3-47.1 TIMER REPAIR (MODELS H-9518-1, H-9518-2, H-9518-3) -continued.
Using a soft-bristled brush, clean electric contacts, cover, mounting hardware, and latches.
Using a dry cloth, clean box.
Inspect terminal assembly and stager for breaks, overheating, and terminal damage.
Inspect control unit for physical damage.
Inspect all tube fittings for stripped or damaged threads.
Inspect timer box and cover for damage.
Inspect wires for burned insulation, bare spots and other defects.
Replace lockwashers, locknuts and damaged or unserviceable components.
Install circuit breaker (23) from terminal assembly (8) by pushing it in place.
Install terminal assembly (8) on backpanel (15) and secure with screws (21) and lockwashers (22).
Install control unit (18) on backpanel (15) and secure with screws (19) and lockwashers (20).
Connect the wires from the control unit (18) to the terminal assembly (8) following tags.
Change 1 3-272.3