Workshop Manuals Factory service & repair Fiat
01 00 Introduction and technical data02 10 Engine03 18 Clutch04 21 Gearbox and differential05 33 Braking system06 41 Steering07 44 Suspension and wheels08 50 Auxiliary units09 55 Electrical system10 70 Bodywork
Fiat Punto (176) Factory Service Manual (1993-1999)04 · 21 Gearbox and differential
04 · Transmission

Belt and pulley mechanism

Make
Fiat
Model
Punto (176) Factory Service Manual
Year
1993–1999
Section
Automatic transmission (Selecta) › Belt and pulley mechanism
21 Gearbox and differentialBelt and pulley mechanism · page 1 of 2

Belt and pulley mechanism

The assembly consists of a pair of pulleys, which can expand or contract in an axial sense, and a metal belt that consists of steel blocks mounted on a steel band.

The transmission ratio can vary continuously from a minimum (ratio = 2.503) to a maximum (ratio = 0.497), depending on the pulley/belt contact diameter ratio.
The pulley width is regulated by hydraulic pressure acting on the pulley-centres where they are mounted on the input and output shafts.

Cross-section diagram of the belt and pulley mechanism showing internal components labeled 1 through 5
  1. Primary chamber
  2. Primary pulley
  3. Metal belt
  4. Secondary pulley
  5. Secondary chamber

Parts & tools for this job For 1993 Fiat Punto

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