Figure 4-8.noted below when fuel burningwinterization kit andelectric winterization kit are usedtogether. (Seesheet 2 of f i g u r e 4 - 7 . )(1)Disconnect hose(70)from elbow (13) andelbow (69).Remove nipple (69) from three way valve( 6 7 , f i g . 4 - 1 ) andinstall plug (64) into three wayvalve (67).(2)Disconnect hose( 4 2 , f i g . 4 - 7 ) from nipple(18)and elbow (31).Remove adapter (18)and replaceplug ( 4 9 , f i g . 4 - l ) .(3)Disconnect hose ( 4 7 , f i g . 4 - 1 ) from elbow(43)and elbow (50).Remove elbow (43)and replaceplug ( 1 9 , f i g . 4 - 7 ) .~. Refer to p a r a g r a p h 4 - 1 8 and replace plugs andplates removed duringinstallation.e.FiLl radiator with proper coolant in accordancewitii t a b l e 2 - 1 andcheck forleaks.4 - 2 0 . P r e v e n t i v e M a i n t e n a n c e .To insure that the electric winterization kit is readyfor operation at all times, when installed on thegeneratorset, ” it must be inspected systematicallysothat defects may be discovered and corrected beforethey result in serious damage or failure. Defectsdiscovered duringoperation of the kit shall be notedfor future correction, to be made as soonas opera-tion has ceased. Stop operation immediatelyif adeficiency is noted duringoperation which woulddamage the kit or the enditem generatorto which itis attached. Alldeficiencies and shortcomingsSHALL be recorded together with the correctiveaction on the applicable form at the earliest possibleopportunity. AirForce users shall referto the ap-plicable inspection manuals and work card setsinthe T . O . 3 5 C 2 - 3 - Series forperiodic preventivemaintenance requirements and t a b l e 4 - 3 for detailedprocedure.4 - 2 1 . T r o u b l e s h o o t i n g .T a b l e 4 - 4 provides information useful in diagnosing,isolating, and correcting unsatisfactory operation orfailure of the electric winterization kit. (See f i g u r e s1 - 2 3 , 1 - 2 6 o r 1 - 2 7 , a n d 4 - 6 . )4 - 2 2 . C o o l a n t P u m p a n d M o t o r A s s e m b l y I n s p e c t i o n ,T e s t i n g , a n d R e p l a c e m e n t .a. Inspection.Proceed as follows:(1)See f i g u r e 4 - 7 and inspect motor assemblyfor overheating andinspect coolant pump for leaks,looseconnections and loosemounting.(2) See f i g u r e 4 - 8 , remove brushcap (1) andcheck motor brushandspring (2) fordamage orexcessive wear. Brushesshould be at least 1/4inch Long.(3)See f i g u r e 4 - 8 andcheck connector (4) forbent pins or damaged threads.C h a n g e 1b. Testing. Coolant pump andmotor assembly( 4 0 , f i g . 4 - 7 ) t e s t i n g consists of an operationalverification and is performed as follows:(1) Set heat control switch to OFF position.(2) Crack the fitting on the output of thecoolant pump until a very slow leak is observed.(3) Set heater control switch to ONpositionand observe the leak justcreated in step (2)above.If the leakage rate does not increase, the pump isdefective and must be replaced.(4) Tighten the fitting loosened in step (2)above.~. Replacement.Proceed as follows:(1)See f i g u r e 4 - 8 to remove andreplace wornor damaged brushes (2)andconnector (4).(2)See f i g u r e 4 - 7 to remove and replacecoolant pump assembly (40).4 - 2 3 . T h e r m o s t a t S w i t c h I n s p e c t i o n , T e s t i n g a n dR e p l a c e m e n t .a. Inspection. fnspect the thermostat switch (9,4 - 1 8
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