Inspection data of rear axle final drive
Number | Designation | Rear axle | Rear axles | ||
BE35.30-N-1004-01L | Gear backlash of crown wheel | Crown wheel '0.2' | mm | 0,18...0,23 | - |
Crown wheel '0.25' | mm | 0,23...0,28 | - | ||
001 589 53 21 00
Dial indicator
Dial indicator holder
363 589 02 21 00
Commercially available tools
Number | Designation | |
WH58.30-Z-1055-12A | Measuring cover, Firma Zahnradfabrik Passau GmbH D-94034 Passau |
T35.30-0110-01
The specified value for gear backlash is either engraved on the ring gear or the applicable specified values.
1 Install dial indicator holder with dial indicator on measuring cover .
2 Put a dial indicator probe in position at a bolt head (2) of the ring gear bolted connection.
Due to the installation conditions the measurement of gear backlash is only possible at the bolt head (2) of the ring gear bolted connection.
3 Measure actual value of gear backlash by moving the ring gear.
4 Calculate specified value of gear backlash.
The effective specified value results from the applicable specified value less 30%.
Given an applicable specified value of 0.2 mm for example the specified value to be used subsequently is calculated as follows : 0.2 mm 0.7 = 0.14 mm
The specified value for the gear backlash is thus 0.14 mm.
5 Compare the actual value of the gear backlash with the specified value of gear backlash.
If the actual value of gear backlash is not within the permissible tolerance the gear backlash must be adjusted correctly.
6.1 Install thicker shim between the outer race of the tapered roller bearing of the bearing of the differential and rear axle housing (3).
Only carry out if the gear backlash is too small.
6.2 Install thinner shim between the outer race of the tapered roller bearing and bearing of the differential and rear axle housing (3).
Only carry out if the gear backlash is too large.