KIT-PISTON 5081900 - Caterpillar

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Table 1
421-1011 Parts Description    
Item No.     Part No.     Description    
1         Tool Assembly    
2         Handle-lever    
3         Block Assembly Gauge    
4     6V-3186     Collet    
5     6V-7918     Wrench    
6         Foam-Middle    
7         Foam-Bottom    
8     6V-3075     Indicator-Dial    
Not shown         Foam-Top    
Not shown         Case-Plastic    
Not shown     NEEG3156     Decal    Operation Section
The operation section illustrates components and describes the operation of the 421-1011 Valve Recession Tool Group on the G3500 Series Engine.Note: This standard work will describe the most consistent way to zero and measure valve recession on the G3500/C/E/H product line.
Dirt and other contaminants can damage precision components, such as valve train parts and fuel injectors. Tooling cleanliness is an important factor. Before tooling assembly, clean all parts and allow to air dry. Perform assembly procedures on a clean work surface.
Zero the gauge.
Ensure that all couplings are adequately tightened so gauges are fixed.
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Valve Recession Gauge and Valve Recession Tool Components
Place gauge stand on zeroing gauge as seen in Illustration 5.Note: For best results, always locate the gauge stand legs toward the front of the gauge zeroing base guides. This will ensure that minimal amount of variation is experienced while zeroing the gauge.
Loosen the screw on the upper right corner of each gauge and rotate until the large dial is aligned with "0".
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Remove rocker arm shaft assembly and bridges from all heads. (See illustration 6.)
Place the gauge stand on the head by aligning the dowels with the two guides on the bottom of the gauge stand. (See Illustration 7)
Ensure that all three legs are touching the head with no debris below them.
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Measurement of Valves
Record measurement from each gauge noting the location of each measurement (in board, outboard, intake, exhaust).
Repeat steps 3 and 4 for all other heads on the engine.
Periodically put gauge stand back onto gauge block, and verify that all of the dial indicators still zero.Maintenance Section
Inspection
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Table 2
1     Tool Assembly    
2     Handle-Lever    
3     Block Assembly-Gauge    
4     6V-3186 Collet    
5     6V-7918 Wrench    
6     Foam-Middle    
7     Foam-Bottom    
8     6V-3075 Indicator-Dial    Inspect and clean all of the parts on the 421-1011 G3500 Engine Tool Group before each use. Contaminants can cause rapid engine wear and shortened component life.If components are worn or damaged, they must be replaced.
Inspect all welds and check for damaged, cracked, or bent components.
Inspect the thrust bearing. Clean and lubricate, as needed for smooth operation.
Check for cracks and damaged or galled threads.
Clean the threads on the spring compression rod assembly frequently and lubricate with a high-pressure lubricant to prevent thread galling.
Have tools inspected annually by an approved dealership inspector. Maintain a written record of all inspections.Cleaning
Clean tools using a high quality cleaning fluid.