MTD 464 Betriebsanleitung PDF herunterladen (Seite 303)

100

101

ARMY TM 9-6115-464-34

AIR FORCE TO 35C2-3-445-2

NAVY NAVFAC P-8-624-4

Figure 3-118. Tactical Relay Resistor Assembly, Exploded View

(16) Test dc relay assembly as follows:

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)

(m)

Apply 24 Vdc to terminals 6 and 15 (figure 3-121).

Use an ohmmeter to check for continuity across terminals 5 and 17.

Check for open circuit across terminals 4 and 16.

Install a jumper between terminals 9 and 6.

Apply 24 Vdc to terminals 12 and 15 with 12 positive.

Check for continuity between terminals 5 and 17 and for open curcuit between terminals 4 and 16.

Install a jumper between terminals 23 and 6.

Apply 24 Vdcto terminals 21 and 15 with 21 positive.

Check for continuity between terminals 5 and 17 and for open curcuit between terminals 4 and 16.

Apply 24 Vdc to terminals 13 and 15.

Check for continuity between terminals 1 and 14 and between terminals 2 and 15. Check for open

curcuit between terminals 3 and 15.

Apply 120V AC to terminals 18 and 22. Use an ohmmeter check for resistance of 2,500 ohms

between terminals 19 and 20 and 7 and 8.

Check resistors R3, R6, and R9 for correct values given in figure 3-121.

(17) Replace defective dc relay assembly components (iterns 1 through 21, figure 3-122).

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