2.4. Diagnostics of malfunctions of the transfer case and intermediate shaft

(Malfunctions of other systems are also mentioned in this section, they are designated by a symbol •)

Cause of defect

Elimination method

Vibration of a floor in a zone of front seats at start-off of the car from the place and dispersal (for more details see. Transfer case)

u Weakened fastenings of the transfer case and/or the transmission

Tighten fastenings of units, check centering of the transfer case concerning the transmission (see. Transfer case)

u Are damaged support of the transfer case, a transmission support

Replace support, center the transfer case concerning the transmission (see. Transfer case)

Centering of the transfer case concerning the transmission is broken (see. Transfer case)

Center the transfer case concerning the transmission (see. Transfer case)

Bolts and/or flanges of the elastic coupling are deformed

Replace the deformed details (if necessary – and an intermediate shaft assembled)

Bolts of fastening of the elastic coupling to its flange on secondary to a shaft of the transmission and/or a nut of a flange of an intermediate shaft to a flange of the leading shaft of the transfer case weakened

Tighten fastenings, check centering of the transfer case concerning the transmission (see. Transfer case)

Vibration of a floor in a zone of front seats at the movement of the car with a speed of 80-100 km/h on direct transfer

The raised imbalance of an intermediate shaft: the relative positioning of details at assembly is broken, stratification of the elastic coupling, the wrong assembly or wear of the hinge of equal angular speeds, are lost balancing washers under bolts of the elastic coupling

Replace an intermediate shaft assembled

Bolts and/or flanges of the elastic coupling are deformed

Replace the deformed details (if necessary – and an intermediate shaft assembled)

Bolts of fastening of the elastic coupling to its flange on secondary to a shaft of the transmission and/or a nut of a flange of an intermediate shaft to a flange of the leading shaft of the transfer case weakened

Tighten fastenings, check centering of the transfer case concerning the transmission (see. Transfer case)

Strong vibration of the engine

See. "Strong vibration of the engine" in the section Diagnostics of Malfunctions of the Engine

Jamming of the hinge of equal angular speeds: there is no lubricant in the hinge, its details, the wrong assembly are deformed

Disassemble the hinge, clear details, replace lubricant. At strong wear or deformation of details replace an intermediate shaft assembled

• Jamming of cardan hinges of forward or back shaft

Grease hinges. If lubricant did not ustanit jamming, replace the hinge or a shaft assembled

• The raised imbalance of driveshafts

Replace shaft assembled

The raised imbalance of interaxal differential because of factory defect or violation of a relative positioning of details at assembly

Replace differential

Noise at the movement in turn or pro-slipping of wheels

Teeths of satellites or gear wheels of drives of bridges are worn-out or painted

Replace the worn-out or broken details

Hard rotation of satellites on an axis

And in openings of satellites smooth out agnails on an axis a file, replace the worn-out and deformed details

Wear of a spherical (internal) surface of the case of differential

Replace the case of differential or differential assembled

Jamming of gear wheels of drives of bridges in the differential case

Replace the worn-out and deformed details. Establish by selection of basic washers an axial gap of gear wheels of 0-0,10 mm, controlling the moment of resistance to rotation (see. Transfer case)

Big axial gap of gear wheels of drives of bridges in the differential case

Establish by selection of basic washers an axial gap of gear wheels of 0-0,10 mm, controlling the moment of resistance to rotation (see. Transfer case)

Hardly transfers or blocking of differential join

Hardly the sliding coupling on vents of a nave or the case of differential moves

Clear vents of dirt, cut agnails a file, replace details with the crumpled vents

Zaboina on teeths of pryamozuby (small) gear wheels of the highest and lowest transfers, on teeths of couplings and vents of a shaft of the drive of the forward bridge

Clear details, cut agnails a file, replace details with the crumpled vents or worn-out teeths

The fork or rod is deformed

Correct or replace details

Drive levers are deformed

Correct levers

Jamming of levers of the drive on axes

Investigate connection, clear details of dirt, if necessary replace an axis of the lever, its plug

Too dense oil in the transfer case

Use oil according to climatic conditions (see Appendices)

Spontaneous switching off of transfers or blocking of differential

Damage or wear of teeths of gear wheels and couplings, zaboina on vents

Replace worn-out couplings or gear wheels. Zaboina eliminate with a file

Drive details are deformed

Correct or replace details

Springs of clamps lost elasticity, dirt in openings of clamps, wear of clamps

Clear details, replace worn-out

Leak of oil from the transfer case

Wear of epiploons

Replace epiploons

Strong wear, zaboina on surfaces of shaft and rods on which epiploons work

Smooth out small damages a fine-grained skin and a zapoliruyta. Establishing a new epiploon, it is possible to nedopressovat a little it, without allowing a distortion (if necessary having enclosed under it remote laying up to 1 mm thick) that the edge of an epiploon worked by not worn-out part of a shaft. At considerable damages – replace shaft and epiploons

Fastenings of covers of a case of the transfer case weakened, their laying is damaged

Tighten threaded connections. Replace laying (it is possible to use sealant)

Traffic jams are leaky wrapped

Tighten traffic jams (it is possible to put them on sealant)

The cap-type nut of the drive of a speedometer on the transfer case is not tightened

Tighten a nut

On a cover of the hinge of an intermediate shaft lubricant traces are visible

The protective cover of the hinge is damaged, its collars weakened

Examine the hinge, in the presence of a side play – replace. If there is no side play, and it is a little dirt in lubricant, without disassembling the hinge, remove with the screw-driver as much as possible lubricant and put new (SHRUS-4). Replace the damaged cover, tighten (replace) collars