TOOLS: 3/16", 1/4" flat tip screwdriver
4 oz ball peen hammer
G r e a s e (item 4, App A)
S t a k i n g screws
EQUIPMENT CONDITION: Elevation fire control quadrant on work bench
D o step 1 only if pin (1) has been removed.
Using punch and hammer, install pin (1).
Place reflector (2) on pin (1) (M13A1, M13A1C and M13B1 only). Using 1/4"
screwdriver, install lockwasher (3) and screw (4) to hold reflector (2) in place.
S t o p s (5) must be installed to clear the elevating
w o r m shaft housing (6).
Place two stops (5) in two seats (7). Using 3/16" screwdriver, install two screws (8).
Stake screws (8) (JPG).
Put grease on inside surface of elevating worm shaft housing (6) (JPG).
elevating worm shaft housing (6) together, be careful
n o t to tilt or turn worm gear housing (9). Shorter area
b e t w e e n stops (5) on worm gear housing (9) must be in
line with worm shaft open area.
Place worm gear housing (9) into elevating worm shaft housing (6).
Place cover (10) on elevating worm shaft housing (6) so that holes are lined up with
holes in worm gear housing (9).
Using 1/4" screwdriver, install three lockwashers (11) and three screws (12) to hold
Install worm shaft (para 4-14).
D o performance test (Vol I, Chap 2).