Thermal Paste Application

The following instructions explain how to apply thermal paste to the thermal pipe in the iMac (Flat Panel) computer. Failure to follow these instructions could cause the computer to overheat and damage internal components.

Tools

This procedure requires the following tools:

  • Plastic stylus or nylon probe tool (922-5065) to remove the old thermal paste
  • Thermal paste (922-4757), each tube contains 4-5 applications

Procedure

  1. Thoroughly clean the thermal film from the mating surfaces (circled below). Use a plastic stylus to scrape the surfaces clean. Note: Do not use an abrasive material or liquid cleaner.
  2. Thoroughly clean the thermal film from the mating surfaces (circled below). Use a plastic stylus to scrape the surfaces clean. Note: Do not use an abrasive material or liquid cleaner.

2 Squeeze a drop of thermal paste onto the middle of the thermal pipe surface as shown below. Note: In testing, the drop of thermal paste shown below completely covered the entire thermal pipe surface. Place at least this much paste on the thermal pipe.

3. Close the bottom housing. Securely fasten the four mounting torx screws very firmly (at least 17 in.-lbs. is necessary). Important: If you don't have access to a calibrated torque driver make certain that the screws are tightened firmly. You don't need a torque driver; however, there is one available from Apple if you feel you need it. The torque driver part number is 076-0899.

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  • HAYLEY
    How to apply thermal paste on powermac g4 flat panel?
    8 years ago

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