ORIFICE 1261645 - Caterpillar

Safety Section
General Hazard
Illustration 2 g00702020Information
Wear a hard hat, protective glasses, and other protective equipment, as required. Do not wear loose clothing or jewelry that can snag on controls or on other parts of the equipment. Make sure that all protective guards and all covers are secured in place on the equipment.Know the appropriate work site hand signals and the personnel that are authorized to give the hand signals. Accept hand signals from one person only.Obey all local regulations for the disposal of liquids.Do not allow unauthorized personnel on the equipment.Unless you are instructed otherwise, perform maintenance with the equipment in the servicing position. Refer to the Operation and Maintenance Manual for the procedure for placing the equipment in the servicing position.Crushing Prevention and Cutting Prevention
Support the equipment properly before you perform any work or maintenance beneath that equipment. Do not depend on the hydraulic cylinders to hold up the equipment. Equipment can fall if a control is moved, or if a hydraulic line breaks.Stay clear of all rotating and moving parts.Safety Icon Nomenclature
Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility.
Personal Protection/Important Information
Illustration 3 g02166423
Personal Protection/Important Information
Hazard Avoidance
Crushing Hazard (foot)
Crushing Hazard (hand)
Pinch PointContact Information
For product support questions concerning this tool, contact the Dealer Service Tools hotline at:USA: 800-542-8665, Option 1International: 1-309-578-7372Note: Continuing improvement and advancement of product design can mean some photographs or illustrations in this publication will show details that are different from your service tool.General Information Section
Introduction
Illustration 4 g06027044The 477-3197 Piston Ring Groove Gauge is used to check the top ring groove of pistons used in C-27 Engines. The gauge is only used on steel crown, two piece pistons.The 480-4204 Piston Ring Groove Gauge Group includes the 477-3197 Piston Ring Groove Gauge, 6V-3073 Storage Case, foam inserts for storage case, NEHS1227 Tool Operating Manual and NEEG3174 Storage Case Decal.The 477-3197 Piston Ring Groove Gauge is a Go/NoGo design. If the gauge passes through the top ring groove of the piston, the piston cannot be reused. If the gauge does not pass through the ring groove, the piston can be reused.Checking Procedure
Thoroughly clean the top ring groove of the piston.
Illustration 5 g06027040
477-3197 Slide Gauge into Top Ring Groove aligned with the Pin Bore
Slide the 477-3197 Piston Ring Groove Gauge into the ring groove. The gauge should be aligned with the pin bore, as shown in Illustration 5.
Turn the gauge 90 degrees and check the ring groove again.
Illustration 6 g06027038
If the gauge does not pass through the ring groove, the piston can be reused.Maintenance
Cleaning
Clean the tooling after each use, using a non-solvent based cleaner.Storage
Store the tooling in a clean, dry location to prevent rust or corrosion. Tooling can be damaged by moisture or high humidity.
The tool should be stored in the most stable position.Tool Disposal
At the end of the operational life