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Rare-OLD CARS

MOSKVICH-412

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TROUBLESHOOTING BRAKE SYSTEMS AND METHODS FOR THEIR SOLUTION

-------------------------------------------------- ------------- Cause of Failure Solution -------------------------------------------------- ------------- Increased brake pedal travel Leaking brake fluid from the system ........................... Identify the cause of the leak ................................... and correct replacement of damaged parts, or tightening of threaded connections. Bleed the system. The penetration of air into the brake system due to lack of fluid in filling the master cylinder reservoir ........................ Fill ................................... brake fluid in the Filling the master cylinder to the normal level, and bleed the system Poor performance of the main lip seals Cylinder ........................... Disassemble the master cylinder and replace defective parts Improper installation of the brake pedal full speed ............. Measure ................................... full pedal the middle ground for their feet. In the course of less than 150 mm 6 all the way to the floor mat, perform its installation change length of the pushrod The increase in the gap between the pads and drum brake in the rear mechanism due to the malfunction of automatic Device ......................... A large hole in the the brake drum when removing the wheel, determine block, the which the "toe" (end) block, which is based on the piston wheel the cylinder is moved by pressing and releasing the pedal more than to 1.5 mm. Remove the drum and measuring the diameter of blocks in the its middle part, make sure the correct setting of the defect; less than 229 mm diameter indicates a malfunction automatic device. Loosen the swivel action of the spring permutation of the blocks of one of its ends in a number located on the edge of the pad hole d5 mm. If this performance Automatic devices are not restored, replace the split ring. The order of substitution is specified in the relevant section. Spontaneous lockup car Improper adjustment of the vacuum amplifier ................... Adjust the power .................................. (see Sec. "The assembly and adjustment of the vacuum booster") Sticking to the main valve piston housing an amplifier ...... Handle the parts .................................. central valve powder of molybdenum disulfide Clogged holes in the lid of the main tank filler Clean the hole of the cylinder .......................... Incomplete return of the brake pedal back after ottormazhivaniya ................... Remove the brake pedal and clean axis of dirt, corrosion, nicks, burrs smooth out a plastic sleeve is inserted into the opening pedal. Replace snatch pedal spring Swelling of the wrist and the main wheel cylinders .................. Drain .................................. brake fluid and all hydraulic flush system with fresh brake fluid, replace damaged rubber parts. Pour the recommended system brake fluid and bleed Clogging the holes compensating the brake master Remove the filling of the cylinder .......................... tank and connecting hub. Clean with a soft wire, 00.6 mm compensating holes Overlapping of edge holes compensating the cuff because partial withdrawal of the piston back with a fully tempered Pedal ............................ Disassemble the master cylinder, Rinse parts with fresh brake fluid. Assemble the main cylinder and make sure the pistons are moving away vigorously, releasing compensating holes heated rear drum brake because of spontaneous braking wheels The weakening or failure of a coupling spring brake pads ........... Replace the spring .................................. Non-return pad ottormozhennoe state due to swelling wheel cylinder cups ......... Remove the brake drum, brake pads, Remove the wheel cylinder pistons, turning them 90 °. Rinse thoroughly with fresh details of the alcohol or brake fluid and replace damaged seals Bias pads due to violations of the provisions of supports due to deformation of the panels .................. Remove the brake drum and shoes and straighten the sheets with the support legs to parallel provisions with respect to the drum pads Overly stretched cables parking brake actuator system ....... Adjust the tension of the cable .................................. Improper installation of the adjusting cam axis unclasping lever parking brake in the rear brake Mechanism ......................... Adjust eccentric shaft release lever parking brake actuator system corresponding to the rear brake mechanism Sticking the drive cable parking brake system in the guide tube to shield the rear brake ........................ Adjust the eccentric shaft .................................. release lever parking brake actuator system corresponding to the rear brake mechanism. Disconnect the cables remove them from the guide tubes, clean and lubricate after re-assemble the cables and check the free movement of cables in tubes heated brake disc front wheel because of spontaneous braking Sticking pads due to excessive pollution of support surfaces Remove the bracket ............................. pads. The bearing surfaces pads and braces clean. Allowed for removal of contaminants application of white spirit followed by washing with soapy water and drying with compressed air Jamming of the pistons due to contamination and corrosion in the cylinder bracket ................... Remove the bracket, remove the contamination and corrosion, replace the covers antisplash When braking the car enters or takes away Contamination or lubrication Brake .................... Clean the brake .................................. dirt and oil. Shoes with straps replace oily. At the same time check the cause of lubricating pad and remove it (check state of the cuff in the wheel hubs and housingxsaxes, as well as the state cuff wheel brake pistons) Clogged pipes or hoses, brake fluid to the leads cylinders on one side of the vehicle ................................. Disassemble and clean .................................. pipelines hoses and couplings with alcohol or with fresh brake fluid and blow compressed air, if necessary, referred to the details replace Bullies on the working surface of the rear drum brakes ... Remove .................................. drum and clean damaged areas. If necessary, wasting, or proshlifuyte change the drum Lock the rear wheels before the front because of the incorrect adjustment pressure regulator rear brake ...................... Adjust the pressure regulator .................................. (See Sec. "Disassembly, assembly and adjustment of the pressure regulator") Loose fit in the slot the ball sleeve of the pressure regulator Rear brake ........................................... ................................. Disassemble the regulator; light strikes hammer through the mandrel ball calibrate the slot liner Overly stiff movement of the piston in the rear pocket of the pressure regulator brake control ............. Dismantle, replace the cuff piston, mirror shells clean of dirt, if necessary, pocket change The absence of leakage between the cavities of the regulator due to the destruction Seal ....................... Disassemble the regulator, wash all parts, replace the damaged seal need to brake the vehicle with excessive force when pressing the brake pedal Contamination or lubrication pads brake shoes .............. ................................. Clean brakes on the wheels Oil and dirt. Replace the pads with the greasy plates or carefully Clean the surface of the pad with a file and flush with hot water soap and a hair brush Poor fit brake pads to the working surface of the brake Drums .......................... sawdust pads protruding place a file. New pads opilivat should not, because after the run vehicle about 500 miles they run in The use of linings with reduced frictional properties ............ Replace the pads ................................... Pollution of the air filter amplifier ............................. ................................... Remove and wash the filter with gasoline Damage to the diaphragm piston amplifier ............................... Replace the diaphragm ................................... Improper installation or damage to the outer sleeve of the main brake cylinder (sticky in the working edge of the cuff groove) .... Remove .................................. master cylinder, remove the retaining ring and the outer sleeve. The shank of the piston clean from dirt and grease. Set the correct cuff, if necessary, replace Damage to the surface of the piston body amplifier ..................... Disassemble .................................. amplifier, the piston housing replace, assemble and adjust the power Damage or contamination of the piston sleeve housing the amplifier ............ Replace .................................. cuff, the piston housing Clean dirt and grease Failing to comply with the check valve seal ................... Replace the seal .................................. Damaged O-ring caps amp .................... Remove the master cylinder .................................., replace O-ring Weak action parking brake actuator system The stretching and weakening of the cables of the drive ............................... Adjust the tension of the cables ................................. adjustment mechanism in the equalizer cables Violation of installing an eccentric axle release lever back brake ................................................ .. ................................. Remove the brake drum and loosen the tension of the cable adjusting mechanism for an equalizer cables. Adjust the release lever cam axis, or if necessary, by turning the spacer bar to 180 °. Thereafter Adjust the tension of the rope Sticking to the cable guide tube shields for rear brake Disconnect the cables ....................... mechanisms, clean guide tubes and lubricate cables. After installing the cables, make sure in their free movement in the tubes creaking and screeching brakes Lubrication friction linings due to leakage of the lubricant ... Eliminate leaking ................................ lubricant Friction pads gently clean with warm soapy water Difficulty in moving individual pistons in the cylinders of the disk bracket brake cylinders due to excessive contamination or swelling of the wrist due to falling mineral oil .................. Make ................................ disassembly and assembly brackets replacement of damaged parts, clean the surface of the cylinder. In carrying out these operations follow the instructions section. "Repair of the front brake" To eliminate leakage of brake fluid in the ground connection flexible hose to the bracket or eliminate leakage at the site of the accession flexible hose to a tee the rear axle should be released opposite the tip of a flexible hose by unscrewing the nut of the pipeline and removing the nut of flexible hose to the bracket. In the absence of further progress in the pedal, open the exhaust valve air from the small cylinder bracket. If the pedal in this case was an extra turn, looking for damage to the seals in the seal c and d. In case of unsatisfactory performance brake fluid cuff d be pumped inside the cavity cistern next to the amplifier, in the other cavity. In the cases described above, the master cylinder and disassemble correct the problem. When inhibition of spontaneous defect can cause the vehicle provide compensatory holes overlap the edges of cuffs. In this If remove the master cylinder and a soft wire with a blunt the end of the probe through the cuff edge of the hole compensation. If the tip of the wire without encountering an elastic resistance, is depth significantly greater than 2 mm, the hole is not blocked edge of the cuff. If wire is inserted into the hole compensation, met with the elastic resistance, remove the master cylinder. Opening of the compensation the hole after removing the master cylinder indicates an incorrect adjustment of the amplifier. Since the master cylinder removed, in this case it is advisable to make a hand a few clicks on the piston of the main cylinder to determine the intensity of the return of the pistons in the original situation. If the holes on the compensatory removed from the vehicle master cylinder were overlapped edges of the cuff, dismantle the master cylinder. The causes of the defect can be described: swelling of the master cylinder seals; contamination of the mirror of the master cylinder; failure of the return spring.
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