The power take-off with an oil pump is designed to take power from the gearbox and is attached to its crankcase on the right side

Shims are installed between the flanges of the crankcase of the power take-off and the gearbox, with the help of which the meshing of the gears is controlled

If the gaskets are replaced, their total thickness must be maintained.

Kamaz power take-off

Power take-off:1 - plug, 2, 21 - gaskets, 3 - intermediate gear axle, 4, 16 - washer, 5, 23 - bearings, 6 - intermediate gear, 7 - thrust ring, 8 - lock washer, 9 - nut, 10, 12 - rings, 11 - compensator, 13 - set screw, 14 - power take-off housing, 15 - spring, 17 - pneumatic cylinder housing, 18 - cuff, 19 - piston, 20 - pump NSh 32-L-2, 22 - coupling half, 24 - driven gear

In the crankcase 14, the driven gear 24 is placed in ball bearings 23. On the axis 3, on ball bearings 5, the intermediate gear 6 is fixed with a nut 9 and a washer 8 with a folding barb.

The axle is kept from turning by the set screw 13.

When assembling, the screw is screwed into the crankcase until it stops at the bottom of the groove on axis 3, and then unscrewed by 1.5 turns and centered. This makes it possible to move the axis in the longitudinal direction.

The end of the axle with the piston 19 fixed on it with the cuff 18 enters the body of the pneumatic cylinder 17.

In the initial position, the axle is held by spring 15. Oil leakage from the box cavity into the cavity of the pneumatic cylinder is prevented by ring 12.

To connect the driven gear 24 with the pump shaft, a coupling half 22 is used, which is connected to it through the compensator 11.

This connection prevents possible distortions of the axis of rotation of the driven gear and the pump shaft when it is installed on the power take-off.

In the initial position, the intermediate gear is in constant engagement with the gearbox gear.

When compressed air is supplied to the pneumatic cylinder housing, the intermediate gear moves to the left and its ring gear engages with the crown of the driven gear.

The torque from the driven gear is transmitted to the pump shaft.

The power take-off can only be switched on at a pressure of at least 500 kPa in the pneumatic system and with the clutch disengaged.


PTO drawing