Press-Fit Piston Pin

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 24086-C Piston Pin Remover/Installer Set

IMPORTANT:

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.
The disassembly procedure, as shown, is to be used for diagnostic purposes only.

Remove the connecting rod bearings (3) from the rod (2) and cap (4).

Fig 1: View Of Piston & Connecting Rod Components

GM1366359

Courtesy of GENERAL MOTORS CORP.

Using piston ring pliers, remove the piston rings from the piston.

Fig 2: Removing/Installing Piston Rings

GM490763

Courtesy of GENERAL MOTORS CORP.

Install fork insert J 24086-920A into J 24086-10 .

Fig 3: View Of J 24086-920A & J 24086-10

GM533477

Courtesy of GENERAL MOTORS CORP.

Install the piston and connecting rod assembly onto J 24086-10 .
Install J 24086-107 to the piston pin.
Install J 24086-88A through the fixture and to the J 24086-107.

Fig 4: View Of J 24086-107 & J 24086-88A

GM533478

Courtesy of GENERAL MOTORS CORP.

NOTE: After the installer hub bottoms on the support assembly, do not exceed 35 000 kPa (5,000 psi) pressure, this could cause damage to the tool.

Press the piston pin from the piston and connecting rod assembly.

Fig 5: View Of J 24086-88A

GM533480

Courtesy of GENERAL MOTORS CORP.