Tektronix 491 - Page 169

Figure -6
SECTION 8
MECHANICAL PARTS LIST
FIG. 1 FRONT
Fig. &
Q
Index Tektronix Serial/Model No.
No.
Part No. Eff
Disc ~
Description
12345
1-1
-2
-3
-4
-5
-7
-8
-9
-10
-11
-12
-13
-14
3644392-00
il&9i9&-
366-0392-00
il&&
366439240
. ..-
ilb949-oo
366-0392-00
il&i9%
366-0392-00
ilG9i9L-
36&0392-oo
----
ilb949-oo
%6.0392-00
ill-&i9i
366-0379-00
iliil &$
361W373-00
----
;1L0153-00
366-0393-00 8010100
366-0494-00 B140000
. ..-
;1;-01 53-00
------
----
“&i -0143-00
210-0940-00
210-0593-00
-15 3664393-(X) 8010100
W94-00 B140W0
----
iliol 53-00
-16 ------
----
-17 ;6;-0143-00
-18 21 O-O5B3-OO
-19 366-0215-02
-20 260-0664-00
----- .
-21 220-0413-00
B139999
1
1
1-
1
i
1
1
1
.
2
KNOB, charcoal-lNTENSITY
knob includes:
SPRING
KNOB, charcaal-FC)CUS
knob includes:
SPRING
KNOB, charcoal-SCALE ILLUM
knob includes:
SPRING
KNOB, charcoal—ASTIGMATISM
knob include=
SPRING
KNOB, charcaal-iNTENSIFIER
knob includes:
SPRING
KNOB, charcaal-POSITION (horizontal)
knob includes:
SPRING
KNOB, charcool-POSITION (vertical)
knob includes
SPRING
KNOB, charcoal-DISPERSION RANGE
knob includes:
SCREW, set, 5-40 x 0.125 inch, HSS
KNOB, red—POWER OFF-ON
knob includes:
SCREW, set, 5-40 x 0.125 inch, HSS
KNOB, charcoal—lF CENTER FREQ (fine)
KNOB, charcoal—lF CENTER FREQ (fine)
knob includes
SCREW, set, 5-40 x 0.125 inch, HSS
RESISTOR, variable
mounting hardware for each: (not included w/resistor)
SPACER, ring
WASHER, flat, 1/4 ID x % inch OD
NUT, hex., 1A-32 x 5~6 inch
KNOB, charcoal—TRIGGER (LEVEL)
KNOB, charcaal—TRIGGER (LEVEL)
knob includes:
SCREW, set, 5-40 x 0.125 inch, HSS
RESISTOR, variable
mounting hardware (not included w/resistor)
SPACER, ring
NUT, hex., 1/,-32 x $~4 inch
KNOB, charcoal, lever—TRIGGER (SLOPEJ
SWITCH, lever—TRIGGER (SLOPEl
mounting hardware: (not included w/switch)
NUT, hex., 4-40 x0.562 inch long
8-1