TM 10-3930-659-20 5-34. ENGINE THERMOSTAT AND HOUSING MAINTENANCE (Con't). 6. Install  new  gasket  (8)  and  engine  thermostat housing    cover    (10)    on    engine    thermostat housing  (7)  with  two  new  lockwashers  (2)  and screws (3). 7. Install  clamp  (6)  on  engine  thermostat  housing cover  (10)  with  new  lockwasher  (4)  and  screw (5). 8. Install upper engine radiator hose (1) on engine thermostat    housing    cover    (10)    and    tighten clamp (11). TA706913 5-97