Workshop Manuals Factory service & repair Fiat
01 Introduction02 Engine03 Fuel system04 Ignition system05 Cooling system06 Clutch07 Gearbox and differential08 Rear suspension and wheels09 Front suspension and hubs10 Steering11 Brakes12 Electrical equipment13 Bodywork14 Technical data and wiring diagrams
Fiat 500 Classic Workshop Manual (1957-1975)10 · Steering
10 · Steering & suspension

Steering box dismantling and reassembly: inset

Make
Fiat
Model
500 Classic Workshop Manual
Year
1957–1975
Section
Steering box dismantling and reassembly › Steering box dismantling and reassembly: inset
SteeringSteering box dismantling and reassembly: inset

Steering box dismantling and reassembly: inset

Section of steering box, through worm screw
FIG 9:4 Section of steering box, through worm screw
Key to Fig 9:4
1Worm screw
2Seal
3Roller bearing
4Worm screw adjuster and bearing retainer
5Pitman arm
6Worm sector
Steering box cutaway
FIG 9:6 Steering box cutaway
Section of steering box, through worm sector
FIG 9:5 Section of steering box, through worm sector
Key to Fig 9:5
1Sector adjustment screw
2Locking nut and plain washer
3Sector thrust washer
4Shim
5Eccentric bush
6Bush adjusting plate
7Plate screw and toothed washer
8Pitman arm
9Sector lower seal
10Upper seal
11Worm sector
12Worm screw
13Oil filler and level plug

2 If play is excessive in the worm screw rollers, screw up the lower adjuster ring 4 (see FIG 9:4). Once adjustment has been completed the adjuster ring must be secured by the cotter. The ring should be positioned so that the hole in the steering box lines up with one of the spaces between the ring castellations.

3 Should the meshing between the worm screw and the sector not be at the correct central position this condition may be rectified by moving the sector axially. To do this add or remove shims (see FIG 9:5) below the thrust ring of the worm sector. The final adjustment must be carried out by using the adjustment screw 1 (see FIG 9:5) on the cover and then locking the screw by nuts 2. In service shims are supplied .0039 inch thick.

The above described adjustments must eliminate any play and back lash in the steering gear without rendering the steering gear stiff to operate between the two locks.

4 During adjustment should any seal be found to be damaged then it should be renewed.

Parts & tools for this job For 1957 Fiat 500 Classic

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