Remove/install rear spring

AR32.20-B-0230D

Remove/install rear spring

12.02.16



Remove and install

 The rear springs removal and installation services described here are basic; Depending on the type of vehicle and spring manufacturer some differences may occur, such as springs with quantities and different leafs, clamps and support formats.

 Is is very important that the rear springs are repaired always in pairs, at the same axle.

Other issue to be taken into consideration is the later re-tightening of the spring clips after the vehicle has run loaded for some time. The re-tightening, whenever possible, must be carried out with the vehicle empty.

1

Put the vehicle on a flat and leveled floor. Choke the front wheels to avoid that the vehicle moves accidentally

 if the vehicle is loaded, take due care during its lifting operation.

2

Disconnect the negative battery cable or turn the general switch off

 Loose the screw of the negative cable of the frame rail, avoiding to loose the battery terminals too.

3

Unfasten the front shock absorbers at their lower fastenings

 The surplus of travels damages the shock absorbers.

AR32.25-B-0110D

4

Unfasten the side arms of the stabilizer

AR32.35-B-2210D

5

Unfasten the rear wheels without removing them

Danger!

Take care when lifting and lowering the vehicle

Risk of severe accidents.

6

Support the vehicle on racks placed safety under its longitudinal members at both sides, at the front and back, in order to be able to remove the rear springs

 Lifting the vehicle only at one side while keeping the wheel of the opposite side supported on the ground is not allowed. It must be lifted equally at both sides.

 Lifting the vehicle by the center of the rear axle, at the differential is not allowed.

7

Remove the wheels

 Vehicles with drum brake

AR40.10-B-1100E

8

Lift slightly the rear axle carefully until the spring articulations are free

 Choke the rear axle safely in order to keep it in this position during the removal and installation of the rear springs.

9

Unfasten the nuts (7) from the “U” clips (6) slightly, without unfastening the spring

Install: Tighten in sequence and crosswise.

Whenever possible, re-tighten the clips after the loaded vehicle has been used for some time. The later re-tightening must be carried our with the vehicle empty.



*BA32.20-B-1001-03E

10

Remove the greasers (10) from the articulation pins at the front, back and at the shackles

Install: Utilize new greasers and lubricate all the articulations. Confirm the penetration of the grease in all the articulations and clean the surplus.

*BR00.45-B-1003-06A

11

Remove the self-locking nuts (16) and the washers (15) at the front (3), rear (4) support and at the shackle (17)

 Remove the lock pins (14) with the help of a copper or aluminum hammer. Pay attention to the assemblage position.

Install: Utilize new lock pins, if necessary.

12

In order to remove the articulation pins (13): Screw the adapter on the spring's front and rear articulation pins, screw the puller in it and pull out removing the pins, respectively (13)



*343589003301



*343589003307

13

Remove the nuts (21), the external Teflon washer (20), turn the shackle (17) backwards and remove it from the articulation axle (22). Remove the sealing rings (11.1) and the inner Teflon ring (19)

Install: Tighten the first nut (21) and turn the shackle (17) in the articulation axle. Then, tighten the second nut (counter-nut) keeping still the first one.



*BA32.20-B-1008-03E

14

Remove the "U” clips (6) and the positioner (9) from the spring (1)

Install: Put a slight layer of grease on the threads and tighten normally the nuts. The final tightening must be carried out according to the description of item 9.

*BR00.45-B-1003-06A

15

Lower slowly the rear axle, remove the spacer washers (12) and the sealing rings (11)

 Mark the spacer washers (12) to adjust the side clearances at the installation.

Install: During the assemblage use the spacer washers according to the clearance found out.

*BE32.20-B-1001-02B

16

Remove the complete spring (1) carefully in order not to damage the main bolt head (spike)

Install: Assemble the spring on the wedge type shim in such a way the main bolt head (spike) fits perfectly

17

Remove the wedge from under the spring (6.1) and the shim guide (6.2)

 Mark the position of the wedge (6.1), it is located in the caster angle.

Install: Assemble the shim's guide (6.2) in the axle and the wedge (6.1) in the correct position.

18

If necessary, disassemble the rear spring and replace the bushings of the eye bolts

 In the case of damaged, worn or deformed leafs.

AR32.20-B-0231C



Check

19

Check all the articulation components of each spring

Replace:

Springs eye bolts bushings (18).

Articulation pins (13).

Sealing rings (11) and (11.1).

Lubrication greasers (10).

Lock pins with thread (14).

Self locking nuts (16).

Shackle's bushings (23).

Teflon washers (19) and (20).

Shackle (17), if necessary.

20

Check the spring's clips and nuts

Replace: If necessary, springs' clips, nuts and stoppers.

21

Check the condition of the front (3) and rear (4) supports of the rear spring.

 If worn, they must be replaced.

 In the case of vehicles with supports riveted on the longitudinal members, drill the rivets and install self-locking bolts and nuts of the rivets dimension.



*BA31.30-B-1001-01C

22

Check the condition of the auxiliary spring stopper (5.2) and central stopper

 If worn, they must be replaced.



*BA31.30-B-1002-01C



*BA31.30-B-1003-01C

23

Install in reverse order

Install: In order to facilitate the installation of the bushings and other components, put a slight layer of Vaseline.

*BR00.45-B-1001-06A

24

Carry out a test drive, preferably on an irregular terrain

Check the vehicle's behavior.

Número

Denominação

Vehicles 368, 382, 384, 386, 388, 397, 660, 682, 693, 694, 695, 696

BE32.20-B-1001-02B

Shackle spacing washers thickness

mm

4.00 to 4.20

Número

Denominação

Vehicles 386, 388, 682, 693, 695, 696, 958.1

BA32.20-B-1001-03E

Hexagonal nut on the central support spring clamp

Third axle

M18

Nm

350

M20

Nm

500

M24

Nm

750

BA32.20-B-1008-03E

Bolts of the rear spring rear joints on the connection between the spring bundle and the chassis longitudinal member

Third axle

M24

Nm

750

Número

Denominação

Vehicles 388.0, 660.0, 696.0

BA31.30-B-1001-01C

Rear spring's front support bolts on the side rail

M16x1.5

Nm

225

BA31.30-B-1002-01C

Bolts attaching the auxiliary spring stops on the side rail

M12x1.5

Nm

120

BA31.30-B-1003-01C

Bolts attaching the center stop on the side rail

M10x1,5

Nm

63

Número

Denominação

Número de pedido

BR00.45-B-1001-06A

Vaseline

-

BR00.45-B-1003-06A

Grease as per DBL 6804 - Class 267.0

-