ar3530w047004a

Checking friction torque of tapered roller bearings

Type ar · emne 35.30 · version 0109 · 2009-10-23

Gælder for: REAR AXLE 740.892 /894 /896, 748.2 /704 /705 /706 /708 ohne Durchtrieb

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 2 Chassis › 35 Bagaksel › 35.30 Drev, drivaksler

EinPAS 17 Drivstreng/aksel › 17.51 Bagaksel › 17.51.65 differentiale/akselkraftgennemføring

Gælder også for motorer/gearkasser: 740 892, 740 894, 740 896, 748 2**, 748 704, 748 705, 748 706, 748 708

AR35.30-W-0470-04A	Checking friction torque of tapered roller bearings
 Danger!	Risk of injury to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A

Test and adjustment values for rear axle drive

Number	Designation		Rear axle 748.21/22/23/24 with ring gear 233 mm dia.	Rear axle 748.21/22/23/24 with ring gear 300 mm dia.


BE35.30-N-1003-01A	Friction torque of tapered roller bearings on drive pinion	Nm	2...3	2...3

Test and adjustment values for rear axle drive

Number	Designation		Rear axle 748.26/27 with ring gear 233 mm dia.	Rear axle 748.26/27 with ring gear 300 mm dia.


BE35.30-N-1003-01A	Friction torque of tapered roller bearings on drive pinion	Nm	2 to 8	2 to 8

Test and adjustment values for rear axle drive

Number	Designation		Rear axle (NAG) 740.893/895/ 897/898, 748.708 with 300 mm ring gear-dia.	Rear axle 748.702/705 with ring gear 233 mm dia.


BE35.30-N-1003-01A	Friction torque of tapered roller bearings on drive pinion	Nm	2 to 8	2...3

Test and adjustment values for rear axle drive

Number	Designation		Rear axle 740.892/894/896, 748.701/704/707 with 300 mm ring gear-dia.	Rear axle (NAG) 748.703/706 with 233 mm ring gear-dia.


BE35.30-N-1003-01A	Friction torque of tapered roller bearings on drive pinion	Nm	2...3	2 to 8

Differential assembly with differential

Number	Designation						Rear axle 748.21/22/23/24 without throughdrive, 233 mm Ø ring gear


BA35.30-N-1007-03A	Collar nut, coupling flange to drive pinion gear	M451.5				Nm	900
		M551.5				Nm	-

Differential assembly with differential

Number	Designation						Rear axle 748.21/22/23/24 without throughdrive, 300 mm Ø ring gear


BA35.30-N-1007-03A	Collar nut, coupling flange to drive pinion gear	M451.5				Nm	-
		M551.5				Nm	900

Differential assembly with differential

Number	Designation						Rear axle 748.26/27 without through-drive, ring gear Ø 233 mm


BA35.30-N-1007-03A	Collar nut, coupling flange to drive pinion gear	M451.5				Nm	900
		M551.5				Nm	-

Differential assembly with differential

Number	Designation						Rear axle 748.26/27 without through-drive, 300 mm dia. ring gear


BA35.30-N-1007-03A	Collar nut, coupling flange to drive pinion gear	M451.5				Nm	-
		M551.5				Nm	900

Differential assembly with differential

Number	Designation					Rear axle 740.892/894/896, 748.701/704/707, without through-drive, 300 mm dia. ring gear	Rear axle 748.705 without through-drive, 233 mm dia. ring gear


BA35.30-N-1007-03B	Collar nut, coupling flange to drive pinion gear	M451.5			Nm	-	900
		M551.5			Nm	900	-

Differential assembly with differential

Number	Designation					Rear axle 748.706, (NAG), without through-drive, 233 mm dia. ring gear	Rear axle 748.708, (NAG), without through-drive, 300 mm dia. ring gear


BA35.30-N-1007-03B	Collar nut, coupling flange to drive pinion gear	M451.5			Nm	900	-
		M551.5			Nm	-	900

Checking friction torque of tapered roller bearings

Checking friction torque of tapered roller bearings

Checking friction torque of tapered roller bearings

Checking friction torque of tapered roller bearings

001 589 22 09 00

Wrench socket

Impact-type box wrench

Retainer wrench

001 589 75 09 00

717 589 00 31 00

Torque wrench

745 589 01 21 00

Checking friction torque of tapered roller bearings

Ratio wrench

000 589 69 63 00

Checking friction torque of tapered roller bearings

W33.30-0037-01

Check

 Check friction torque only when radial sealing rings are removed.

1 Slide connector flange (5) on splines of drive pinion.

2  Install retainer wrench (2) on coupling flange (5).

3 Tighten collar nut (1) using  socket wrench bit (4) and  ratio wrench (3)  .

4  Remove retaining wrench (2) from connector flange (5).

Checking friction torque of tapered roller bearings

W33.30-0038-01

5  Position torque wrench (6) with  socket wrench bit (4) on the collar nut.

6 Using the torque wrench (6), rotate the coupling flange continuously for a minimum of 3 revolutions and read off the friction torque in the process.

 If the event of a deviation from the friction torque.

7 Detach coupling flange again,  use puller if necessary.

Adjust

8 Determine suitable shim.

 If the friction torque is greater than the specified value: Insert thinner shim.
If the friction torque is lower than the specified value: Insert thicker shim.
Aim for lower specified value with used tapered roller bearings and upper specified value for new tapered roller bearings.

9 Remove drive pinion from the pinion housing again.

10 Mount suitable shim and pinion housing onto drive pinion.

11 Heat outer tapered roller bearing to approx. 80 °C and slide all the way onto the drive pinion gear.

12 Check friction torque again.

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