4-43. INTAKE MANIFOLD A S SEMBLY.a. Test On Equipment (see figure 4-36). On ASK equippedgenerators, remove right panel assembly (para. 5-6). Remove hosebetween intake manifold and air cleaner to permit visual inspectionof heater coils (18). Place master switch (see figure 2-3) in thePREHEAT position. Good coils should start to heat within oneminute. Release switch as soon as coil begins to heat. Replace abed heater.b. Inspect. Inspect heater for physical damage.Check that electrical connections to heater are cleanTM 5-6115-584-12NAVIFAC P-8-622-12TO-35C2-3-456-1TM-05682C-12and tight. While engine is operating, check for leaksespecially at the gasket (15; figure 4-36) betweenmanifold and cylinder head and the gasket (25) betweenthe manifold heater adapter (24) and the manifold.Drop oil from an oil can or hold piece of thin paperon point suspected of leaking. If leak exists, oil willbe sucked in or paper will be sucked against leakingarea.c. Remove. Tag and disconnect leads (17 and 19)from heaters (18) and remove heaters (18). Removelead (19) by removing screw (20), washers (21 and22) and spacer (23). Remove adapter (24) and gasket1. Screw (4)2. Lockwasher (4)3. Rocker arm cover4. Gasket5. Cylinder headTS 6115-584-12/4-38Figure 4-38. Rocker Arm CoversChange 74-49
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