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| | | | Joined: May 2005 Posts: 314 Shop Shark | | Shop Shark Joined: May 2005 Posts: 314 | On my '48 1.5 ton the heater hoses go through the heater core and then through the firewall again.
Why do they go through twice? | | | | | Joined: Mar 2005 Posts: 627 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 627 | Huh? Where would the water go if not back to the pump and radiator to be recirculated back to your heater again?
Mike Barnes
1950 GMC 1-ton pickup
| | | | | Joined: Feb 2000 Posts: 985 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 985 | With out seeing your truck my guess would be the one of the hoses goes to a control valve. But it is just a guess. Got any pictures?
Brian Moore
1949 3100 5 window Deluxe
"Today is better than yesterday, but not as good as tomorrow"
| | | | | Joined: May 2005 Posts: 314 Shop Shark | | Shop Shark Joined: May 2005 Posts: 314 | | | | | | Joined: Feb 2005 Posts: 399 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2005 Posts: 399 | The two on the left are what it should be using..Did you look under the dash, and see if there is a Still under there..You might have a mason jar full..Have no clue about the other hose..Have fun, Steve | | | | | Joined: May 2005 Posts: 314 Shop Shark | | Shop Shark Joined: May 2005 Posts: 314 | Steve, I thought the two on the LEFT under the Horn were the heater core. | | | | | Joined: Feb 2005 Posts: 399 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2005 Posts: 399 | You are right, guess I misunderstood what you were trying to do..Sorry | | | | | Joined: Sep 2003 Posts: 324 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 324 | The hose under the horn is going to a heater controal valve and then into the heater. the hose on the left is the return hose to the radiator. This truck must have a deluxe fresh air heater as they were the one that used this type of valve. | | | | | Joined: Feb 2000 Posts: 985 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 985 | This is the same set up that I have. Some of the venders carry rebuild kits for the Control valve.
If you look inside the cab and under the dash there should be a rod that goes from the control Valve to a knob at the bottom of the dash.
Brian Moore
1949 3100 5 window Deluxe
"Today is better than yesterday, but not as good as tomorrow"
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