TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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?M9-2320-387-24-l I 3-79. WATER CROSSOVER MAINTENANCE This task covers: a. Removal b. Inspection c. Installation INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) hIaterials/Parts Equipment Condition l Cooling system drained (para. 3-61). l Fan temperature switch removed (para. 4-34). l Glow plug controller removed (para. 4-33). l Thermostat removed (para. 3-76). Two gaskets (Appendix G, Item 68) hlanual References ThI 9-2320-387-24P nlaintenance Level Unit 1 a. Removal 1 1. Loosen three clamps (2) and disconnect hoses (1) from water crossover (4). 2. Remove four capscrews (61, water crossover (41, and two gaskets (7) from cylinder head (81. Discard gaskets (7). 3. Clean gasket surface on water crossover (4) and cylinder head (8). -1 Inspect thermostat bypass nipple (31, surge tank hose nipple (51, and water pump hose adapter (9) for cracks or breaks. Replace if defective. I c. Installation I 1. Install two gaskets (7) and water crossover (4) on cylinder head (8) with four capscrews (6). Tighten capscrews (6) to 25-35 lb-ft (34-48 N-m). 2. Connect three hoses (1) to water crossover (4) and tighten clamps (2). 3-138