Test values for friction torque of rear axle differential
Number | Designation | Model 124.003/004/007/ | Model 124.020/021/080/ | Model 129.060 | |
BE35.31-P-1001-02C | Friction torque of drive pinion bearing (new tapered roller bearings) | Ncm | 125-150 | 125-150 | 125-150 |
Test values for friction torque of rear axle differential
Number | Designation | Model 170.444/445/ | Model 201.018/023/024/ | Model 201.028/ | |
BE35.31-P-1001-02C | Friction torque of drive pinion bearing (new tapered roller bearings) | Ncm | 125-150 | 125-150 | 125-150 |
Test values for friction torque of rear axle differential
Number | Designation | Model 202.018/078/120/ | Model 202.020/022/023/ | |
BE35.31-P-1001-02C | Friction torque of drive pinion bearing (new tapered roller bearings) | Ncm | 125-150 | 125-150 |
Test values for friction torque of rear axle differential
Number | Designation | Model 208.335/344/345/ | Model | |
BE35.31-P-1001-02C | Friction torque of drive pinion bearing (new tapered roller bearings) | Ncm | 125-150 | 125-150 |
Test values for friction torque of rear axle differential
Number | Designation | Model 210.003/004 with (Code 450) 210.007 except code 450 | |
BE35.31-P-1001-02C | Friction torque of drive pinion bearing (new tapered roller bearings) | Ncm | 125-150 |
Test values for friction torque of rear axle differential
Number | Designation | Model 124.008/028/029/ | Models 129.058/063 up to 31.05.94 | Models 140.028/032/ | |
BE35.31-P-1001-02D | Friction torque of drive pinion bearing | Ncm | 125...150 | 125...150 | 125...150 |
Test values for friction torque of rear axle differential
Number | Designation | Models 210.070/ | |
BE35.31-P-1001-02D | Friction torque of drive pinion bearing | Ncm | 125...150 |
001 589 49 21 00
100 589 02 59 00
129 589 01 07 00
126 589 02 09 00
Torque meter
Wrench socket
Pin wrench
Connecting piece
P35.31-0408-01
1 Push pin wrench (040) and socket wrench bit (040a) onto joint flange (41) and carefully tighten twelve-point collar nut until the specified friction torque is reached.
When tightening twelve-point collar nut, rotate drive pinion several times and apply some light blows to rear axle housing to ensure that tapered rollers are correctly positioned in bearing track.
Shown on rear axle differential dia. 185 mm
P35.31-0417-01
2 To check mount torque measuring instrument (040b) with connecting piece (040c) onto socket (040a) and crank drive pinion with approx. 60 rpm, in doing so read off the friction torque.
If the friction torque exceeds the specified torque, remove the drive pinion again and insert a new spacer sleeve.
P35.31-0374-02
Under no circumstances may the friction torque be reduced by loosening the twelve-point collar nut (40) as otherwise the preload of the tapered roller bearings (43, 46) would be too low. This would result in play in the drive pinion (47) while driving and with it rear axle drive noise.
Shown on rear axle differential dia. 185 mm
40 Twelve-point collar nut
41 Joint flange
42 Radial sealing ring
43 Tapered roller bearing
44 Spacer sleeve
45 Shim
46 Tapered roller bearing
47 Drive pinion
48 Bearing washers
49 ABS gear
50 Rear axle housing
The tapered roller bearings (43, 46) of the drive pinion (47) must be installed with a certain pre-tension. This constant remaining preload is achieved by the spacer sleeve (44) located between the tapered roller bearing inner race and the drive pinion (47) being compressed when the twelve-point collar nut (40) is tightened.
If the friction torque is too low when the drive pinion (47) is spun, i.e. the preload of the tapered roller bearings (43, 46) is too low, the twelve-point collar nut (40) should be tightened a little more. If the specified friction torque is fallen below the drive pinion (47) is to be removed again and a new spacer sleeve (44) is to be inserted.