(a) Install thermostat.
(b) Connect electrical leads to thermostat switch (17, Figure 5-5).
(c) Refer to paragraph 3-27 and fill the radiator.
(a) Drain engine cooling system (paragraph 3-27).
(b) Tag and disconnect electrical leads to heating elements (11, Figure 5-5).
(c) Unscrew heating elements from pipe (12).
(2) Cleaning and Inspection.
(a) Clean heating elements with an approved solvent and dry thoroughly with filtered compressed air.
(b) Visually inspect heating elements for cracks, breaks, corrosion, stripped or damaged threads,
evidence of shorting, or other damage.
(a) Using an ohmmeter, check for open circuit between heater element terminal and casing. Ohm-
meter shall indicate open circuit.
(b) Check resistance across terminals. Resistance shall be 30 ± 3 ohms.
(c) Replace heater element which does not test properly.
(a) Screw heating elements onto pipe (12, Figure 5-5).
(b) Connect electrical leads to heating elements (11).
(c) Fill engine cooling system (paragraph 3-27).
Coolant Hoses and Fittings.
(1) Removal. Remove damaged coolant hoses and fittings by following the ascending numerical sequence
of index numbers assigned to Figure 5-5.
Only those hoses and fittings requiring replacement need be removed.
(2) Installation. Install coolant hoses and fittings by following the descending numerical sequence of index
numbers assigned to Figure 5-5.
ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12