SPACER 3P5078 - Caterpillar

Caterpillar Products:
3500 Family Generator Sets and Power Modules
3500C Engines
G3500 Family Generator Sets and Power Modules Engine: Commercial
3500 and 3500B
G3500 FamilyEngine News SEBD9892, 21 August 2013, "Calculating Cylinder Liner Projection for 3500, 3500B, 3500C, and G3500 Engines". Disregard the previous article. Table two has been updated.Measuring Wear of the Cylinder Block at the Cylinder Liner Contact Surface
Illustration 1 g02657157
Points at which to measure the depth of the wear around the circumference of the cylinder bore
Illustration 2 g02658239
Using tool (A) to measure the depth of the wear in the cylinder block under the cylinder liner flangeUse tool (A) to measure the depth of the wear in the cylinder block in the area under the cylinder liner flange. Take measurements at the eight points that are identified in Illustration 1. Illustration 2 demonstrates proper placement of the dial indicator between the tapped hole and the cylinder bore.If the depth of the wear under the cylinder liner flange is greater than 0.013 mm (0.0005 inch), the block must be salvaged according to Special Instruction, REHS7133, "Installation of the Cylinder Liner 353-5617 Insert and 353-5618 Insert for 3500 and G3500 Engines".Calculating Cylinder Liner Projection
The following method for calculating the liner projection is the preferred method under these circumstances:
Single cylinder head joint repair
Engine rebuildNote: When installation of spare used spacer plates and cylinder liners is desired, having the stocked parts measured and matched will reduce repair time.Note: The method of measuring liner projection that uses the 8T-0455 Liner Projection Tool Group can still be used.Regardless of the procedure, the contact surface of the cylinder block for the liner flange and spacer plate must be thoroughly clean before installation of replacement parts.If a new spacer plate and cylinder liner will be installed in the same cylinder, there is no need to calculate the cylinder liner projection. The production process control for the parts is adequate.If a used spacer plate or cylinder liner will be installed, perform the following measurement and calculation procedure.
Table 1
Required Tools    
A     8T-0455 Liner Projection Tool Group    
B     Digital micrometer with a resolution of 0.001 mm    The cylinder liner projection is now a calculation based on measurement of parts that uses the following dimensions:
The average thickness of the flange for the 211-7826 Cylinder Block Liner, measured in four places
The average thickness of the 110-6994 Spacer Plate, measured in four places
The nominal manufactured thickness of a new 144-5692 Plate Gasket A new 144-5692 Plate Gasket must be installed with the spacer plate and cylinder liner.Use the following procedure to calculate the cylinder liner projection.
Illustration 3 g02657236
(X) Average thickness of the spacer plate (Y) Nominal thickness of the spacer plate gasket (Z) Average thickness of the cylinder liner flange
Use tool (B) to