B32.20-0064-09
1 | Leaf spring (inverted) | 7 | Spring end brackets | |
2 | Spring seat on the center bracket | 8 | Nuts of the screws securing the brackets | |
3 | Spring clips | 9 | Mounting bracket of the lower arms | |
4 | Clip nuts | 10 | Stringer stop | |
5 | Clip washers | A | Double trestles for rear axles support | |
6 | Clips positioner |
| Remove/install | ||
1 | Warning | The work procedures described here are applicable to 6x4 vehicles which, depending upon model, are fitted with two HD 4 or HD 7 rear axles. | |
2 | Place the vehicle on a level place to work safely | Chock the vehicle front wheels to avoid its unintentional displacement. | |
Greater care to lift the vehicle will have to be observed on a laden vehicle. | |||
3 | Disconnect the negative battery cable or turn off the main switch | Detach the battery negative lead releasing its end fastened to the chassis frame. | |
4 | Slacken the rear wheel fastening nuts | Do not lift the vehicle by supporting the jack on the central housing of the rear axle. | |
5 | Lift the vehicle and support it on safety stands conveniently placed under the side rails, ahead and aft the axle, on vehicle both sides, to make it possible to remove the spring packs. Also, support two rear axles on double trestles (A) | The vehicle must not be lifted on only one side with the opposite wheel remaining supported by the ground. | |
6 | Remove the rear wheels |
| |
Vehicles with HD 7 axles | |||
7 | Remove the clip nuts (4), clip washers (5), the spring clips (3) and the clip positioner | Installation: Slightly lubricate the threads of the leaf spring clip threads, install the clips and secure them with new nuts, tightening them lightly. | |
Grease, 6820.20 | |||
8 | Remove the spring | If necessary, remove the lower arm fastening brackets (9), loosen bracket fastening screws nuts (8), remove the screws and remove the brackets. | |
Installation: Lubricate with grease the contact surface of the spring with the brackets. | |||
.Spring support attachment nuts | |||
Grease, 6820.20 | |||
9 | Check the conditions of the side member stop (10) | If necessary, replace the stop. | |
10 | Install in reverse order | ||
11 | Install the rear wheels |
| |
Vehicles with HD 7 axles | |||
12 | Remove the safety stands and lower the vehicle | ||
13 | Tighten the nuts of the spring clips, to the specified tightening torque | Gradually and alternately tighten the leaf spring clip nuts until achieving the specified tightening torque. | |
The leaf spring clip nuts should be retightened after traveling 500-1000 km with the vehicle loaded. | |||
.Hex nut on the center support spring clamp | |||
14 | Check and, if necessary, adjust the axles parallelism and the steering alignment | Carry out the adjustments according to the technical data corresponding to the vehicle. | |
15 | Take the vehicle for a test-drive and check its behavior |
Referenced documents
- ar4010b1100b Remove/install wheels
- ar4010b1100d Remove/install wheels