TR6 TR6 Heater box /air distrbution cable help

[ichthos]

The air distribution cable to my heater box has never been hooked up before. My question is when the cable is pushed in, where should the door be in relation to the heater box? Where should it be when the knob is pulled out all the way? Any suggestions/help would greatly be appreciated.
Kevin

 

[DougF]

When the knob is pushed in, the door is shut. As I remember it, the opens inward.
If you have TRF Green Spare Parts Catalog, there is a fairly good diagram of the assembly.

 

[ichthos]

I still do not understand. When the knob is pushed in, is the door pointing up at about a 45 degree angle (compared to the ground) so that the vent hose holes are visible? When the knob is pulled out, does that mean the door is parallel to the ground?

Kevin

 

[hondo402000]

push the knob in, the heater door,Flap, should be open so you have floor heat, flap touching or close to the transmission cover,

pull the knob out and door should be closed so you have defrost

hope this helps

 

[2wrench]

Excuse me for jumping in, here.

Does this mean no matter where the heater cable knob
is set, that we have heat coming into the car from
either the floor area or the defrost?

Previous owner of my TR6 (my sister), always beefed
and complained about heat (on a hot day, of course,) was
always coming into the car. She disconnected the
heater core entirely.

Convinced that with proper installation and use the problem
could be remedied, I reinstalled the heater core, etc.

Is there a way to stop heat from entering this car if it
is not wanted?

 

[swift6]

The air distribution knob doesn't control the heat coming into the car via the heater box, just where the airflow is directed. The heater knob that controls the water-valve on the backside of the engine controls the hot coolant entering the heater-box and therefore heat.

Does your carpet have any insulation under it? If not, that could be why your cars PO complained about cockpit heat.

The early TR6's had a flap in front of the windscreen that could be closed to stop outside air from entering the ventilation system completely. Sometime in 1972 they went to a plastic grill instead of the closable flap.

 

[TR674]

2wrench
I thought the heater was on too during summer. I discovered that the transmission tunnel gets fairly hot, and being cardboard, a lot of the heat is transferred to the interior. With the fan on you would swear the heat is coming from the heater. Not so. I'm going to insulated the underside of my cardboard tranny cover and fibreglass it, this should solve the heat problem during summer.
Regards
Craig

 

[Brosky]

Look at the pictures here and you'll see the foam that seals the bottom door on the heater case, so that when the door is closed (cable pushed in) the heat stays inside.

https://www.74tr6.com/heater.htm

But remember, if you do not open the heater valve by pulling the cable, the hot water stays in the block and what is in the core is the ambient temperature of the cockpit.