The locks are used to keep the doors closed while driving, in the parking lot and in the event of an accident
Door locks - automatic action, fork type
Due to the teeth of the rotor and the cam, the door is completely closed (on the main tooth) and incompletely closed on the door (on the safety tooth).
When driving with the door not fully closed, a knock occurs, driving with the door open is unacceptable.
Before February 2000, locks were installed on the front doors, the design of which is shown in the figure.
The lock consists of three parts: a locking mechanism 19, a lever mechanism 20 and a latch pin 18.
The lock can be opened from outside and inside the cab, it can be locked both from the outside and from the inside of the cab with the door completely closed.
To open the lock from the outside of the cabin, use the external handle 1 with a drive.
If you grab the outside handle with the lock unlocked and pull it towards you, the door will open.
When the lock is locked, the outer handle has free play. the internal drive 4 is used to open the lock from inside the cab.
If you turn (pull) the handle of the internal drive towards you with the lock unlocked and push the door outward, it will open.
When the lock is locked, the handle of the internal drive has free play.
To lock the lock from the outside, the lock switch 15 is used, and from the inside, the button 7 for turning off the lock.
It is impossible to block the lock when the door is open, neither from the outside nor from the inside of the cab. The outer and inner interlocks are connected to each other, and acting on one type of interlock automatically triggers the other.
The fastening of the locking mechanism requires checking its reliability. If you close the door with the locking mechanism loose, the door cannot be opened from the outside or from the inside.
To replace the locking mechanism, unscrew the two screws, remove the mechanism, replace it with a new one, install it on the door, check the operation of all drives and the correct closing of the door, if necessary, check the adjustment of the drives and the spike* lock.
* A latch is installed on the left rear door.
To adjust the spike, you need to loosen its fastening, move it in the desired direction and tighten it.
To replace the outside handle or lock switch, and to make adjustments to the outside and inside drives:
- remove the window handle (for front doors);
- remove the socket of the internal drive 6
- remove the handrail on the door;
- remove the door opening limiter and the limiter lever clamp (for the rear door);
- remove the door upholstery and anti-noise gasket;
- unscrew the bolts of the outer handle and replace the handle;
- unbend the cotter pin of the switch leash and remove the leash;
- unscrew the screws securing the internal drive and unscrew the rod 12;
- unscrew the screws securing the locking mechanism, remove the locking mechanism;
- move the lever mechanism inside the door with the attached parts towards the mounting hatch and disconnect the rod end, remove the internal drive and the lever mechanism with the remaining parts;
- disconnect the external drive, check its operation; drive parts must move freely, and lubricate the rubbing surfaces with engine oil;
- if the linkage is defective, replace with a new one.
Assembly and installation of parts and assemblies is carried out in the reverse order, checking separately the correctness of the adjustments made and the operation of the drives.
The correct operation of the drive is checked with the door open after it is installed, for which, using a screwdriver, move the rotor of the locking mechanism from the "open" position to the "closed" position by two teeth (the lock is completely closed), and then turn the corresponding drive - external or internal.
The rotor should move from the closed position to the open position.
If the spring is weak, this may not happen, then with the drive turned all the way, check the possibility of free movement of the rotor with a screwdriver, touching is unacceptable.
If this does not happen, then it is necessary to screw the tip of the external drive or the rod of the internal drive 2 turns and check the operation again.
After receiving a positive result, check the operation of the locking system.
To do this, again with the door open, move the locking mechanism rotor from the “open” position to the “closed” position and press the rod end 7 down, after that, neither the external nor the internal drive should open the lock.
Special Service The lock and its drives do not require coexistence, with an increase in effort during operation, the hinges must be lubricated with machine oil.
From February 2000, modified locks of increased reliability (due to increased adhesion of the rotor and cam teeth and improved accuracy of parts manufacturing) and reduced closing noise (due to the mass coating of the rotor and cam, latch and material of the base of the locking mechanism) have been installed on the front doors ).
Locks are manufactured under license from Brano (Czech Republic) and consist of a locking mechanism (outer part of the lock) 20, a lever mechanism (inner part of the lock) 21 and a lock latch 19.
The lock can be opened from outside and inside the cabin, blocked with the door completely closed from outside and inside the cabin.
If you grab the outside handle with the lock unlocked and pull it towards you, the door will open.
When the lock is locked, the outer handle has free play.
If you turn (pull) the handle of the internal drive towards you with the lock unlocked and push the door outward, the door will open.
When the lock is locked, the handle of the internal drive has free play.
To lock the lock from the outside, use the lock switch 15, which locks the lock with keys of the corresponding series, and from the inside - with button 7.
It is impossible to block the lock when the door is open neither from the outside nor from the inside of the cab.
The outer and inner interlocks are connected to each other; impact on one type of blocking automatically triggers another.
Changed door locks are not interchangeable with locks of the old design in terms of mounting dimensions and latch design.
To replace the locking mechanism, it is necessary to unscrew the two screws, remove the mechanism, install a new one on the door, check the operation of all drives and the correct closing of the door, adjust the drives and the lock latch.
To adjust the lock latch, it is necessary to loosen the fastening screws 17, move it in the right direction and tighten it (the rest of the operations for replacing various components are similar to the operations with the lock of the design before February 2000).
The locks of the side and right tailgate, their external and internal drive, the locking system are similar in design to the lock systems of the front door of the design before February 2000.
Lock malfunctions and their elimination
Cause of malfunction - Remedy
Door wont close or closes only after a vigorous push
During installation, the stud of the door lock is moved inside the cab - Loosen the stud and push it out 1-2 mm
Incorrect adjustment of the outer or inner drive of the lock - Check separately the correctness of the adjustments of the outer and inner drive
The door is not blocked from outside or inside the car
Incorrect adjustments of the external or internal drive - Make the necessary adjustments separately and check the operation of the locking mechanisms
Door does not close completely (safety tooth only)
The buffer of the locking mechanism interferes with the movement of the lock rotor - Replace the rotor or replace the locking mechanism
Outside door handle not working
Outside handle lug broken - Replace outside handle.
Drive tip cracked or broken 3 - Replace tip or drive.
Outer handle does not return to original position after opening
The drive levers stick - Loosen the rivets of the levers, lubricate the drive and check its operation, in case of a bad result, replace the drive.
The lock mechanism does not work
It is difficult to move (turn) the rotor and the lock cam - Replace the locking mechanism