TM 10-8145-222-23
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REPAIR CONTINUED
5. Operate unit in accordance with normal operating procedures to verify proper operation after replacement of
6. Place MTRCS back into desired mode of operation (TM 10-8415-222-10, Operating Procedures).
Replace Capacitor
WARNING
Capacitors can store electrical power for extended periods of time after being
disconnected from power supply. A bleed resistor is connected in the capacitor circuit
to discharge this power more quickly. Do not touch capacitors terminals for the first
five minutes after the power is disconnected.
NOTE
There are two capacitors (C4 and C5) installed within the MPC box. If replacing a
capacitor, always replace both capacitors, as the likelihood of both being damaged is
high. This procedure is applicable to replacing either capacitor C4 or C5.
1. Wait five minutes to allow stored energy to dissipate from capacitors (Figure 4, Item 5) through bleed resistor.
2. Cut and remove mounting strap (Figure 4, Item 4) securing capacitor (Figure 4, Item 5) to holder (Figure 4,
Item 6) on base of MPC box (Figure 4, Item 7).
3. Remove wire ties as needed along length of capacitor wiring to facilitate removal of capacitors.
4. Remove capacitor (Figure 4, Item 5) from base of MPC box (Figure 4, Item 7).
5. Cut two wires (Figure 4, Item 8) from capacitor (Figure 4, Item 5) as close as possible to capacitor.
6. Remove capacitor (Figure 4, Item 5).
7. Prepare existing wires (Figure 4, Item 8) and wires on new capacitor (Figure 4, Item 5) for splicing.
8. Splice new capacitor (Figure 4, Item 8) to existing wires (Figure 4, Item 8).
9. Secure capacitors (Figure 4, Item 8) together using tape.
10. Install capacitors (Figure 4, Item 5) onto holder (Figure 4, Item 6) on base of MPC box (Figure 4, Item 7) and
secure using mounting strap (Figure 4, Item 4).
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