Rear Pto Control - Belarus 1822.3 Operator's Manual

3.6.2 Rear PTO control

The rear PTO is controlled with a control lever 1 of the switch 24 (figure 3.7.2), located on
the side console. Moving the lever 1 by means of a cable 6 and a rod 12 turns a lever 22 of a cock
controlling the oil flow, supplied to the PTO friction clutch piston and to the PTO brake piston. To
make the friction clutch engage smoothly, a damping device 9 on a bracket 8 is mounted at the
entry to the friction clutch.
The lever 1 has two positions:
- extreme front position – "PTO engaged" (PTO friction clutch engaged);
- extreme rear position – "PTO disengaged" (PTO end extension brake engaged);
The lever 22 of the oil flow control cock has two fixed positions – upper "PTO en-
gaged" and lower "PTO disengaged";
The PTO begins operating only with the engine running (i.e. when there is pressure
in the transmission hydraulic system).
The rear PTO control is adjusted as follows:
- set the lever 1 of the switch 24 into the extreme rear position, and the lever 22 of
the PTO control cock 13 – into the lower position;
- changing the length of the stem 5 of the cable (by way of screwing the fork 3 in or
out, having previously loosened the lock nut 4) and the rod 12 (by screwing it on or off the
stem, having previously loosened the lock nut 11) bring the holes in the fork 3 and the
lever 23 of the switch 24 together, as well as the holes in the rod 12 and the lever 22 of the
PTO control cock, connect them by pins 2 and splint.
- after adjustment tighten the lock nuts 4;
- check function of the control mechanism. Under the applied pressure of not more
than 30 N the lever 1 of the switch shall move without seizure and clearly get fixed in two
positions.
1 – control lever; 2 – pin; 3 – fork; 4 – lock nut; 5 – cable stem; 6 – cable; 7, 8, 14 – bracket;
9 – damping device; 10 – drain hose; 11 – lock nut; 12 – rod; 13 – rear PTO control cock; 15, 19 –
gasket; 16 – brake hose; 17 – friction clutch hose; 18 – flange; 20 – oil supply hose; 21 – damping
device hose; 22 – lever of PTO control cock; 23 – switch lever; 24 – switch.
Figure 3.6.2 – Rear PTO control.
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