PUMP GP-PISTON 3973970 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-7262     Telescoping Magnet     1    Start By:
Remove the spacer plate. Refer to Disassembly and Assembly, "Spacer Plate - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00538891
Use Tool (A) to remove valve lifter (1), as shown. Put identification marks on the valve lifters for installation purposes.
Repeat Step 1 for the remainder of the valve lifters.
Check the diameter of the valve lifters. The diameter of a new valve lifter must be 33.285 0.015 mm (1.3105 0.0005 inch). The diameter of the bore in the cylinder block for a new valve lifter must be 33.388 0.050 mm (1.3145 0.0020 inch). The maximum permissible clearance between the valve lifter and the valve lifter bore in the cylinder block must be 0.30 mm (0.012 inch).Installation Procedure
Table 2
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-7262     Telescoping Magnet     1    
Illustration 2 g00538891
Put 8T-2998 Lubricant on valve lifter (1) prior to installation. Install valve lifter (1) with Tool (A) in the original location in the cylinder block.
Repeat Step 1 for the remainder of the valve lifters.End By: Install the spacer plate. Refer to Disassembly and Assembly, "Spacer Plate - Remove and Install".