194002062 - S023 GEARBOX NOISE - IN A SPECIFIC GEAR

With the engine running, there is a noise (whistling inside the gearbox) when a specific gear is engaged. This noise decreases or disappears on changing gear
Results of the tests
1SYNCHRONIZER RING CHECKAll OKProblems encounteredOperation
Overhaul the gearbox    Op. 2110B34 MANUAL GEARBOX (6 SPEED) WITH DIFFERENTIAL - DISMANTLING AND REASSEMBLY - WASH, CHECK COMPONENTS, REPLACE SYNCHRONIZERS AND INTERNAL CONTROLSIn particular, check the synchronizer rings of the gear engaged: there should be no wear on the inner surfaces.Move on to Step 2Seals wornReplace the synchronizers    Op. 2110B34 MANUAL GEARBOX (6 SPEED) WITH DIFFERENTIAL - DISMANTLING AND REASSEMBLY - WASH, CHECK COMPONENTS, REPLACE SYNCHRONIZERS AND INTERNAL CONTROLS
2GEAR CHECKAll OKProblems encounteredOperation
Overhaul the gearbox    Op. 2110B34 MANUAL GEARBOX (6 SPEED) WITH DIFFERENTIAL - DISMANTLING AND REASSEMBLY - WASH, CHECK COMPONENTS, REPLACE SYNCHRONIZERS AND INTERNAL CONTROLSIn particular, check the teeth of the gear engaged: there should be no signs of wear or seizingMove on to Step 3Gears wornReplace the gears involved    Op. 2110B34 MANUAL GEARBOX (6 SPEED) WITH DIFFERENTIAL - DISMANTLING AND REASSEMBLY - WASH, CHECK COMPONENTS, REPLACE SYNCHRONIZERS AND INTERNAL CONTROLS
3REDUCTION GEAR CHECKAll OKProblems encounteredOperation
Check the reduction gearMore specifically:- it should not be worn or damaged;- there should not be excessive clearanceEnd of diagnosisReduction gear damagedRestore the clearance or, if necessary, replace the reduction gear