Section IV. OPERATOR MAINTENANCE
(4) If it is not necessary to clean the filter
34. General
element at this time, install the bowl
The instructions in this section are published
assembly on the body.
for the information and guidance of the oper-
b. Element Servicing.
ator to maintain the air compressor.
(1) Perform a(1) and (2) above.
(2) Unscrew wing bolt and remove re-
Service the primary fuel filter, as illustrated
tainer assembly (5) and element (6).
in figure 11, every 50 hours.
(3) Wash the element in hot or cold water,
using a mild detergent. If desired,
element may be cleaned in a nonflam-
a. Bleed and prime the fuel system before
mable cleaning solution. Allow element
starting the engine for the first time, after the
to dry thoroughly.
engine has run out of fuel, or after servicing
Caution: Do not oil the element.
any part of the fuel system. Refer to figure 12.
(4) Install the element and the retainer
b. Loosen the bleed screw located above the
assembly securely.
secondary fuel filter.
(5) Perform a(3) above.
c. Operate the hand pump until a solid stream
c. Element Replacement. Discard the filter
of fuel, without air bubbles, flows from around
element and replace with a new one if-
the bleed plug.
(1) Visual inspection indicates a rupture
d. Retighten the bleed plug.
or thin area in the filter media.
(2) The indicator warning signal for that
Service the ether primer valve as illustrated
filter continuously shows red after
in figure 13.
cleaning the filter element.
a. Fan Belt Service. Adjust fan belts as illus-
a. Draining.
trated in figure 14.
(1) Remove radiator drain cap from drain
b. Storage Batteries Service. Service the stor-
pipe, lower, right front of radiator.
age batteries as illustrated in figure 15.
(2) Open drain cock on right rear side of
block above starter.
(3) Open drain cock at bottom of engine
a. Duet Removal.
oil cooler.
(1) Release latches to remove bowl assem-
Note. Drain outlets should be left open
bly (1, fig. 16).
until cooling system is to be tilled.
(2) Unscrew wingnut (2) and remove
b. Filling.
louver plate (3). Empty the bowl of
(1) Install radiator drain cap and close
dirt and wipe or blow clean.
drain cocks on engine oil cooler and
(3) Install the louver plate and the wing-
block.
nut on the bowl, making sure that the
louver plate is squarely seated on the
(2) Fill cooling system with proper cool-
bead in the bowl.
ant, refer to table 1.
AGO 8166A
