2026-04-16

Desiccant Heat Pump (Add-On) (Remove and Replace)

Correction code 18202022 0.10 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and FRT listed above reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure you are wearing proper PPE when performing the procedure below. NOTE: See Ergonomic Precautions for safe and healthy working practices.

  • 2026-04-16: Released new procedure.
Informational PurposesAn informational icon, calling your attention
Note
This procedure for the Desiccant (Remove and Replace) is to be used when, while working on the refrigerant system where the refrigerant is recovered, it is found that the desiccant needs to be replaced. Add correction code 18202022 as a separate correction within the same activity to the Service Visit.
Equipment:
  • 1081547-00-B SMALL SLIDE HAMMER
  • 1985068-00-A FEMALE TO FEMALE THREADED ADAPTER

Remove

  1. If present, remove and discard the dust cap from the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use of the following tool(s) is recommended:
    • Torx T30 socket
  2. Use snap ring pliers to remove and discard the accumulator cap snap ring.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Wear the Face Shield throughout the entire process to protect against foreign objects flying out under pressure.
  3. Thread the female to female threaded adapter onto the slide hammer, the thread adapter onto the accumulator cap, and then use the slide hammer to remove the accumulator cap.
    Informational PurposesAn informational icon, calling your attention
    Note
    Discard the accumulator cap after removal.
  4. Use needle nose pliers to remove the desiccant bag from the accumulator.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    The video(s) included in this procedure are meant as an overview for supplemental purposes only. Follow all of the steps listed in the procedure to avoid damage to components and/or personal injury.
  5. Weigh the desiccant bag. This is considered the "wet weight."
  6. Determine the "dry weight" of the desiccant bag: inspect the bag for a label that contains the Part Number (P), Serial Number (S), and Dry Weight (W). If the label is missing, or if the dry weight is not visible, assume the dry weight is 90.4 grams.
  7. Subtract the dry weight from the wet weight. This is the amount of oil that must be added to the system in addition to the oil that was removed during refrigerant recovery. Note this amount for later.

Install

  1. Install the desiccant bag into the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the tab on the desiccant bag faces upward.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    The video(s) included in this procedure are meant as an overview for supplemental purposes only. Follow all of the steps listed in the procedure to avoid damage to components and/or personal injury.
  2. Lubricate the new accumulator cap O-rings with the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications. Then install the cap on the accumulator.
  3. Use the snap ring pliers to install the new accumulator cap snap ring.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the snap ring is fully seated in the groove on the inside of the accumulator bore.
  4. Hand-tighten the new dust cap to the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Screw the dust cap until it bottoms out on the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use of the following tool(s) is recommended:
    • Torx T30 socket