3-8. Flexible Duct Assembly (12-InchDuct)
assembly is defective, r e p l a c e i t w i t h a s e r v i c e a b l e
one.
T h e instructions in this paragraph pertain to either
c. I n s t a l l a t i o n .
Reverse the procedure in a
one of the 12-inch flexible duct assemblies.
above.
a. Removal. Lift the 12-inch duct assembly
from between the 6-inch duct storage tubes and
unroll or unfold the 12-inch duct assembly.
T h e instructions in this paragraph pertain to either
b. Inspection.
one of the duct connecting transitions plates.
( 1 ) Check the duct assembly for broken bands
a. Removal. Unscrew the transition mounting
a n d for bent or missing duct band pins and anchor
p l a t e screws and remove the transition plate (fig. 1-2)
pins.
from the side of the heater.
(2) Check for missing or torn asbestos lining
b. Inspection. Inspect the mounting screws for
on the attaching end of the duct assembly.
bends and damaged or stripped threads; check the
(3) Inspect for worn or missing duct ex-
t r a n s i t i o n plate for breaks, cracks, and distortions;
p a n d i n g cords and for bent expanding cord hooks.
a n d check the anchor pin for bends and breaks. If
(4) Check for tears, ripped seams, and loose
the transition plate is defective, replace it with a
rivets on the attaching end of the duct assembly.
serviceable one.
(5) Inspect for any distortion holes, torn
c. Installation. Reverse the procedure in
seams, or deterioration of fibers, and if the duct
a. a b o v e .
assembly is defective, replace it with a serviceable
3-11. Fuel Tank Assembly
one.
I n s p e c t the fuel tank assembly (fig. 1-2) for secure
c. Installation. Reverse the procedure in a
mounting, dents, and signs of leaks. If the fuel tank
above.
a s s e m b l y i s u n s e r v i c e a b l e , notify t h e p r o p e r
authority to clean, replace or repair it.
The instructions in this paragraph pertain to any
3-12. Fuel Tank Fillercap
one of the 6-inch flexible duct assemblies.
a . R e m o v a l . Twist the fillercap a quarter turn
a. Removal. Unfasten the duct storage tube
c o u n t e r c l o c k w i s e and lift it up from the filler neck
s n a p spring locks (fig. 1-2) from the duct storage
of the tank. Turn the crossbar, on the fillercap
tubes, and remove the 6-inch flexible duct
retaining chain, straight up and withdraw the
assembly.
fillercup and the retaining chain from the tank.
b. Inspection.
b. Inspection. Inspect the fillercap for bends,
(1) Check for bent or missing anchor pins,
damaged gasket, broken retaining chain, and
b e n t mounting flanges, and loose or missing rivets.
broken or missing crossbar. If the filler-cap is
(1) Inspect for torn canvas and ripped seams
defective, replace it with a serviceable one.
and for deterioration of fibers.
c. Installation. Reverse the procedure in
( 3 ) Check the duct spiral reinforcing wire for
a. a b o v e .
break or crushed coils. If the 6-inch flexible duct
