Service News
Copyright By Fiat Group Automobiles S.p.A. - Printed 09/09/2011


Alfa MiTo


Version: all models
44
03.11
4410 1 421 MA FRONT SHOCK ABSORBERS
Noise - Service Solution


FAULT COMPLAINED OF

Noise coming from front shock absorbers.

TECHNICAL CAUSE

Noisy support mounting for shock absorber on turret.

OPERATIONS IN PRODUCTION

Adoption of flexible mountings with improved thrust washers.

IPLEMENTATION OF MODIFICATION

 

Version

  

Factory

  

Line

  

Chassis No.

  

Organisation No.
 

All models 1.4 MultiAir 105 HP

  

Mirafiori

  

-

  

1169651

  

168535
 

All Models 1.4 Turbo MultiAir 135 HP

  

Mirafiori

  

 

1170014

  

168567
 

All models 1.3 MultiJet

  

Mirafiori

  

 

1170006

  

168568

OPERATIONS IN NETWORK

Network behaviour standards towards the Customer

  • Once the claimed fault has been confirmed, reassure the Customer that the problem will be solved by replacing both flexible mountings with new ones, from the Spare Parts Dpt., having improved features.
  • After the operation, show the Customer what has been done and make sure he is satisfied.

Service Solution

If the customer's claimed fault is confirmed, replace both flexible mountings with new ones, coming from the Spare Parts Dpt., according to the following Operating Cycle.

OPERATION CYCLE

Remove the front shock absorbers, with reference to Op. 4410A12 in the Service Manual, then proceed as follows.

  • Fit the shock absorber-spring assembly on the special tool no. 1874555001.
  • Undo the fixing nut using the tool 1857509000 (1 - Fig. 1) and remove the flexible mounting (2).

Fig. 1



When refitting, always replace the fixing nuts with new ones from the Spare Part Dpt.
  • Replace the removed flexible mounting with the new flexible mounting (1 - Fig. 2), from the Spare Parts Dpt.
  • Install the new flexible mounting, tighten the new upper fixing nut and, using the special tool no. 1857509000 (2), tighten to the torque of 5.2 ÷ 5.7 daNm.

Fig. 2



Remove the shock absorber-spring assembly from the special tool and refit it on the vehicle.

  • Position the flexible plate (1 - Fig. 3).
  • Screw in the nut (2) securing the shock absorber to the body without tightening it.

Fig. 3



  • Tighten the new bolts (1 - Fig. 4) securing the front wheel hub to the steering knuckle to a torque of 10.3 ÷ 12.6 + 45 .

Fig. 4



  • Connect the articulation link (1 - Fig. 5) of the anti-roll bar , tighten the new fixing nut (2) to the torque of 3.6 ÷ 4.4 daNm.

Fig. 5



  • Engage the brake oil pipe to the shock absorber bracket and close the retaining clip.
  • Engage the wiring for the ABS wheel rpm sensor to the bracket for the shock absorber.
  • Refit the (two) front wheels, with reference to Op. 4450B12 of the Service Manual.
  • With the car on the ground, tighten the nut (1 - Fig. 6) securing the shock absorber to the body, screwed in previously, to the torque of 4.7 ÷ 5.2 Nm.

Before undoing the nut (1), insert the spanner correctly deep into the hexagonal groove at the top end of the shock absorber stem.

Fig. 6



Repeat the operations carried out on the other side of the vehicle.

Check the front wheel geometry, with reference to Op. 4450A10 of the Service Manual.

AVALABILITY OF PARTS

 

Version

  

Description

  

Part No.

  

Q.ty
 

All models in question

  

Flexible mounting

  

50521707

  

2
 

All models in question

  

Flexible mounting fixing nut

  

55702313

  

2 (**)
 

All models in question

  

Self-locking nut (re. 2 - Fig. 5)

  

12578321

  

2 (*)
 

All models in question

  

Screw (re. 1 - Fig. 4)

  

51736811

  

4 (**)
 

All models in question

  

Self-locking nut (re. 1 - Fig. 4)

  

51736810

  

4 (**)

(*) The pack contains 5 components.

(**) The pack contains 20 components.

CLAIM REPORT DATA

 

Version

  

Operation

  

Part

  

Fault

  

Position

  

Time allowance
 

All models in question

  

4410142

  

1

  

MA

  

010-090

  

2.30 (*)

(*) The Time Allowance includes the replacement of the flexible mountings plus front wheel geometry check.