VALVE GP-RELIEF 4237711 - Caterpillar

If the incorrect pressure is applied during the tensioning procedure, engine damage will result. In order to achieve the correct tension without damaging the engine, use the correct pressure for the specific tool group and application.
The following chart provides the proper hydraulic pressures for the stud tensioner tool groups in both applications.
Table 1
Tool Group Pt. No.     Pressure for Tensioning Studs for Main Bearing Caps     Pressure for Tensioning Studs for Cylinder Heads    
207-5034 Stud Tensioner Tool Gp     65 000 2400 kPa (9,425 348 psi)    
4000 1520 kPa (5,800 220 psi)    
191-5320 Stud Tensioner Tool Gp    
108 000 3950 kPa (15,670 573 psi)    
121 500 4920 kPa (17,615 713 psi)    The Service Manual modules that follow refer to a stud tensioner tool group. The references are in the installation procedures for the cylinder heads and for the main bearing caps. Please write the tool part numbers and the respective pressures for both applications in each manual. Also write a reference to this article in each procedure.
3606 and 3608 Engines, Disassembly and Assembly, SENR3600-03
3612 and 3616 Engines, Disassembly and Assembly, SENR3594-08
G3606 and G3608 Engines, Disassembly and Assembly, SENR4259-09
G3612 and G3616 Engines, Disassembly and Assembly, SENR5535-09