Page 153 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

Case 2 : Checking Engine Cylinder Wear
• We suspect wear in an engine cylinder. Need to measure the diameter to determine if it’s beyond the service
limit.
• Demo: Choose a small measuring head to enter the cylinder. Gently rotate the gauge to get a minimum
diameter reading.

• Key Point: Bore gauges help diagnose engine wear by revealing changes in cylinder diameter.

Case 3 : Inspecting Valve Seats
• We ‘re repairing a cylinder head and need to ensure the valve seats are within the correct diameter.
• Demo: Use a specialized measuring head designed for valve seats. This head might have ball contacts or
other features to reach specific areas.
• Key Point: Bore gauges with special attachments allow for measurements in hard-to-reach or oddly shaped
bores, like valve seats.

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CITS : CG & M - Fitter - Exercise 42