42 mack fire truck

thanks beaver

only single 5 sp swish wish it had a duplex, the best way to prime the pump is to use the juinor man's helmet as a bucket lol

WAG
if tiz a mack duplex box
put main in 3rd or 4th n auxilary in Neutral n may B prime the pump wiff a bucket of water

But wadda eye kno
lol

Almost there Swish, we knows you like a challenge.

You put the main in 5th, the Auxiliary in pump drive, select the primer drive and set the compound valve into high volume. As long as you can get some water in, you'll soon have water out and be getting wet.

You need five men to operate it, coz you need that many helmets of water to prime it. Happy pumping.