TM 55-4920-401-13&P
switches and insert shafts through holes in probe
controller deck.
b. Install seal nuts (9) and knobs (7) on switch
shafts.
c. Resolder wires, removed in step (5) of para-
graph 4-10d, to board.
d. Resolder chromel and alumel wires to T/C
INPUT siwtch using solder (item 7, table 1-16) and
flux (item 8).
e. Attach harness connector P12 (fig. FO-8) to
board using two screws (1).
f. Attach harness connector P13 to board using
two screws (l).
g. Install two screws (11) that attach connector
P6 to board
4-15. Installation of Resistance and Insulation
Check Ward.
NOTE
Perform the accuracy ckecks of para-
graphs 4-6f, g, and h after replacing
r e s i s t a n c e a n d i n s u l a t i o n c h e ck
board.
a. Place non-turn washers (15, fig. FO-8) over
shafts of INSULATION CHECK and RESISTANCE
& A/C INDICATOR CHECK switches and insert
shafts through holes in probe controller deck.
b. Install seal nuts (14) and knobs (12) on switch
shafts.
c. Attach harness connector P7 to board with
two screws (1).
d. Install two screws (23, fig. 4-38) that hold
against connector J6.
4-16. Installation of CAL ADJ Potentiometers.
a. Inspect condition of pot hook gasket and o-
ring (fig. 4-27). If worn or deteriorated, replace old
pot hook with new pot hook.
b. Place gasket on bushing and insert bushing in
trimmer deck.
Figure 4-27. CAL ADJ Potentiometer Installation Detail
4-37
