Do not clean in gasoline or other
compressed air (100 psi max)
through filter element opposite
Washing with Water. Soak 15
minutes in water with mild
deter- gent. Rinse until clean.
Air dry. Do not use compressed
Replace defective gaskets or O-rings.
Replace primary filter element (4),
gasket (2), secure with wing nut (3),
and secure cover (1) with cover
Reset service indicator to green.
Replacement of Air Cleaner Element. Refer
to paragraph b, above.
Replacement of Indicator. Remove the
indicator (28, figure 4-23) by unscrewing it
from the air cleaner assembly. Screw a new
indicator in place.
Replacement of Air Cleaner.
Be sure hose clamps (24) are in their
proper location as shown in figure 4-
Attach air cleaner (29) to mounting
brackets (18 and 19) with six screws
(15), lockwashers (17) and nuts (16).
Attach hoses to air cleaner and
tighten hose clamps (24).
4-43. AIR SHUT-OFF VALVE. (27, figure 4-23.)
Check all lead wires for secure
Check springs, shafts, and mountings
(stretched springs, bent shafts), and
freedom from binding.
Tag and disconnect lead wires to
Valve is normally open. Trip valve by
applying 24V DC across leads: valve
Remove 24V DC; valve should open.
Tag and disconnect lead wires.
Loosen clamps (24) at either end of
Remove mounting screws (30) and
nuts (31) which hold valve to bracket
(22 and 23).
Remove valve (27) by sliding adapter
hose (26) and then duct hose (25)
away from valve.
Install valve (27) by sliding one end
into adapter hose (26), other into duct
Secure to bracket (22 and 23) using
mounting screws (30) and nuts (31).
Tighten clamps (24) at either end of
Connect lead wires and remove wire
4-44. DUCTS AND HOSES.
Loosen clamps (24) holding adapter
Check inside hose for accumulation of