View Full Version : TR4/4A Dis-assembly of fresh air duct

Tim Tucker
07-01-2013, 07:24 PM
Hi all!
I'm in the middle of a dash project. Looking for anyone that can offer advice removing the 'valve'(AP3) and 'spindle'(AP4) from the fresh air duct. Below is a copy of plate AP from the TR4 parts manual. Any help is greatly appreciated. The only option I see is to use a long punch and drive the spindle from the air control 'valve'. Thanks for any help. Tim.




07-01-2013, 08:05 PM
Never done it, looks like a delicate operation where something could easily get broken, why do you need to take apart? any alternative to complete disassembly?

Tim Tucker
07-01-2013, 08:49 PM
I do agree delicate! I'd like to powder coat the metal duct. That's really the only gain is a clean PC'd duct. Tim.

07-01-2013, 09:58 PM
I don't have an answer for you but since you have the ducts out here is a suggestion to allow air flow to the foot well area. I drilled a hole on the bottom of each duct and mounted a aircraft "fish eye" air vent. I now can direct cooling air to the leg/foot area.

Tony P
07-02-2013, 12:15 AM
Hey Bob, I would like to see a picture of your fish eye vent. And maybe some ideas about how you put it in.


07-02-2013, 01:36 PM
I looked at a possible disassembly of this unit and decided that it was not to be. So I did a reasonable good clean up and painted it then reglued the felt pieces back on ( they are important to be able to make the seal to close off the units). But I did as Bob said and installed the extra vents. They are called ball and socket air vents as used in airplanes. I got mine from Aircraft Spruce and Specialty Co. in Corona, CA. This was back in 2009 and they were $18.00 a piece then. Phone number was 1-877 4 spruce or 477-7823. It only requires a single hole for installation and they work great. you will not regret having installed these units.

Tim Tucker
07-02-2013, 05:37 PM
Many thanks for the feedback. Those 'ball-and-socket' or 'fish eye' vents are a great idea. May have to to get in on that.

I took mine apart today. Cleaned, media blasted the duct and flap, powder coated those two parts satin black, re-used the thick felt pieces, and everything else for that matter. Went pretty smooth. They still open and close, and no broken parts...:) Here are some pics... Now I move on to the center dash plinth...:)


07-02-2013, 11:18 PM
@Charlyf, I'm glad you like the mod. I submitted an article which was published in the magazine of the VTR, TVT, with pictures. Yes, Aircraft Spruce is the source for the air vents.
@Tonyp, the installation can be done without removing the duct from the car. Just hang yourself upside down under the dash (the ability to do this is a pre requisite to work on TRs) and using a hole saw on a power drill cut the required hole, drill a few screw holes and install the vents.

07-02-2013, 11:20 PM
Tony P, if you're at Triumphest/VTR in San Rafael this October look for me and I'll show the mod to you.