Usage:
Problem:
Investigation has revealed that many of the 5P-2420 Testing and Lubrication Units are not providing the necessary vacuum to test track joints, rollers, or idlers.
Solution:
In order to verify the 5P-2420 Testing and Lubrication Unit's ability to pull sufficient vacuum, the Marsh vacuum gauge and reducer specified below must be installed at fitting A (in place of the existing 5P-2707 gauge) as shown in the Illustration. Once the Marsh gauge has been attached, check how much vacuum the 5P-2420 Testing and Lubrication Unit can pull. If the unit does NOT pull 28' Hg, the pump needs to be rebuilt or the system should be checked for other leaks.
The 5P-2420 Testing and Lubrication Unit's pump can be rebuilt using the 6V-3047 Rebuild Kit. The manual for the 5P-2420 Testing and Lubrication Unit provides the directions and frequency to perform this maintenance. After the unit's pump has been rebuilt, verify that the unit can pull 28' Hg vacuum. Once the unit is operating properly, install the Marsh vacuum gauge at location B. Install the Marsh gauge using a nipple and tee connector at the manifold, as shown in the Illustration. This will allow operators to accurately check vacuum levels. Reinstall the 5P-2707 Gauge in its original location A.
The 5P-2420 Testing and Lubrication Unit is used to test and fill track joints, rollers, and idlers.
High elevations decrease atmospheric pressure, which decreases the amount of vacuum which can be pulled.
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