1 | Differential assembly housing |
2 | Threaded ring |
4 | Tapered roller bearing |
5 | Safety lock |
6 | Bolt (safety lock) |
7 | Rectangular mandrel |
8 | Support bearing cap |
9 | Screw (support bearing) |
10 | Dial gauge |
11 | Gauge holder |
B35.30-0014-05
| Measure | ||
Caution | Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. | |
1 | Place the dial indicator support (11) with the dial indicator (10) on the flat surface of the differential set case (1) | The dial indicator (10) must be in the vertical position with your tip supported on the flank of a tooth in the toothed crown with a pre-load of approx. 2 mm. | |
Dial gage | |||
Dial indicator holder | |||
2 | Turn the differential assembly a few times and measure the gap between the teeth of the toothed crown and the pinion in at least three different points displaced by 120 ° | Determine the lowest play point between the measured points. | |
.Clearance between ring gear/pinion | |||
3 | Block the pinion at the lowest clearance point between the teeth in the differential assembly and adjust the clearance moving axially the differential assembly through the threaded rings (2, ) until obtaining the lowest prescribed clearance | Square drift | |
4 | Tighten the screws (9) of the bearing cap with the specified torque in the (1st stage) | .Bearing cap to differential assembly housing | |
5 | Loosen the threaded rings to relieve the load on the tapered roller bearings (4), then press them again | Lightly press the threaded rings (2) to avoid load on the tapered roller bearings (4). | |
6 | Determine the differential assembly mounting measure. |
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7 | Adjust the pre-load of the tapered roller bearings (4) |
| |
Rear axle 742.82. 746.88/98/99 | |||
8 | Tighten the screws (9) of the bearing cap with the specified torque in the (2nd stage) | If not already fitted. | |
.Bearing cap to differential assembly housing | |||
9 | Install the safety lock (5) and tighten the screw (6) of the threaded rings (2) | .Safety locking bolt to the bearing cover | |
| Check | ||
10 | Turn the differential assembly a few times and recheck the gap between the flanks of the tooth of the sprocket and the pinion | If the nominal value has not been reached, repeat the operations from the step 2 on. | |
11 | Check the contact marks between the sprocket and the pinion |
| |
Contact paint (permanent, violet - no. 330) |
Central actuation with differential |
Number | Designation | Rear axle 746.27 in vehicle 382.1, 634.0 | Rear axle 746.881/882/888 in type 368.0/1 | |||
BA35.30-B-1010-03H | Bearing cap to differential assembly housing | M16x1,5x110 | Nm | - | - | |
M18X1,5X120 | 1st stage | Nm | 200 | 200 | ||
2nd stage | ° angular | 90 | 90 | |||
M20x1,5 | 1st stage | Nm | - | - | ||
2nd stage | ° angular | - | - | |||
M22x1,5 | 1st stage | Nm | - | - | ||
2nd stage | ° angular | - | - |
Central actuation with differential |
Number | Designation | Rear axle 742.82 in vehicle 368.0/1, 384.2/3 | Rear axle 746.984/987/988/996/998/999 in vehicle 384.0, 985.0/1 | |||
BA35.30-B-1010-03H | Bearing cap to differential assembly housing | M16x1,5x110 | Nm | 250 | - | |
M18X1,5X120 | 1st stage | Nm | 200 | 200 | ||
2nd stage | ° angular | 90 | 90 | |||
M20x1,5 | 1st stage | Nm | - | - | ||
2nd stage | ° angular | - | - | |||
M22x1,5 | 1st stage | Nm | - | - | ||
2nd stage | ° angular | - | - |
001 589 53 21 00
Dial gage
363 589 02 21 00
Dial indicator holder
312 589 04 07 00
Square drift