WASHER 4724951 - Caterpillar

Installation Of Self-Sealing Probe Adapter
1. The earlier probe adapter had flats on the seal retainer. The current seal retainer does NOT have flats on it. The flats were removed to help prevent accidental removal of the seal retainer. The seal retainer is installed during assembly with a thread lock material and tightened to a specific torque. Prior to installation, check probe adapters for a loose seal retainer by removing the plug. The seal retainer should not move as the plug is removed. DO NOT use adapters that have a loose retainer. Do not attempt to retighten a seal retainer that has come loose because the seal between the seal retainer and bladder will be damaged.2. The seal bladder is punctured during manufacturing with a sharp instrument. Make sure that the seal bladder has been prepunctured before installation by lubricating a clean, smooth probe and inserting the probe into the adapter. Look at the bladder while inserting the probe. A prepunctured bladder will have an obvious opening on the surface and very little force will be required to insert the probe through the bladder. DO NOT use an adapter that has NOT been prepunctured. Do not attempt to puncture a bladder that has not been prepunctured. To do so may damage the seal between the seal retainer and the bladder and also tear the bladder which will cause the adapter to leak when it is installed.3. Remove the probe and reinstall the plug. Tighten the plug enough to hold it in place.4. Install the probe adapter on the machine. This should be done while the machine is shut down, cool and