Test and adjustment values of steering knuckle
Number | Designation | Front axle 730.412 | ||
BE33.25-N-1001-01B | Axial play of steering knuckle | mm | 0,01...01 | |
730 589 02 15 00
000 589 92 33 00
309 589 00 15 00
601 589 03 15 00
Impact drift and drift punch
Thrust pin
Pilot bar
Hydraulic press
309 589 03 63 00
730 589 00 63 00
Thrust piece
Axle stub heater
D33.25-0231-01
Removing
1 Remove circlips (1) on top and bottom of steering knuckle.
2 Remove end cover (3) with sealing rings (4).
D33.25-0206-01
3 Drive roll pin (arrow) out of front axle housing using a cotter pin ejector.
D33.25-0232-01
4 Press kingpin out of front axle housing using hydraulic press (5.1), adapter (5.2) and thrust pin (6).
Adapter (5.2) is part 17 of the special tool set hydraulic press.
5 Remove steering knuckle, roller thrust bearing and shim.
D33.25-0233-01
6 Drive needle bearing and shaft seal out of steering knuckle using impact drift and drift punch (7).
7 Clean all components, check for wear and replace, if necessary.
D33.25-0234-01
Installing
8 Drive needle bearing into steering knuckle using impact drift and drift punch (7). In order to ensure the specified distance for the bearing or upper shaft seal, drive in needle bearing using thrust piece (8).
Install the shaft seal on the upper needle bearing so that the sealing lip points downwards.
D33.25-0235-01
9 Mount the steering knuckle with roller thrust bearing and shim on the front axle housing and center with the pilot bar (9).
D33.25-0236-01
10 Mount steering knuckle with as little axial play as possible. When installing, this is adjusted by means of shims (10) which are available in various thicknesses of 0.9 mm to 1.7 mm (0.2 mm graduation). It is absolutely essential to measure the axial play for each steering knuckle individually.
10 Shim
11 Axle stub
12 Retaining ring
13 Shaft seal
14 Thrust washer
During assembly ensure that the collar of the thrust washer (14) abuts flush with the steering knuckle.
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11 Heat up axle stub to approx. 200 to 220°C (yellow annealing color) using the axle stub heater (15).
The kingpin should be supercooled to facilitate assembly.
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12 Guide the steering knuckle from underneath with pilot bar (8) and install the kingpin so that the roll pin can be installed afterwards.
D33.25-0206-01
13 Drive roll pin into the front axle housing.
D33.25-0231-01
14 Insert sealing rings (4) and end cover (3).
15 Install circlip (1)
16 Lubricate steering knuckle at the lubrication nipple.