3-30. SHUTTER ASSEMBLY
Discard gasket. Do not remove drain cock (13) unless
replacement is necessary.
a. Check shutter assembly for bent or dented louvers
(6) Remove retainer (11) to remove strainer (12).
and for insecure mounting.
(7) Clean strainer (12), housings (3 and 9), and
b. Check that control linkage is securely mounted and
attaching hardware with dry cleaning solvent (Federal
Specification P-D-680) and dry with filtered compressed
c. Inspect thermostat housing for cracks, leaks, exces-
sive corrosion or other damage.
(8) Install strainer (12) and secure with retainer
(11) finger tight.
(9) Install replacement gasket (10) and housing (9)
and secure with sealing washer (8) and cup nut (7). Tighten
nut securely to prevent leaks.
(1) Check radiator core air passages for obstruc-
tions to air flow and bent cooling tins.
(10) Install replacement filter element (5) into
(2) Check for leaks, loose connections, insecure
mounting and excessive corrosion.
(11) Install replacement gasket (4) and housing (3)
and washer (2) and center screw (1). Torque screw to 17
2 lb- ft.
Scalding can result from steam in the coolant
(12) Close drain cocks on strainer and filter hous-
system escaping when the radiator cap is
removed. Always allow coolant to cool and
remove the radiator cap slowly to permit any
START AID ASSEMBLY.
pressure to escape.
(3) Open the radiator cap access door, remove the
radiator cap and check the coolant level. Check for accumu-
lations of rust or scale in the radiator.
Start aid assembly is located on day tank assem-
(4) Check radiator hoses and coolant lines for
Inspect start aid assembly for damage, insecure mount-
ing, and loose fittings.
(1) To add coolant to the radiator, proceed as fol-
b. Service. Replace an unserviceable or empty ether
tank as follows:
(a) Open the radiator cap access door.
(1) Open ether tank bracket.
(b) Remove the radiator cap.
(2) Unscrew ether tank from the solenoid valve
(3) Inspect threads of replacement tank and
Do not add coolant to an overheated engine
unless it is running.
(4) Screw replacement tank onto solenoid valve
(c) Add coolant, as specified on the coolant
specification tag, to the radiator. Leave the coolant level
approximately 2 inches below the overflow pipe to allow for
(5) Close ether tank bracket.
3-28. FUEL TRANSFER PUMPS.
(2) To flush the radiator, proceed as follows:
Inspect fuel transfer pumps for damage, leaks, insecure
(a) Remove the radiator cap to facilitate
mountings and loose electrical and fuel connections.
(b) Open the coolant drain cock (17, figure
at the bottom
of the shutter control
Inspect the radiator grille for dirt, cracks, dents, inse-
ing and allow the coolant to drain into a suitable container.
cure mounting, corrosion and other damage.