Figure 3-41. Cylinder Head Assembly Bolt Tightening Pattern, Model 609-A.

Figure 3-40. Cylinder Head Assembly Removal, Model 609-A.

3.8.20 Cylinder Head Assembly Replacement, Models 609-C and US636HCCD-1.

TM-10-4320-344-24 Pump Assembly Water 600 GPM Model 609-A (NSN 4320-01-184-7494) Model 609-C (NSN 4320-01-261-6470) Model US636HCCD-1 Manual
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TM 10-4320-344-24 f . Install two lifting eyes (4), flat washers (3), and nuts (2). Hand-tighten n u t s ( 2 ). Figure 3-41. Cylinder Head Assembly Bolt Tightening Pattern, Model 609-A. g . Tighten nuts in sequence shown in Figure 3-41. Torque nuts 1-4, 7-10, 13-16, and 19-20 to 75 ft-lbs (102 N•m), then to 125 ft-lbs (169 N•m), then to a final 175 ft-lbs (237 N•m). Torque nuts 5-6, 11-12, and 17-18 to 75 ft-lbs (102 N•m), then to 125 ft-lbs (169 N•m), then to a final 147 ft-lbs (199 N•m). h. Install 12 push-rods (1). i . Refer to paragraph 2.21.49 and perform cold valve adjustment. j . Refer to TM 10-4320-344-10 and start engine. Operate engine for one hour. The cylinder head nuts must be retorqued and the valves readjusted after 1 hour operation. Failure to observe this caution could result in damage to equipment. k. Refer to l . Refer to m. Refer to TM 10-4320-344-10 and stop engine. step c above and torque cylinder head nuts. paragraph 2.21.49 and perform warm valve adjustment. 3-93

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