B32.20-0091-09
1 | Front leaf spring | 10 | Torsion bar mount bracket | |
2 | Front axle | 10.1 | Torsion bar bracket | |
3 | Chassis stringer | 10.2 | Torsion bar bracket guide | |
4 | Front bracket of the leaf springs | 11 | Torsion bar | |
4.1 | Screw securing the power steering box | 12 | Joint shackle | |
4.2 | Screw of the front leaf springs bracket | 13 | Hinge pins | |
4.3 | Self-locking nuts | 14 | Spacing washers | |
5 | Rear bracket of the leaf springs | 15 | Sealing rings | |
5.1 | Screws of the rear leaf springs bracket | 16 | Grease fittings | |
5.2 | Self-locking nuts | 17 | Threaded lock pins | |
6 | U-clips of the spring | 18 | Self-locking nuts | |
7 | Self-locking nuts of the clips | 19 | Plain washers | |
8 | Clips positioner | 20 | Adapter for damper fastening | |
9 | Suspension stop |
| Remove | ||
1 | Place the vehicle on a level place to work safely | The front spring removal and installation works described here are basic. Depending on the type of vehicle and the manufacturer of the springs, there may be some differences, such as springs with different leaf sizes and shapes, clamps and supports. | |
It is important that the suspension springs are always repaired in pairs, i.e., always repair the RH and LH springs on the same axle. | |||
If the vehicle is loaded, take due care while lifting. | |||
2 | Disconnect the negative battery cable or turn off the main switch | If possible, disconnect the end of the negative battery cable attached to the chassis frame stringer. Avoid disconnecting the end of the negative cable attached to the battery, to prevent damage to the battery clamp. | |
3 | Loosen the front dampers from the bottom anchor and remove the (damper) bracket from the adapter (20) for fastening the shock absorber to the spring | Excessive strokes may damage the dampers. | |
4 | Release the side arms of the torsion bar |
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5 | Loosen the wheel lock nuts |
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Vehicle 696 | |||
Danger | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | |
6 | Support the vehicle on trestles conveniently placed under the stringers, on both sides (front and rear), to enable safe work. | The vehicle must not be lifted on only one side with the opposite wheel remaining supported by the ground. The vehicle will have to be lifted equally on both sides. | |
Warning | Risk of injury caused by pinching and crushing when opening and closing engine hood | No one should be within the swivel range of the engine hood as it is being opened or closed. Always open engine hood all the way to the end position until this engages in the front locks. | |
7 | Open the hood to facilitate access | ||
Warning | Risk of injury caused by body parts being pinched or crushed as cab is tilted | Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure it with the safety strut. | |
8 | Tilt the cab to facilitate the access |
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9 | Slightly lift the front axle with care until the front spring joints are free | Safely chock the front axle so as to keep it in this position while removing and installing the springs. | |
10 | Remove the front wheels |
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Vehicle 696 | |||
11 | Loosen the self-locking nuts (7) from the "U" clips (6), without removing them | ||
12 | Remove the grease fittings (16) from the front and rear spring joint pins | ||
13 | Remove the self-locking nuts (18) from the leaf spring front bracket (4), the leaf spring rear bracket (5) and pivot shackle (12) | Remove the three threaded locking studs (17). Use a copper or aluminum hammer. | |
14 | Screw the puller on the front joint pin (13) and remove the hinge pin | Extractor | |
Insert | |||
15 | Similarly, remove the pins (13) from the joint shackle upper and lower (12) joint | ||
16 | Remove the self-locking nuts (7), the spring "U" clips (6), the clamp positioner (8) and the front disc spring (1) suspension stop (9) | ||
17 | Slowly lower the front axle (2), collect the spacer washers (14) and the sealing rings (15) | Mark the spacer washers (14); later, assemble them at the same positions to adjust the lateral play of the joints. | |
.Shackle spacing washers thickness | |||
18 | Carefully remove the complete front disc spring (1) so as not to damage the fitting hole of the primary screw (spike) on the front axle (2) | The spike fitting hole on the shaft is important because it defines the alignment of the axle relative to the vehicle, and may also affect the caster angle. | |
19 | If necessary, remove the front springs and replace the eye bushings | ||
In case you find the discs are damaged or worn. | |||
| Install | ||
20 | Replace the spring joint components and install it on the leaf spring front (4) and rear (5) brackets | ||
21 | Validate the cleaning of the spike fitting hole and the front disc spring seating surface (1) on the axle (2) | ||
22 | Properly fit the spring and mount the suspension stop (9) and the clamp positioner (8) | ||
23 | Apply a light coat of grease to "U" clip (6) threads and mount them on the front disc spring (1) with new self-locking nuts (7), slightly tightening the nuts on both sides. | Spring clips in poor condition or with the damaged screw should be replaced. | |
Grease, 6820.20 | |||
Danger | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | |
24 | Install the wheels and lower the vehicle, supporting the wheels on the ground |
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Vehicle 696 | |||
With vehicle wheels supported on the ground, tighten the fastening nuts. | |||
25 | Lubricate the joint pins with grease under pressure, until the grease completely fills the cavities | Grease, DB supply specification 6811.00.20 - Class 266.2 | |
26 | Swing the front part of the vehicle several times and soon after, tighten the spring clip nuts | Tighten the nuts evenly and crosswise. | |
Spring Clip nut on front axle | |||
27 | Fasten the shock absorbers tightening the fastening nuts | ||
28 | Fasten the side arms of the torsion bar |
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29 | Whenever possible, check and, if necessary, adjust the axles parallelism and the steering geometry | Carry out the adjustments according to the technical data corresponding to the vehicle. | |
30 | Run a test drive to check the vehicle behavior |
Metallic suspension on the front axle |
Number | Designation | Model 386, 694, 695 | Model 682, 693 | |||
BA32.20-B-1001-01A | Spring Clip nut on front axle | M12x1.5 | Nm | - | - | |
M14x1.5 | Nm | - | - | |||
M16x1.5 | Nm | 280 | 280 | |||
M24x2 | Nm | |||||
New clamps | M18x1.5 | Nm | 350 | 350 | ||
Maintenance - retightening | Nm | 280 | 280 | |||
M20x1.5 | Nm | 500 | 490 | |||
M24x1.5 | Nm | 680 | - |
343 589 00 33 07
Insert
343 589 00 33 01
Extractor
Referenced documents
- ar3220b0201c Disassemble/assemble front spring
- ar3220b6721d Remove/install bushes at rear spring and spring shackle
- ar3225b0105b Remove/install front shock absorber
- ar3235b2050d Remove/install front stabilizer bar
- ar4010b1100b Remove/install wheels
- ar4010b1100e Remove/install wheels
- ar6080b0010a Tilt cab to repair position, tilt back
- ar8840b1000b Opening engine hood, moving to upright position and closing
- as0000z001001a Risk of death caused by vehicle slipping or toppling off of the lifting platform.
- as6080z000101a Risk of injury caused by body parts being pinched or crushed as cab is tilted
- as8840z000101a Risk of injury caused by pinching and crushing when opening and closing engine hood