During operation, it may be necessary to adjust the full throttle opening of the carburetor and the position of the pedal
If on cars of the UAZ-31512 family, when you press the pedal all the way to the floor, the throttle valve does not open completely, then release the lock nut 2 (Fig. 1) and, turning the clutch 3, shorten the pedal rod.
Shorten it enough to ensure full opening of the carburetor throttle, but the compensation spring 7 must not be fully compressed.
Fig. 1. Carburetor control for cars of the UAZ-31512 family
In the released position, the pedal should be 80-95 mm from the sloping floor.
Tighten locknut 2 after adjustment.
If the length of the thread on the accelerator pedal rod is not enough to make the adjustment, then change the length of the rod 15 by screwing or unscrewing it from the tip 17, for which loosen the lock nut 16 and tighten it after adjustment.
Periodically lubricate the rubber bushings of the roller 6 of the throttle valve with brake fluid, and the flexible rods of the manual control of the air and throttle valves with Litol-24 grease.
Maintenance of the throttle control drive of the carburetor of UAZ-3741 family cars is carried out in the following order:
Fig. 2. Control of the carburetor of cars of the UAZ-3741 family
1. Disconnect the end of the spring from the lever 4 (Fig. 2) of the roller.
2. Loosen lock nut 5.
3. Pull the lever 4 of the roller back to the position of full throttle closing (as far as the idle screw allows) and, holding it in this position, set the pedal 1 together with the roller 2 to such a position that the distance from the floor to the upper end of the pedal is 120 ± 5 mm .
4. Tighten the lock nut 5 in this position and hook the spring onto the lever 4 of the roller.
If the drive is adjusted correctly, then with the pedal released and the manual control knob fully retracted, the throttle should be closed, and when the pedal is depressed to the full, it should be fully open.
Maintenance of manual throttle and choke actuators
Adjust the manual throttle by changing the place where the linkage is attached.
When fixing its end in the articulated coupling of the lever 13 (see Fig. 1), ensure that the throttle valve with the handle 20 pushed in to the full is completely closed, and when the handle is pulled out, it is open at least 3/4 of a turn .
Adjust the air damper drive also by changing the attachment points of the rod, the end of which is fixed in the swivel coupling of the air damper lever.
When the drive handle is fully extended, the air damper should close tightly.
When the air damper is fully open, the actuator handle may not reach the stop in the panel by 2 mm.
In case of tight movement of the rods in the shells, lubricate them with Litol-24 grease.
To lubricate the rod, pull it out of the shell, first releasing the screw securing the rod to the lever.
Adjustment of manual drives of the throttle and air dampers of cars of the UAZ-3741 family is similar to that described above.
Nominal throughput of K-126GU carburetor jets, (ml/min)
Main fuel jet
Main air jet
Idle jet block: