Replacement. Replace defective circuit
breaker CB103 (42, figure 4-18) as follows:
At rear of panel, tag wire leads
washers which secure leads to
the circuit breaker.
mounting hardware (40 and 41)
and remove circuit breaker.
Installation. Install circuit breaker
onto panel with mounting hardware
(40 and 41). Attach wires with screws
and washers. Remove tags from
4-30. PANEL MOUNTED RECEPTACLES J103 AND
J104 THROUGH J109 (54, 7 and 15, figure 4-18).
Defective receptacles may be replaced
individually, as necessary.
At rear of panel, tag and remove
wires from receptacle J103 (54). Tag
and unsolder wires from receptacles
J104 through J109 (7 and 15).
Remove receptacle J103 (54) by
removing screws (48), nuts (49),
cover (50), gasket (51), screws (52),
and nuts (53).
To remove receptacles J104 through
J109 (7 and 15), unscrew dust cover
(3 or 12) and remove mounting
hardware (13 and 14).
Installation. Install receptacle J103 (54)
with screws (52), and nuts (53). Then
position gasket (51) and cover (50) and
secure with screws (48) and nuts (49).
Resolder wires and remove wire tags.
Install receptacles J104 through J109 (7 and
15) with mounting hardware (13 and 14).
Reconnect wires and then remove wire tags.
4-31. SHORTING PLUG (4, figure 4-18)
Test. With an ohmmeter (Rx1 scale) check
for continuity between pins A and B. If
meter indicates an open circuit, replace
Replacement. To remove shorting plug (4)
remove screw (1) which attaches the chain,
then unscrew the shorting plug from the
4-32. PANEL MOUNTED SWITCHES S22, S21, S106
and S20 (20, 26, 31, and 36, figure 4-18).
Check switches for continuity in one
direction and an open circuit when
operated in the other direction.
At rear of panel, remove one lead
With an ohmmeter (Rx1 scale), test
switch as indicated in step (1). If
switch fails to meet this test, replace
Replacement S22, S21, S106 and S20.
Replace defective switches (20, 26, 31, and
36, figure 4-18) as follows:
At rear of panel, tag leads and
remove wires to switch.
hardware and guards (21 and
37) and remove switch.
Install switches S21 and S106
(26 and 31) onto front panel
with mounting hardware.
Attach wires to S21 and S106
Install switches S22 and S20
(20 and 36)