Do-it-yourself checkpoint repair kirovets

VThe driving shaft is recommended to be disassembled on the OGT-3985 hydraulic stand or by means of pullers.

PProcedure for disassembling the drive shaft of the Kirovets tractor gearbox (K-700, K-700A, K-701, K-702):

1) - Install the shaft vertically so that the end of the shaft (from the side of the first gear) is at the top;

2) - Unlock and then unscrew the screw (22) [fig. one];

3) - Unscrew the nut (21) with the spring (25);

4) - Dismantle the sealing ring with the washer;

5) - Screw the dismantling bolt into the oil line (4) and press out the oil line;

6) - With a puller, grab the pressure plate (32) of the clutch of the first gear, then press it together with the right shaft support assembly;

7) - Remove the right disc (6) from the shaft;

8) - Press the gear (2) together with bearings;

9) - Unscrew and then remove the middle drum retaining nut (3) from the shaft;

10) - Press the pressure plate (36) and the middle drum (3) with the discs;

11) - Dismantle the middle disc (37) assembly;

12) - Open and then unscrew the bolts (33);

13) - Dismantle the middle support (38);

14) - Install the drive shaft so that the end of the shaft (on the fourth gear side) is at the top;

15) - Remove the oil line (57) from the shaft [fig. 2], left support (53), fourth gear clutches, gear (20), third gear clutch, and disc (20);

16) - Dismantle the middle support (33) assembly and the ring (32);

17) - Press together the inner bearing race (34);

18) - Dismantle half rings (35);

19) - Disassemble the assembly units removed from the shaft;

Rice. 1. The drive shaft (1st and 2nd gear) of the gearbox of the Kirovets tractor K-700, K-700A, K-701, K-702.

Video (click to play).

5), 13), 15), 18) - O-rings;

11), 12) - Intermediate rings;

30), 35) - Discs with internal teeth;

31), 34) - Discs with external teeth;

Rice. 2. The drive shaft (III and IV gears) of the gearbox of the Kirovets tractor K-700, K-700A, K-701, K-702.

10), 12), 19), 30), 37), 44), 45), 46), 61) - O-rings;

The K-700 car (Kirovets) is a wheeled tractor produced by the Kirov plant, which has an increased cross-country ability. Its main purpose is deep loosening of the soil, sowing. Also, this technique can act as a tractor.

The engine power on the K-700 tractor reaches 220 horsepower. The first versions of this technique became available in the early 1960s. Oversized radial tires provide excellent traction of the tractor. The control drives and the hydraulic system are designed for heavy loads.

Since the mid-1970s. the following versions of Kirovets appeared: K-700A, K-701. They are equipped with the following types of engines: YaMZ 238, 240. The fuel system on the tractor includes fine and coarse filters. The engine does not lose its performance when the equipment is operated in difficult conditions.

The installed four-stroke 8-cylinder YaMZ-238NM engine is fixed on the front semi-frame. The K-700 tractor is capable of speeds up to 33 km / h. The weight of different modifications of this version of the tractor differs. In particular, the weight of the vehicle is affected by the weight of the engine.

The K-701 tractor with the YaMZ-240BM2 engine produces 300 horsepower and is an excellent alternative to the powerful K-700. This technique has remained in demand in agriculture for a long time. The power plant is in communication with the transmission. The transmission includes a cardan gearbox, axles, a clutch. These spare parts are reliable.

With the help of the checkpoint on the tractor, the driver can change the speed of movement of this vehicle both forward and backward. The peculiarity of the gearbox on the tractor is that there is no clutch. The box itself is mechanical, 16-speed (forward), 8-speed reverse. In this case, there is the possibility of hydraulic control. The gears present have straight teeth, which reflects well the layout of this working device. Toothed couplings are mounted on a shaft with gears. They affect gear changes.

The change of speed modes on this technique occurs without delay. The gearshift mechanism has the function of controlling the flow of the incoming oil. Due to this, the fuel is directed to the spool. The gearshift housing is cast from cast iron. There are special channels here, which are necessary for the direct distribution of the circulating fuel flows. An auxiliary element such as a drive shaft is responsible for shifting gears on the tractor.

The crankcase includes a pedal and control levers. The gearbox has several shafts. The input shaft is driven by a metal flat disc. The intermediate and cargo shafts (refer to the lower part of the crankcase) are distinguished by their efficiency. It should be noted that the load shaft is mounted on bearings. On the existing driven drums of 1st and 4th gears, special synchronizing brakes are installed.

The fork of the drive for controlling the clutches of the cargo shaft is fixed to the reverse clutch. It provides quick engagement and disengagement of reverse gear.

Thus, the operation of the K-700 tractor contributes to an increase in the productivity of agricultural work. The ground clearance of the tractor is 440 mm. This circumstance ensured good cross-country ability of this technique. It should be noted that gear changes are carried out without loss of operating power.

Malfunctions and breakdowns in the checkpoint in most cases result from wear and tear of the component parts available here, individual spare parts. Signs of when the gearbox needs to be repaired on the K 700:

• difficulty in gear shifting;
• spontaneous gear shifting;
• oil leak;
• jerks;
• knocks, noises from the side of the box.

For any of these manifestations, the owner of Kirovets must conduct a general diagnosis of the transmission.

Difficulty shifting can be the reason that the synchronizing brakes have become unusable. The cause of jerking may be due to the fact that the fasteners are loose. Also, the adjustment of the gearbox control drive can resolve the resulting breakdown.