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Home > Ordnance Documents and other related manuals > > Figure 10. APU Access Plate.
Part D- Troubleshooting the APU System
Figure 11. APU Fuel Return Line Location And Components.

Troubleshooting the Auxiliary Power Unit (APU) M992 carrier, Ammunition,
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NOTE:
Safe operation of electrical components requires proper grounding.
In  all  troubleshooting  procedures  of  components  that  depend  on
screws or physical contact for their electrical ground, use a jumper
wire connected between the component and the hull to check component
operation.
If the component then operates, a faulty ground is
indicated.  When such a condition exists, clean the ground contact
surfaces and tighten the screws or repair/replace ground wires that
were found to be defective.
2.
Troubleshooting The APU Fuel System.
Before attempting to troubleshoot the fuel system, the left projectile rack
must be moved to the rear of the vehicle.  With the projectile rack at the
rear  of  the  vehicle,  the  APU  access  plate  removal  procedure  can  be
accomplished.
To remove the APU access plate, remove 10 screws (Item 1,
Figure 10), 10 lockwashers (Item 2, Figure 10), the gasket (Item 3, Figure
10), and the access plate (Item 4, Figure 10).
Be sure to discard the
removed lockwashers and replace them with new ones.
Figure 10.
APU Access Plate.
13
OD1702






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