to check the car-
dan shaft length, and to adjust it to the operating conditions with tractors “BELARUS-
952.5” when needed. For more detailed guidelines on cardan shafts see the
technical
documentation enclosed. Contact the cardan shaft manufacturer when needed.
9. The length of the cardan shaft maximum driven apart (which is permitted for op-
eration) shall be of such type when the one part of the cardan shaft enters another for not
less than L
2
=150 mm. If the value is below L
2
=150 mm (Figure 4.9.4, view
А
) the cardan
shaft must not be operated. Sufficiency of overlapping L
2
can be checked by rotation or
lifting of the implement coupled.
Figure 4.9.4 – Choice of the cardan shaft length
10. If the tractor and the implement coupled are positioned linearly when the cardan
shaft is pushed in full, check if there is a sufficient clearance L
1
(Figure 4.9.4, view C) be-
tween tube face and universal joint yoke end butt. Minimum permissible clearance
L
1
shall
make not less than 50 mm
11. After the cardan shaft coupling regularize all the protective devices, meanwhile
fix the guard shaft housing from rotation with the chains as indicated in Figure 4.9.3.
