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You are here: Home / Instrument Maintenance / Maintenance for Compression Gland Lid

Maintenance for Compression Gland Lid

Warning!Important Safety Information
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Maintaining the Compression Gland Lid is simple. The O-ring around the Compression Gland Base should be kept clean and lubricated with petroleum jelly. Occasionally unscrew the Compression Gland Screw and take out the Compression Gland Insert and Compression Gland Gasket inside for cleaning. We recommend lubricating the Compression Gland Screw and Base threads with a lubricant like Lithium Grease to maintain the threads and ensure safe and easy operation. Clean the Compression Gland Gasket with ARMOR ALL or some other type of rubber conditioner for optimal use. Over time the compression gland gasket will become worn and should be replaced. If additional gaskets are needed, you may purchase them directly from PMS Instrument Company.

The threads of the Compression Gland Base and Screw should be inspected at this time for wear. If the two parts do not thread together easily or they are discolored or deformed in any way, contact PMS Instrument Company for replacement parts.

This is the “Compression Gland Lid rebuild kit”. When ordering this kit, specify which size Compression Gland Gasket you want.

Compression Gland Maintenance PMS Instruments

Here is the Compression Gland Lid dis-mantled

Parts from left to right are:

  1. Chamber Lid
  2. Compression Gland Base – O-Ring below it.
  3. Compression Gland Gasket – (size 006 O-Rings and screws below)
  4. Compression Gland Insert
  5. Fiber Friction Washer
  6. Compression Gland Screw
Compression Gland Maintenance PMS Instruments

Lubricate each small (size 006) O-Ring lightly with petroleum jelly and place into recessed screw hole.

Compression Gland Maintenance PMS Instruments

Next, lubricate the large (size 330) O-Ring and place over the Compression Gland Base.

Compression Gland Maintenance PMS Instruments

Slide the Compression Gland Base into the lid, align the screws and tighten down screws into place.

Compression Gland Maintenance PMS Instruments

Flip over the lid and install the Compression Gland Gasket into the Compression Gland Base.

You can clean this with Armor All or other type of rubber conditioner for optimal operation.

Compression Gland Maintenance PMS Instruments

Next, place the Compression Gland Insert over the Compression Gland Gasket. Flat side facing up.

If your instrument is equipped with the Almond Sealing System, place the Insert flat side down.

Compression Gland Maintenance PMS Instruments

Put the Friction Washer on top of the Compression Gland Insert.

Lubricate the threads of the Compression Gland Screw lightly with white Lithium Grease.

Compression Gland Maintenance PMS Instruments

Install the Compression Gland Screw into the Compression Gland Base. To ensure proper alignment, turn the Compression Gland Screw counter-clockwise 1/4 turn or until you feel the thread engage.

Care should be taken to not cross-thread the two pieces.

When tightening the Compression Gland Screw, be careful not to crush the Friction Washer.

Compression Gland Maintenance PMS Instruments
Compression Gland Maintenance PMS Instruments

The Compression Gland Cover is now ready for use and should look like the above pictures.

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Maintenance Topics:

  • Instrument Maintenance
    • Adjusting the “Brass” – Control Valve
    • Adjusting the “Stainless Steel” – Control Valve
    • Cleaning the O-Ring on the lid
    • Cleaning the Safety Valve
    • Digital Gauge Battery Replacement
    • Instrument Quick-Connect Couplers
    • Maintenance for Compression Gland Lid
    • Maintenance for the Portable Tank
    • Testing the instruments safety features
  • Maintenance for the Pump-Up Chamber
    • Pump-Up Chamber is leaking
    • Pump-Up Chamber will not increase in pressure
    • Basic Maintenance of Pump-Up Chamber
    • Changing O-ring on Lid of Pump-Up Chamber
    • Changing Piston Cup on Pump-Up Chamber
    • Lubricating the piston of the Pump-Up Chamber

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