Cause of defect | Elimination method |
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Noise in a transmission Noise decreases or disappears if to switch off coupling
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Insufficient level of oil in a transmission | Check level, if necessary add oil. Check lack of a leak. If necessary clean or replace сапун |
Low viscosity of oil | Replace oil, previously having washed out a box |
Wear or damage of bearings, teeths of gear wheels | Replace worn-out bearings of a gear wheel, wash out a box |
| Transfers join hardly, extraneous noise are absent
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Weakening of fastening of forks of gear shifting on rods because of an otvorachivaniye of lock bolts | Tighten bolts of fastening of forks on rods |
Agnails on teeths of sliding couplings of synchronizers | Cut agnails |
Wear of openings under pins in the lower part of the lever of gear shifting | Replace the lower part of the lever |
Coupling is not switched off | See. Coupling
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| Transfers are spontaneously switched off
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Damage or wear of shliyets on the coupling, a gear wheel or a synchronizer nave | Replace faulty details |
Bolts of fastening of a transmission to a case of coupling and/or a coupling case to the engine are not tightened | Tighten fastening bolts |
Lost elasticity or springs of clamps collapsed, rods are worn-out | Replace faulty details |
| Noise, crash, squeal of gear couplings at the moment of inclusion of transfers
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Coupling is switched off not completely | See. Coupling
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There is not enough oil in a transmission | Add oil. Check, whether there is no leak. Clean or replace сапун |
Wear or deformation of a ring of the synchronizer of included transfer | Replace a ring |
| Leakage of oil
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Wear of cuffs | Replace cuffs. If necessary clean or replace сапун |
Strong wear, corrosion on surfaces of shaft on which edges of cuffs work | Small damages smooth out a fine-grained skin and polish. Establishing a new cuff, it is possible a little недопрессовать it, without allowing a distortion (having if necessary enclosed under it remote washers in thickness to 1 mm) that the edge of a cuff worked by not worn-out part of a shaft. At considerable damages replace shaft and cuffs |
Elevated pressure in a transmission because of a contamination сапуна | Clean or replace сапун |
Weakened fastenings of cases of a transmission, a forward cover or the case of the lever of gear shifting, laying is damaged | Tighten carving connections. Replace laying (at their installation it is possible to use hermetic) |
Case jams are leaky wrapped | Tighten jams |
| At inclusion of any of transfers (except IV) the torque is not transferred to driving wheels
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Landing of gear wheels on intermediate to a shaft weakened | Replace the block of gear wheels |
| Vibration at movement (see also «Kardannaya transfer, the back bridge, a running gear, a steering and brake system»)
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The antifrictional plug of a case of a transmission is worn-out | Replace the plug or a transmission case
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