Workshop Manuals Factory service & repair Alfa Romeo
01 Introduction and contents02 Technical data and maintenance03 Engine04 Clutch05 Gearbox06 Front axle and drive shafts07 Brakes08 Steering09 Suspension and wheels10 Heating and ventilation11 Bodywork12 Timing belt data sheets
Alfa Romeo 145/146 Factory Service Manual (1994-1999)11 · Bodywork
11 · Body & interior

Structure of the sunroof

Make
Alfa Romeo
Model
145/146 Factory Service Manual
Year
1994–1999
Section
External trim › Structure of the sunroof
BodyworkStructure of the sunroof

Structure of the sunroof

All the components of the sunroof are housed on a frame (13) secured to the body of the vehicle between the outer and inner roof panels.

The electric motor (1) is fixed frontally to this frame together with the controlling relay (4).

A microswitch (2) is fixed to the motor and this determines the position of the sunroof by the position of the runners through a cam on the spindle.

A toothed wheel (3) is positioned on the end of the spindle coming out of the electric motor and this engages with the flexible racks (5) controlling the sliding action along the inside of the guides (14).

The runner (8) which slides along the rails (6 and 9) is fixed to the frame at the end of each rack and this determines the various positions of the sunroof.

The coupling between the pins and cams and the longitudinal movement of the runners determines the type of movement of the brackets (7) to which the glass panel is fixed (10). The position of the runner determines the opening/closing sliding action and that of the opening to the quarterlight position.

The metal frame housing the glass panel is fixed to the brackets (7) with six screws. The holes which are occupied by these screws are slotted to allow the horizontal and vertical position of the roof to be adjusted.

Exploded view diagram of sunroof components including motor, microswitch, toothed wheel, flexible racks, runner, rails, glass panel, sliding blind, sunroof frame, seal, and guiding channel.
  1. Electric motor
  2. Microswitch
  3. Toothed wheel
  4. Relay
  5. Flexible rack
  6. Front rail
  7. Sliding bracket
  8. Runner
  9. Rear rail
  10. Glass panel
  11. Seal
  12. Sliding blind
  13. Sunroof frame
  14. Guiding channel

Parts & tools for this job For 1994 Alfa Romeo 145/146

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