(2) Remove the screws (6, fig. 4-55)
securing the wires to the switch to be removed and lift
the wires from switch.
(3) Remove the two screws (12) securing
the switch to the engine control panel and remove the
switch.
(4) Reverse steps (l)to (3) to install new
switch.
4-50. Gage Panel Switches
The power compartment dome light switch (18,
fig. 4-57) and the two vessel alarm bell cut-out switches
(16 and 17) are removed, inspected, cleaned, and
installed in the same manner as all other switches.
4-51. Alarm Bell
a. Removal and Disassembly.
(1) Disconnect the three identification
lights on the bell cover at the connector (fig. 4-56).
(2) Remove the nine machine screws (2,
fig. 4-58) and lockwashers securing the bell cover (3) to
the rear housing (1) and remove the cover.
(3) Refer to figure 4-59 1 or figure 4-59 2
and disassemble the alarm bell.
b. Assembly and Installation.
Reverse a.
above to assemble and install the alarm bell.
4-52. Blackout and Service Stop and Taillights
a. Removal
(1) To remove either blackout or service
1.
Screw
9.
Adjusting bracket
stop and taillights (11) and 15, fig. 4-60) uncouple wire
2.
Strap
10.
Nut
connectors (14) and tag leads for identification, then
3.
Nut
11.
Wiring harness
remove capscrews (12) and lockwashers (13) to free
4.
IE washer
12.
Brush
blackout units, or screws and nuts attaching service
5.
13.
Screw
units. Reverse this procedure to install.
6.
Capscrew
14.
Lead
(2) To replace lamps, loosen screws,
7.
Lockwasher
15.
Holder
remove door (1, fig. 4-61) and remove defective lamp
8.
Capscrew
by pressing in while turning lamp to left, to disengage
Figure 4-52. Generator brush installation
lamp base from socket, then remove lamp. Install new
lamp by reversing removal procedure above.
NOTE
b.
Installation.
Procedure above is typical for both service and
blackout taillights.
(1) Position the two shock mounts (20)
b. Disassembly. Refer to figures 4-61 and 4-
and starter control (9) on the bracket (18) and secure
62 and disassemble the light.
with the two nuts (21) and lockwashers (22).
c. Repair. Replace all damaged parts.
(2) Connect the wires to the terminals,
d. Reassembly.
Reverse disassembly
refer to figure 4-56.
procedures.
4-49.
Control Panel Switches
4-53.
Clearance Lights
a. General. The gage line heater switches(16
and 17, fig. 4-55), the conversion heater switch (14),
screws (11), door (1), lens (2) and press and turn lamp
the space heater switch (15), the gasoline engine start
left to release. Reverse these steps to complete
and stop switches (11 and 13), the automatic manual
operation. To replace entire light assembly proceed as
control switch (10), the circuit breaker (4), and the
follows:
tractor-trailer switch (5) are all removed, cleaned,
b. Remove door and lens as given above.
inspected and installed in the same manner. Disconnect
Inside trailer body, at light to be replaced, disconnect
the battery ground lead (2, fig. 4-54) before working on
electrical connector by pressing two halves together
any of these switches.
b. Replacement.
while twisting them.
(1) Tag the wire leads on the switch to be
removed, refer to the wiring diagram, figure 4-56.
4-59
