Scania Leaf spring suspension. Manual - part 7

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Renewing shock absorber

IMPORTANT! Ensure that the axle is not 
hanging from the shock absorbers.

Note: Bleed the new shock absorber before 
fitting, by compressing and expanding it several 
times. Hold the shock absorber vertical during 
bleeding and until it is in position.

Tightening torque

M16 castle nut

130 Nm, then 
on to closest 
split pin hole

M16 lock nut with plastic insert 210 Nm

Nut for stud, 9/16 or M14

70 Nm

Nut for stud, M16

90 Nm

M12 nut

84 Nm

M16 nut

210 Nm

General illustration of rear shock absorber

General illustration of front shock absorber

1

Shock absorber

2

Bushing

3

Washer

4

Spacing sleeve

5

Washer

6

Nut

7

Bolt

8

Washer

9

Nut

10 Split pin

Renewing shock absorber

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Dismantling spring

!

WARNING!

If the spring assembly is not secured the 
nut will fly off.

Use spring press 587 119 when overhauling leaf 
springs.

1

Remove the bolts from the U-bolts.

2

Secure the spring in a spring press so that 
the nut on the centre bolt faces upwards, 
refer to the illustration.

3

Mark the spring leaves so that they can be 
refitted in the same positions.

4

Cut or grind off the nut from the centre bolt.

5

Loosen the spring press and dismantle the 
spring. Renew damaged spring leafs.

1

Centre bolt nut

Spring secured in spring press

Renewing spring leaves and U-bolts

 Renewing spring leaves and U-bolts

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Assembling the spring

1

Insert a new centre bolt through the lowest 
spring leaf.

2

Place the lowest spring leaf in the press, 
with the head of the centre bolt in the lifting 
head of the hydraulic pump.

3

Fit the spring leaves according to the 
markings made when dismantling.

4

Secure the spring in the spring press. 
Tighten the centre bolt nut to 87 Nm for 
M12 and 90 Nm for M14.

5

Cut off the centre bolt approximately 5 mm 
above the nut.

6

Peen the end of the bolt, refer to illustration. 
Screw on the bolts of the U-bolts.

Peening of centre bolt

Renewing the U-bolt

1

Disassemble the spring.

2

Drill away the peening. Tap out the rivet 
using a drift.

3

Remove the U-bolt.

4

Rivet a new U-bolt onto the spring leaf. 
Ensure that it is securely fitted, refer to the 
illustration.

5

Grind away any access rivet material. 
Ensure that no burrs are left.

Riveting U-bolts

Assembling spring - Renewing U-bolt

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Leaning vehicles

Background

It has occurred that some 4 series trucks lean to 
one side. If the truck leans to one side this does 
not necessarily mean that the chassis frame is 
twisted or deformed.

The chassis frame has a relatively low resistance 
to torsional forces. An asymmetrical load, due 
for example to fuel tanks and other equipment 
may therefore cause the chassis frame to appear 
to be twisted when in fact this is not the case.

If the chassis was not true when the bodywork 
was added the chassis frame may be held in the 
twisted position by a stiff bodywork.

The following pages describe different steps that 
can be taken to compensate for the leaning.

Note: Before checking the vehicle suspension, 
the cab suspension should be checked.

Leaning vehicles