Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 155 Factory Service Manual (1992-1998)07 · Engine – mechanical (V6)
07 · Engine

Replacing valve guides

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Valve Guides › Replacing valve guides
Engine – mechanical (V6)Replacing valve guides · page 1 of 2

Calculate the clearance by subtracting the diameter of the valve stem from the inner diameter of the valve guide; replace the parts if the clearance is not within the prescribed limits.

Radial clearance between valve stem and valve guide inner diameter LIVIA 0.023 to 0.058 mm
ATE 0.020 to 0.065 mm
exhaust 0.055 to 0.090 mm

REPLACING VALVE GUIDES

Visually check the valve guides for nicks, signs of scoring, distortion or displacement from the original installation position.

  1. If necessary withdraw the valve guide using puller N° 1.821.005.000 (A.3.0134).
Illustration of valve guide removal with puller N° 1.821.005.000 (A.3.0134)

Measure the diameter of the valve guide seat and outer diameter of the new valve guide; the installation interference must be within the prescribed tolerances.

Diameter of valve guide seat
intake and exhaust 13.990 to 14.018 mm
Outer diameter of valve guide
intake and exhaust 14.048 to 14.059 mm
Interference between valve guide and seat
intake and exhaust 0.030 to 0.069 mm

Parts & tools for this job For 1992 Alfa Romeo 155

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