KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
160
In order to clean the filter, undo cover 12 and carefully take it off along with pressure relief
piston 11 and filter 2. Wash the filter in benzine and blow it down with compressed air. Per-
form the assembly in the reverse order.
Brake system unit maintenance
Taps and valves do not need any special maintenance. Replace taps in case of any defects
detected in the course of operation.
Maintenance of connecting heads consists of systematic inspection, cleaning from dirt. Con-
necting heads are closed with covers protecting them against the ingress of dirt, snow, mois-
ture.
7.5.9 Maintenance of hydraulic systems of the linkage and for steering control
Level check and change of oil in the hydraulic tank of the hydraulic systems of the
linkage and for steering control
Put the tractor on a horizontal ground.
Check oil level in the hydraulic tank via the sight hole 25 (Fig.46); oil should be visible
through the sight hole. Fill clean oil through the grill of filler port 7. When checking oil level in
the hydraulic tank, make sure of the absence of foam generation.
Fig. 45 Pressure controller
1
– pressure relief valve; 2 – filter; 3 – inlet valve;
4
– outlet valve; 5 – housing; 6 – spring;
7
– adjustment bolt; 8 – locking nut;
9
– servo piston; 10 – check valve;
11
– pressure relief piston; 12 – cover
