TM9-4120-370-14
TO35E9-229-1
Meter Lead
Pos
Neg
Term. 1
20 ohms or less
Term. 2
1000 ohms or more
Term. 1
Term. 3
1000 ohms or more
Term. 2
Term. 1
1000 ohms or more
Term. 2
Term, 4
Term. 4
Term. 2
20 ohms or less
1000 ohms or more
Term. 3
Term. 4
Term. 1
20 ohms or less
Term. 3
Term. 3
20 ohms or less
Term. 4
1000 ohms or more
Term. 1
Term. 4
1000 ohms or more
Term. 4
Term. 1
Term. 2
1000 ohms or more
Term, 3
Term. 3
Term. 2
80 ohms or less
NOTE
A diode bridge will sometimes act differently under a power test than resistance tests
indicate, To perform a power test, apply 28 volts ac across terminals 1 and 4 and use
a dc voltmeter with negative probe on terminal 2 and positive probe on terminal 3 to test
output voltage. The meter should read 24 * 5 volts. If output voltage is not within limits,
replace rectifier,
(11) Check gasket in end cap for general condition. Replace if damaged.
(12) Reassemble by attaching four filter leads to the correct rectifier terminals, slip end cap of tube, and install
four screws and washers,
c.
Disassembly
(1) Using screwdriver, remove four screws and flat washers from end cap,
(2) Pull end cap away from tube,
(3) Tag and disconnect four leads from rectifier (CR).
(4) Using wrench, remove nut, lock washer, and flat washer from rectifier stud.
(5) Remove rectifier.
(6) Using wrench, loosen and remove nut and lock washer from each of the four filters
(7) Remove filters.
d. Reassembly
(1) If a new filter is being installed, solder wire leads in place and install terminals.
(2) Insert filter into tube assembly and secure filter with nut and lock washer,
(3) Insert rectifier mounting stud through hole in end cap and secure with nut, lock washer, and flat washer,