G33.25-3263-08
1 | Kingpin | 3 | Kingpin eye | |
2 | Kingpin | 4 | Kingpin eye |
1 | Kingpin |
2 | Kingpin |
A | Installed dimension |
B | Installed dimension |
G33.25-3260-02
| Remove | ||
1 | Remove steering knuckle |
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Front axle 737.365/366/367/368 in model 437.4 | |||
Front axle 737.220/221/222/223/224 | |||
2 | Remove sealing rings and needle bearing from axle tube |
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Front axle 737.365/366/367/368 in model 437.4 | |||
Front axle 737.220/221/222/223/224 | |||
3 | Close opening in axle tube with rags | ||
4 | Support axle tube as far as possible to the outside with jack stand | To avoid any deformation to axle tube. | |
5 | Grind off weld seams (arrows) inside on the kingpins (1, 2) | ||
6 | Drill a balance hole of Ø 8 mm in each kingpin (1, 2) | ||
Warning | Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | |
7 | Heat up each kingpin eye (3, 4) to approx. 180 °C | The kingpin eyes (3, 4) must be heated up in stages. It is essential to use a temperature measuring instrument. | |
Warning | Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | |
8 | Use suitable tool to knock out kingpin (1, 2) from outside inwards | ||
| Check | ||
9 | Check mounting holes of kingpins (1, 2) | If there is wear, scuff marks or if the bores are worn out | |
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Replace axle tube. | |||
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| Clean | ||
10 | Clean and deburr bores | ||
| Install | ||
Warning | Risk of injury when handling liquid nitrogen or from touching extremely cool objects. Risk of asphyxiation from inhaling nitrogen gas. | Wear heat protective gloves, protective clothing and full eye protection. Ensure that the work area is adequately ventilated. | |
11 | Place new kingpins (1, 2) in the cool box and fill with liquid nitrogen | Cool new kingpin (1, 2) for approx. 30 minutes. | |
Supercooler box | |||
Warning | Risk of injury when handling liquid nitrogen or from touching extremely cool objects. Risk of asphyxiation from inhaling nitrogen gas. | Wear heat protective gloves, protective clothing and full eye protection. Ensure that the work area is adequately ventilated. | |
12 | Remove kingpins (1, 2) from cool box using pliers and pound into the bores using the press-in tool | ||
| Press-in too for kingpins | Front axle 737.2/3/5/9 | |
The chamfers of the kingpin (1, 2) must face inwards. | |||
Front axle 737.221/222/223/224/366/367/368/571/572/581/583/592Installed dimension of kingpin | |||
Front axle 737.220/365/570/580/590/910Installed dimension of kingpin | |||
Danger | The high voltage used for electric welding presents a lethal hazard. Risk of explosion from welding in areas close to highly inflammable materials. Risk of injury from weld splatter and UV-light when welding. Risk of poisoning from inhaling welding gases | Use insulating mats. Wear protective clothing, safety glasses and a protective mask. Remove highly inflammable materials from the hazard area. Use air extraction system. | |
13 | Weld on kingpins (1, 2) using electric welder | ||
General notes on welding | |||
Use special rod electrode 3.2x350 mm. Welding may only take place on the chamfer of the kingpins (1, 2), not on the carburized layer. | |||
| Check | ||
14 | Check weld seams (arrows) for cracks using crack detector fluid | Crack detector | |
If there are problems | |||
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Re-weld weld seams (arrows). | |||
15 | Install sealing rings and needle roller bearings in axle tube |
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Front axle 737.365/366/367/368/910 | |||
Front axle 737.220/221/222/223/224 | |||
16 | Install steering knuckle |
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Front axle 737.365/366/367/368/910 | |||
Front axle 737.220/221/222/223/224 |
346 589 00 63 00
Supercooler box