Diagnostics of malfunctions of a distributing box and an intermediate shaft (VAZ-21214, 1994-2006)

Cause of malfunction	Elimination Method
Vibration of the floor in the area of the front seats when starting the car from a standstill and accelerating (see more details. Transfer case)
u Loose transfer case and/or gearbox	Tighten the attachments of the units, check the alignment of the transfer case relative to the gearbox (see Transfer case)
u Damaged transfer box bearings, gearbox bearing	Replace bearings, center transfer case relative to gearbox (see Transfer case)
Disturbed centering of the transfer case relative to the gearbox (see Transfer case)	Center the transfer case relative to the gearbox (see Transfer case)
Bolts and/or flanges of the flexible coupling are deformed	Replace deformed parts (if necessary - and the intermediate shaft assembly)
Loose bolts securing the flexible coupling to its flange on the secondary shaft of the gearbox and / or nuts of the intermediate shaft flange to the flange of the transfer case drive shaft	Tighten the fasteners, check the alignment of the transfer case relative to the gearbox (see Transfer case)
Vibration of the floor in the area of the front seats while driving at a speed of 80–100 km/h in direct gear
Increased imbalance of the intermediate shaft: the relative position of the parts during assembly is violated, the delamination of the elastic coupling, improper assembly or wear of the constant velocity joint, the balancing washers under the bolts of the elastic coupling are lost	Replace intermediate shaft assembly
Bolts and/or flanges of the flexible coupling are deformed	Replace deformed parts (if necessary - and the intermediate shaft assembly)
Loose bolts securing the flexible coupling to its flange on the secondary shaft of the gearbox and / or nuts of the intermediate shaft flange to the flange of the transfer case drive shaft	Tighten the fasteners, check the alignment of the transfer case relative to the gearbox (see Transfer case)
Strong engine vibration	Cm. «Strong engine vibration» In chapter Engine Troubleshooting
CV joint sticking: no lubrication in the joint, its parts are deformed, incorrect assembly	Disassemble the joint, clean the parts, change the grease. In case of severe wear or deformation of parts, replace the intermediate shaft assembly
• Jamming of the cardan joints of the front or rear shafts	Lubricate the hinges. If grease does not clear the jam, replace the pivot or shaft assembly
• Increased imbalance of cardan shafts	Replace shaft assemblies
Increased imbalance of the center differential due to a factory defect or a violation of the relative position of parts during assembly	Replace Differential
Noise when cornering or wheel slip
Worn or chipped teeth of satellites or gears of axle drives	Replace worn or broken parts
Tight rotation of satellites on the axis	Clean the burrs on the axis and in the holes of the satellites with a needle file, replace worn and deformed parts
Spherical wear (internal) surface of differential housing	Replace differential housing or differential assembly
Jamming of gears of drives of bridges in the case of differential	Replace worn and deformed parts. By selecting support washers, set the axial clearance of the gears to 0–0.10 mm, controlling the moment of resistance to rotation (see Transfer case)
Large axial clearance of the axle drive gears in the differential case	By selecting support washers, set the axial clearance of the gears 0–0.10 mm, controlling the moment of resistance to rotation (see Transfer case)
Transmissions hard to turn on or differential lock
Sliding clutch running tight on hub or differential housing splines	Clean the splines from dirt, cut off the burrs with a needle file, replace parts with wrinkled splines
nicks on spur teeth (small) gears of higher and lower gears, on the teeth of the couplings and splines of the front axle drive shaft	Clean parts, cut burrs with a file, replace parts with crumpled slots or worn teeth
Deformed fork or stem	Correct or replace parts
Deformed drive levers	Straighten the levers
Jamming of the drive levers on the axles	Disassemble the connection, clean the parts from dirt, if necessary, replace the lever axle, its bushings
Too thick oil in the transfer case	Use oil according to climatic conditions (see Applications)
Spontaneous disengagement of gears or differential lock
Damage or wear of gear teeth and couplings, nicks in splines	Replace worn clutches or gears. Eliminate nicks with a file
Deformed drive parts	Correct or replace parts
Detent springs lost their elasticity, dirt in the detent holes, detent wear	Clean parts, replace worn ones
Transfer case oil leak
Wear of oil seals	Replace seals
Severe wear, nicks on the surfaces of the shafts and rods on which the seals work	Clean up minor damage with fine-grained sandpaper and polish. When installing a new oil seal, you can underpress it a little, avoiding distortion (if necessary, placing spacers up to 1 mm thick under it), so that the lip of the stuffing box works on the unworn part of the shaft. In case of significant damage - replace the shafts and seals
The fastenings of the covers of the crankcase of the transfer case have loosened, their gaskets are damaged	Tighten screw connections. Replace gaskets (sealant can be used)
Corks not tightly closed	Pull up the plugs (you can seal them)
The cap nut of the speedometer drive on the transfer case is not tightened	tighten the nut
On the cover of the hinge of the intermediate shaft visible traces of grease
The protective cover of the hinge is damaged, its clamps are loose	Inspect the hinge, if there is play, replace it. If there is no play, and there is little dirt in the grease, without disassembling the hinge, remove as much grease as possible with a screwdriver and put in a new one (SHRUS-4). Replace damaged case, tighten (replace) clamps