Test and adjustment values for steering knuckle
Number | Designation | Front axle 730.604 | Front axle | Front axle | ||
BE33.25-N-1001-01B | Axial play of steering knuckle | mm | 0.01...0.1 | 0.01...0.15 | 0.01...0.15 | |
Axle housing, steering knuckle
Number | Designation | Front axle 730.604 | Front axle | |||
BA33.25-N-1001-01D | Wedge bolt to steering knuckle | Nm | 20-25 | 25 to 28 | ||
309 589 03 63 00
000 589 92 33 00
730 589 00 61 00
Axle beam end heater
Centering pin
Hydraulic press
D33.25-0223-01
Removing
1 Remove nut of wedge bolt in front axle beam.
2 Drive out wedge bolt using suitable drift.
D33.25-0211-01
3 Remove retaining ring (1) at top and bottom.
4 Remove cap (2) and sealing rings (3) at top and bottom.
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5 Press out kingpin using hydraulic press (4).
6 Remove steering knuckle with pressure plates from axle beam end.
D33.25-0213-01
7 Drive needle roller bearing and shaft seals using suitable drift out of steering knuckle.
D33.25-0212-01
Install
8 Drive upper needle roller bearing (5) and lower needle roller bearing (6) using suitable drift far enough on both sides into the steering knuckle, until the oil hole (lubricating nipple bore) (7) is half covered.
D33.25-0215-01
9 Insert shaft seals (8) at top and bottom on both sides, grease components.
D33.25-0217-01
10 Mount steering knuckle with steel thrust washer (10) and bronze thrust washer (9) onto front axle beam and center using guide pin (11).
11 Mount steering knuckle where possible without axial play. This is adjusted when installing the steel thrust washer (10), which is available in various thicknesses 0.5 mm to 1.6 mm (0.1 mm graduation). The axial play must be measured for each individual steering knuckle.
8 Shaft seal
9 Bronze thrust washer
10 Steel thrust washer
11 Guide pin
D33.25-0216-01
12 Heat up axle beam end using axle beam end heater (12) to approx. 200 to 220° C (yellow temper color).
The kingpin should be undercooled to ease installation.
D33.25-0218-01
13 Align steering knuckle with the bronze thrust washer and determined steel thrust washer using the
guide pin (11) on the axle beam end. Insert kingpin so that the wedge bolt can be mounted.
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14 Drive wedge bolt into front axle beam and bolt on (arrow).
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15 Insert sealing rings (3) and cap (2) at top and bottom.
16 Install retaining rings (1) at top and bottom.
17 Lubricate steering knuckle.