B2CE03K1 - 406D9 BE3 GEARBOX BE4 GEARBOX

CHECK - ADJUSTMENT INPUT SHAFT BEARINGS

1 - PRELIMINARY OPERATIONS

Stripping the gearbox .

Removal :

• gearbox casing
• input and output shafts
• bearing guide tube

Refitting the bearing guide tube .

2 - CHECK - ADJUSTMENT

remove the input shaft rear bearing outer race using the drift [3] .

WARNING : bearings removed must not be re-used .

refit the bearing outer race in the casing, with the press and using the fitting drifts [3] - [5] (Replace the bearing removed with a new one) .

Extract the bearing outer race (1) .

Measure the thickness of the shim (2) .

Under the bearing race fit an adjustment shim which must be 0,20 mm thinner than the original shim .

Fit :

• the input shaft new bearing outer race (1)

Fit :

• the input shaft (3) fitted with new bearings
• the gearbox casing (4)
• the bolts (5) (every second bolt) tightening torque 1.25 da.Nm

Rotate the shaft several turns .

Fit the nut (6), contact surface facing outwards .

Tighten the nut a little (6) .

place the dial gauge [12] on the mounting [11a] - [11b] - [11c] .

Position the sensor on the nut (6) .

Exert an axial thrust downwards on the shaft .

Zero the dial gauge .

Push the shaft axially, upwards, .

Read the value :

• the end float should be between 0,05 and 0,15 mm
• if the dial gauge reading is not correct, re-adjust

Remove :

• the dial gauge [12] and its mounting [11a] - [11b] - [11c]
• the nut (6)
• the bolts (5)
• the gearbox casing (4)
• the input shaft (3)

3 - COMPLEMENTARY OPERATION(S)

NOTE : observe the cleaning and refitting conditions .

Refitting :

• input and output shafts
• gearbox casing

Reassembling the gearbox .