Two questions:

1. The unit that is mounted to the firewall, with the hose that goes to the manifold. I assume that it is a combination flame arrestor and check valve. Do I need to do anything with it except replace the rubber hose?

2. The small air cleaner unit in the cab. Does it need to be cleaned or serviced in some other way?


195? Chevy 3800 dump truck
1973 Chevy C30 cab and chassis
1987 Suburban 3/4 ton 6.2L Diesel