Reduction gear of hydraulic pump drive motor grader DZ-98B

The reduction gear is intended to drive the compressor, pumps of motor grader hydraulic system and to couple the engine shaft with the clutch shaft.
1- NSH˜-71L pump;
2- sealing ring;
3- NSH˜-50 pump;
4- bushing;
5- splined
external coupling;
6- splined internal coupling;
7- circlip;
8- oil baffle;
9- washer;
10- cover;
11- key;
12- coupling member;
13- bearing cap;
14- filler neck;
15- bearing;
16- driving gear;
17- reduction gear housing;
18- hatch;
19- slide block;
20- journal disc;
21-journal;
22-collar,
23- intermediate gear;
24- compressor bracket;
25- special bolt for adjusting compressor belt tensioning;
26- nut;
27- gear of hydraulic pumps drive;
28- shaft;
29- compressor drive gear;
30- NMSH˜-25 pump;
31- locating pin;
32- drain plug;
33- distance ring;
34- compressor drive pulley
The reduction gear consist of two housing, gears 16,23,2,29 which rotate the shafts of the gear pumps and gears of the compressor drive.
The NSH-71L pump of the l.h. rotation is designed for driving the mould board and the additional working implements.
The NSH-50 pump serves for driving the clutch and steering control servomechanism.
The NMSH-25 pump is designed for lubricating the power transmission unit.