Hummer H2. Manual — part 1813
Fig. 432: View Of J 24086-920 & J 24086-10
Courtesy of GENERAL MOTORS CORP.
IMPORTANT:
z
Disassembly of the piston, press-fit design piston pin, and
connecting rod may create scoring or damage to the piston pin and
piston pin bore. If the piston, pin, and connecting rod have been
disassembled, replace the components as an assembly.
z
If reusing the piston and connecting rod assembly, install the
assembly to the original cylinder and corresponding crankshaft
journal.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
1. Install fork insert J 24086-920 into J 24086-10 . See Special Tools and Equipment .
Fig. 433: Connecting Rod Positioning Tab, Flat Flange & Mark On Top Of Piston
Courtesy of GENERAL MOTORS CORP.
z
The assembly procedure, as shown, is to be used for diagnostic
purposes only.
CAUTION: Avoid contact with HOT components. Wear safety glasses and
protective gloves to avoid personal injury.
NOTE:
Applying excessive heat to the connecting rod may damage or distort the
rod. Rod temperature SHOULD NOT exceed 315°C (600°F). At this
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
2. Use a torch and apply MILD heat to the pin end of the connecting rod. Mild heating of the connecting rod
will ease in piston and pin assembly.
3. Identify the positioning tab (1) or flat flange (3) of the connecting rod. When properly assembled, the
positioning tab or flat flange of the rod and the mark (2) on the top of the piston should both be facing the
front of the engine.
Fig. 434: Piston, Connecting Rod & J 24086-16A
Courtesy of GENERAL MOTORS CORP.
4. Assemble the piston, the connecting rod, and the J 24086-16A.
temperature the end of the connecting rod will turn a straw color upon
visual inspection.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
Fig. 435: Adjusting J 24086-9 To G-4
Courtesy of GENERAL MOTORS CORP.
5. Adjust the J 24086-9 to I 8.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
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