VALVE & MTG GP-RELIEF 2271968 - 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.
Table 1 provides the proper hydraulic pressures for the stud tensioner tool groups.
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)    
40 000 1520 kPa (5,800 220 psi)    
191-5320 Stud Tensioner Tool Gp
301-5215 Stud Tensioner Tool Gp    
111500 3950 kPa (16170 575 psi)    
125000 4920 kPa (18130 715 psi)    Note: The 191-5320 Stud Tensioner Tool Gp was canceled and replaced by the 301-5215 Stud Tensioner Tool Gp.