Dismantling, Cleaning, and Inspecting an Engine
Cylinder & Piston Condition Name ______________________________ X142
PROCEDURE:
1. Read the booklet “Determining Cylinder and Piston Condition”, and ask your teacher for a question from the material in the booklet.
CHECK POINT _________
2. Complete the charts below – take all measurements as instructed by your teacher. Remember that there are two measurements each required for taper and out of round - include both measurements in the “Measurements Obtained” box provided
A. Cylinder
| |Specified |Maximum Allowable Wear|Measurements Obtained |Wear Found |Useable |Repair / |
| | | | | | |Replace |
|Diameter (Bore) | | | | | | |
|Taper | | |- | | | |
|Out-of-Round | | |- | | | |
B. Piston
| |Specified |Maximum Allowable Wear|Measurements |Wear Found |Useable |Repair / |
| | | |Obtained | | |Replace |
|Skirt Diameter at 90o to pin | | | | | | |
|Ring Side Clearance | | | | | | |
|Ring End Gap – Comp Ring 1 | | | | | | |
|Ring End Gap – Comp Ring 2 | | | | | | |
|Piston Pin Diameter | | | | | | |
|Piston Pin Bore | | | | | | |
C. Connecting Rod Small End Bearing
| |Specified |Maximum Allowable Wear|Measurements Obtained |Wear Found |Useable |Repair / |
| | | | | | |Replace |
|Connecting Rod Small End Bearing | | | | | | |
|Diameter | | | | | | |
D. Clearance (Clearance = measured cylinder or bore diameter – measured piston or pin diameter)
| |Specified |Measured |Useable |Repair / |
| |Clearance |Clearance | |Replace |
|Piston Pin to Bore | | | | |
|Piston Pin to Con. Rod | | | | |
|Piston to Cylinder | | | | |
CHECK POINT ________ (3.0 hr.)
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