Clutch Case - Belarus 1822.3 Operator's Manual

3.2.5 Clutch case

In the clutch case 10 (figure 3.2.7) a drive of a dual-speed continuous rear PTO as well as a
drive of oil pumps for HLL and hydraulic system transmission are located.
A driving shaft 7 of the continuous PTO drive has a toothed rim, which is in constant mesh
with a gear 24, and splines, on which a gear 12 is mounted. This gear engages a gear 20 of oil
pump drive, and a lock ring prevents it from axial movement. The driving shaft rotates in a roller
bearing 6, mounted by means of a gasket 5 and a collar in a shifter bracket 2, which is attached to
the clutch case 10 by way of threaded bolts 3 through a gasket 4. Inside the shaft 7 there is a
heavy-duty a shaft 1, which transfers torque to the gearbox input shaft through a splined bushing
13. The gear 12 is mounted on the case 10 through a ball bearing 11, which is prevented from ax-
ial movement by mounting a strap 8 and bolts 9. Switching between the rear PTO modes (standard
and economy) is effected by a toothed clutch 23, a lever 22 and a switching shaft 38, having flat-
tened surfaces for the wrench. To switch between the modes it is required to loosen a securing bolt
39 and turn the shaft 38 until the clutch is engaged, after that tighten the securing bolt. To switch
the standard mode it is required to turn the shaft contraclockwise until it stops, to switch the econ-
omy mode it is needed to turn the shaft clockwise until it stops.
The HLL oil pump is driven through the gears 12 and 32, and the transmission hydraulic
system drive – through the gears 12, 32 and shafts 31, 37. The driven gears 20, 24 are mounted
through roller bearings 14 on a driven shaft 16 of the continuous PTO drive. The gear is prevented
from axial movement by mounting a washer 15 and a lock ring on the shaft 16. The clutch en-
gagement shifter is controlled by means of a fork 30, secured by a bolt 29.
The
BELARUS-1822.3/1822 .3 transmission has the clutch case with a drive for a single-speed
continuous rear PTO for RPTO operation in a standard mode. In this connection the clutch case has its
own design peculiarities: on splines of the shaft 16 (figure 3.2.7) there is only one gear 24, which is se-
cured by the lock ring. The gear 20 as well as the parts for the rear PTO switching such as the clutch 23,
the lever 22, the shaft 38 are not mounted. The clutch case has no orifice for the shaft 38 installation.
1 – heavy-duty shaft; 2 – shifter bracket; 3, 26 – threaded bolts; 4, 5, 17, 25, 34 – gaskets;
6,11, 14, 27, 35 – bearings; 7 – driving shaft; 8 – strap; 9, 18, 39 – bolts; 10 – clutch case; 12, 20,
24, 37 – gear; 13 – splined bushing; 15 – washer; 16 – driven shaft; 19, 33 – cover; 21 – securing
bolt and wire; 22 – lever; 23 – toothed clutch; 28 – lock ring; 29 – securing bolt; 30 – fork; 31 –
shaft-gear; 32 – pump drive gear; 36 – nut; 38 – shaft.
Figure 3.2.7 – Coupling clutch case assembly
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