2006/07/03 Caterpillar

The Stud Tensioner Tool Groups for 3600, C280, and G3600 Engines Require Different Hydraulic Pressures {0703, 0705, 1100, 1202, 1203}

Usage:

3616 1FN

Engine:
All 3600 Engines
All C280 Engines
All G3600 Engines

Engine News SEBD9405, 3 July 2006, "207-5034 Stud Tensioner Tool Gp and 191-5320 Stud Tensioner Tool Gp Require Different Hydraulic Pressures". The article has been revised to add C280 Engines and to change the pressures in Table 1.

ReferenceDisassembly and Assembly, SENR3600, "3606 and 3608 Engines"

ReferenceDisassembly and Assembly, SENR3594, "3612 and 3616 Engines"

ReferenceDisassembly and Assembly, RENR5085, "C280-6 and C280-12 Engines"

ReferenceDisassembly and Assembly, KENR6071, "C280-12 and C280-16 Engines"

ReferenceDisassembly and Assembly, SENR4259, "G3606 and G3608 Engines"

ReferenceDisassembly and Assembly, SENR5535, "G3612 and G3616 Engines"

Two different stud tensioner tool groups are available for tightening the nuts on the studs for the cylinder heads and for the main bearing caps. The stud tensioner tool groups require different hydraulic pressures in order to achieve the correct tension.

The referenced Disassembly and Assembly manuals refer to the stud tensioner tool groups. The references are in both the removal procedures and the installation procedures. Write the tool part numbers and the respective, corrected pressures in each manual. Also write a reference to this article in each procedure.

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NOTICE

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.

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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)