Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 155 Factory Service Manual (1992-1998)51 · Gearbox and differential
51 · Transmission

Layshaft disassembly (page 3 of 3)

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Layshaft disassembly
Gearbox and differentialLayshaft disassembly · page 3 of 3
  1. Remove the flexible hub-retaining ring.
Diagram showing a hand using pliers to remove a retaining ring from a gear assembly on a shaft. The shaft has multiple splined sections and is labeled with '1' pointing to the gear.
  1. Using a hydraulic press and plate No. 1.820.024.000 extract the complete hub (1A) of the, 1st and second speed sliding sleeve, 1st speed synchronizer ring (1B), 1st speed driven gear (1C) and withdraw the 1st speed gear roller bearing.
Diagram showing a shaft assembly with labeled parts: 1A (hub), 1B (synchronizer ring), 1C (driven gear), and 1D (roller bearing). A hydraulic press is shown applying force to extract the hub. The plate number 1.820.024.000 is indicated on the press plate.

NOTE: When replacing the layshaft front bearing remove the bearing inner race from the shaft as follows.

  1. Using a suitable tool slightly move the bearing race from the gear which is machined onto the shaft.

CAUTION: Extreme caution should be used when operating with the chisel in order to avoid damaging the tooth ing and the shaft.

  1. Using puller No. 1.821.117.000 remove the bearing race.

During installation, insert the new race using a hydraulic press and a generic flat base inserting tool.

Diagram showing a hand using a puller tool (labeled 1.821.117.000) to remove a bearing race from a shaft assembly. The tool is shown with an arrow indicating the direction of force. A close-up view shows the tool's dimensions and angles (60-5°, 4-45, 18-20).

Parts & tools for this job For 1992 Alfa Romeo 155

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