TM 10--3510--221--24
0089 00--1
AIR PRODUCT PRESSURE LO
0089 00
THIS WORK PACKAGE COVERS:
Troubleshooting Air Product Pressure Lo Fault
INITIAL SETUP:
Maintenance Level
Materials/Parts
Unit
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
Power must be applied at main control
enclosure (WP 0010 00).
1. Open access door to gain access to air system.
2. Use maintenance menu to start air system (WP 0010 00).
3. Observe air compressor operation.
Is air compressor operating?
YES Go to step 4.
NO Go to AIR COMPRESSOR DOES NOT TURN ON FAULT (WP 0090 00).
4. Use maintenance menu to stop air system.
5. Close manual valve at outlet of air tank.
6. Open petcock at bottom of air tank. Allow air pressure to vent then close petcock.
7. Use maintenance menu to start air system then measure time required for air system to pressurize and air
compressor to stop.
Does air system pressurize > 123 PSIG in less than 8 minutes?
YES Go to step 8.
NO Go to AIR TANK NOT PRESSURIZING FAULT (WP 0086 00).
8. Open manual valve at outlet of air tank.
9. Use maintenance menu to start air system.
10. Check for air venting from petcock at outlet of pressure regulator.
Is air venting from petcock?
YES Close petcock. Return to normal operation.
NO Go to step 11.
11. Check for air venting from petcocks on four front air bags.
Is air venting from petcock(s)?
YES Close petcock(s). Return to normal operation.
NO Go to step 12.
