MTG AS 2187394 - Caterpillar

Fire hazard Safety Section
At operating temperature, the hydraulic tank is hot and under pressure.Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.
Personal injury or death can result from escaping fluid under pressure.Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
To prevent dirt and contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected.This action also lessens the chance of oil spills.
General Information
Introduction
Nomenclature
Illustration 3 g02870499
155-1536 Valve Recession Tool Kit Refer to Table 1 for item identification
Table 1
Contents of 155-1536 Valve Recession Tool Kit    
Item     Qty     Part No.     Description    
(1)     1     258-6575     Digital Indicator    
(2)     1     5P-4814     Clamp Collet    
(3)     1     155-1579     Base Assembly    
(4)     1     155-1683     Rod Assembly    
(5)     1     155-1643     Projection Gage Block    Additional Contact Information
For additional product support questions concerning this tool, contact the Caterpillar Dealer Service Tools Hotline at:USA: 1-800-542-8665, Option 1International:: 1-309-578-7372Specifications
For exact valve recession specifications, refer to the specific engines Operation and Maintenance manual, Valve Stem Projection section.Setup and Measuring Procedure
Tighten the lower end of 5P-4814 Clamp Collet (2) to 155-1579 Base Assembly (3) .
Insert 258-6575 Digital Indicator (1) all the way into the collet end of the base assembly. Firmly tighten the collet to hold the indicator.
Set the tool assembly on 155-1643 Projection Gauge Block (5) .
When checking the valve recession set the indicator on the upper step on the side marked "GAGE DIM 66.08" of the projection gauge block, except for G3520C Engines or engines with 12 mm (0.47 inch) exhaust valves. Refer to Step 3.b for these engines.
When checking the valve recession on G3520C Engines or engines with 12 mm (0.47 inch) exhaust valves, set the indicator on the lower step on the side marked "GAGE DIM 70.08" of the projection gauge block.
Illustration 4 g02870498
Indicator Positioning
Turn the indicator to "ON". Select either millimeters or inches by pressing the "in/mm" button above the digital display. Press