14.1. Checks and adjustments

Moments of an inhaling, N · m
The directing fingers of supports of back brakes       63–82
Arms of fastening of supports of back brakes       49–74

Adjustment of a tension of a belt of the drive of auxiliary units
On some models of later release the tension roller for adjustment of a tension of a belt as adjustment is carried out due to movement of the generator or the compressor of the conditioner is not established.

Adjustment of frequency of rotation of a bent shaft of the engine idling and qualities of fuel-air mix (engines with the RVT system)
Tighten the parking brake and install the gear shifting lever in neutral situation.
Connect a tachometer to the engine and switch off everything electric consumers.
Launch the engine and warm up it up to the normal working temperature then let's it work with a frequency of rotation of bent shaft 2500-Z000 mines-1 within 3 min.
Stop the engine and install in an exhaust pipe the device sensor for the analysis of the fulfilled gases.
Launch the engine and leave it to idle. If the electric fan of a radiator turns on, wait until it is switched off.

Fig. 14.1. An arrangement of the screw (1) of adjustment of air supply during the operation of the engine idling


Check the frequency of rotation of a bent shaft of the engine idling and compare it to specifications. If frequency differs from demanded, adjust it rotation of the screw of air supply (fig. 14.1).
For adjustment of composition of fuel-air mix disconnect branch pipes of system of an admission of air from the air filter and close them suitable caps.
Launch the engine and warm up it up to the normal working temperature, let's it work with a frequency of rotation of bent shaft 2500-Z000 mines-1 during
Also leave 3 min. to work in the idling mode. If the electric fan of a radiator turns on, wait until it is switched off.
Check contents WITH in the fulfilled gases and compare result to specifications. If contents WITH differs from demanded, remove a rubber cap from the air filter and adjust contents WITH, rotating the adjusting screw of air supply by the special Mazda tool §49 HC27 140. The adjusting screw is supplied with an oval convex head, and the Mazda tool §49 HC27 140 is manufactured precisely under its size therefore independently it is impossible to manufacture such tool.
Establish into place a rubber cap, then adjust the frequency of rotation of a bent shaft idling.

Check and adjustment of a corner of an advancing of ignition (engines with the RVT system)
This operation in principle is similar to the operation given in the subsection "Check and Adjustment of a Corner of an Advancing of Ignition" (see section 2 "Adjustments and maintenance"), but before check and adjustment of a corner of an advancing of ignition in addition disconnect and close a stopper a tube of the vacuum regulator of the distributor of ignition. Upon completion of check establish a tube into place and check that the vacuum valve of a delay of a corner of an advancing of ignition was installed correctly.

Check of back disk brakes
Block forward wheels, lift a back part of the car and fix it on support. Remove back wheels.
Through an opening in a back part of a support check thickness of overlays of brake shoes which has to be not less than 1,0 mm, otherwise replace all four brake shoes of back brakes.
Check hoses of the brake system for existence of cracks and cuts, check supports for tightness and lack of traces of damages.
Check back brake disks for existence of deep scratches and if they are, replace them.
Establish back wheels and lower the car on the earth.

Check and adjustment of a damper of the carburetor (engines with the RVT system)
Completely open a butterfly valve then a finger press draft of a damper of the carburetor and check that it moved slowly. After a draft otpuskaniye it has to return to a starting position quickly.
For adjustment of a damper of the carburetor launch the engine and warm up it up to the normal working temperature.
Stop the engine and connect a tachometer.
Increase the frequency of rotation of a bent shaft of the engine up to 3500 min.-1 then slowly reduce the frequency of rotation and check that the lever of a butterfly valve concerned draft of a damper with a frequency of rotation of 3000+100 min.-1.
If it is necessary, weaken a lock-nut and establish draft in required position.
After adjustment tighten a lock-nut and remove a tachometer.

Replacement of the fuel filter (engines with the RVT system) the Fuel filter is located in the left part of a motor compartment.
For collecting the proceeding fuel put a fabric piece under the fuel filter.
Turn out hollow bolts and disconnect hoses from the fuel filter. Remove washers.
Turn off nuts and remove the fuel filter. Weaken clamping a bolt and remove an arm.
Check rubber elements of fastening of the filter for existence of wear and if necessary replace them.
Install the new fuel filter. Installation is carried out to the sequences, the return to removal.

Replacement of the air filter (engines with the RVT system)
Turn out four bolts fixing a cover of the air filter and the measuring instrument of a consumption of air to the lower part of the case.
Uncover and take the air filter.
Wipe an internal surface of a cover and the lower part of the case. If it is necessary, it is possible to remove completely the lower part of the case, having turned off nuts and having disconnected an air supply hose.
Install the new air filter. Installation is carried out to the sequences, the return to removal.

Replacement of brushes of screen wipers
Brushes and levers of screen wipers of the models made since October, 1984 are modified. The brush fastens on the lever by means of a hook and the hinge, but not a pin and a nest.
For removal of a brush turn it at right angle in the beginning to the screen wiper lever then disconnect from a hook and remove from the end of the lever. Installation is carried out to the sequences, the return to removal.