70's fuel injection linkage question

Woody · 07-07-2003, 12:54 PM

Greetings all. I'm trying to fix my throttle linkage. There is a fulcrum arm at the rear drivers side that pivots on a pin on the throttle body. The bushings are shot and the linkage is hanging up. Has anyone got that pin out without removing the throttle body. There is not enough room to slide the fulcrum off as it hits the injection pump. I think the shaft is screwed into the throttle body but don't want to break it. i would prefer not to remove the throttle body if possible. Any suggestions would be appreciated.
Thanks
Kevin

Woody · 07-07-2003, 01:14 PM

I've searched the archives but no one seems to talk about the Bosch linkage. Has anyone got that shaft out.
Thanks
Kevin

Tim Walsh · Tim Walsh's Garage

I don't see how you can get that linkage off without pulling the throttle body(ies). On my 73 there are a pair of bushings that the bellcrank runs in (I think bellcrank is the right word) I'll go take a look though to see if anything presents itself.

Woody · 07-07-2003, 01:57 PM

Thanks Tim. How big of a job is it to get the throttle body off. I just wanna drive.
Thanks
Kevin

Tim Walsh · Tim Walsh's Garage

I'm not sure how easy it is to pull off with the engine in the car. I've only done it with the engine already dropped.

Tim Walsh · Tim Walsh's Garage

OK I just mocked it up on the extra engine in my garage and here's what I think MIGHT be possible. Here's what I saw had to be done.
1. remove all the linkages that are between the bellcrank and the stacks (the bellcrank to crossbar and the crossbar to MFI pumpO)
2. remove the MFI bolts (4 of them and will be a pain with the engine in the car.
3. remove the MFI belt (not sure how to do this with the engine in the car)
4. remove the MFI pump
5. remove teh MFI standoff plate.
6. remove the clip holding the crank on.
7 remove the crank.

Alot of that will be a real pain, it might be easier to drop the engine (2-4 hours of work).

Warning: I'm just an amateur and I could be VERY off.

Woody · 07-07-2003, 05:50 PM

Thanks Tim,
Would it not be easier to remove the throttle body and not effect the pump timing. Someone must have done this repair before. I was hoping to pull the engine this winter as I have spent the last three years restoring the body and hoped to drive it a bit.
Thanks for your ideas
Kevin

Woody · 07-07-2003, 06:05 PM

Hey where's Warren he usually has an answer for this vintage. Is he around? does anyone know his email?
Thanks woody

724doorE · 07-07-2003, 07:11 PM

The fuel lines go through the stacks your talking about. If you remove the nuts on the left set of stacks and tilt them outward, your may be able to get that linkage apart. Now how easily the bushing will come out is another question. Off the top of my head, I would simply use a piece of brass rod and turn a new bushing on my lathe( I know, everyone does not have a lathe). If you are in college and can get access to shop equipment, this is still a good alternative.

WHCJr72S · 07-07-2003, 08:15 PM

Kevin:
If you can remove the clip and washer, move the bell crank out far enough to remove the inside bushing and remove it. Cut a new bushing on one side so that it can be slipped over the shaft and pushed into the bell crank. Then put the other bushing on and replace the washer and clip. Also there is another bell crank on the transmission.
Bill