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Be aware that schoo's truck has 4WD, which uses a different equalizer bar, clutch adjustment rod, frame and engine side pivots than 2WD
The thing that bothers me is, you bought the used parts from Bob's F100, who has a lousy reputation for selling wrong, rusty and/or worn out used parts to FTE members.
When you bought the parts from Bob, did he ask you for your VIN .. since there are two different frame & engine side pivots, two different equalizer bars for 1964 F100/250 2WD's?
That you have not yet checked the z-bar tells me that you have not been as thorough as you might think. Check everything again. Look at each individual component and you will find it. Make no assumptions.
Quite right as always Mr. McCraney. I will check each part, and I appreciate you confidence in my ability to find the problem. Several times in this process I have had "Ah Ha!" moments that soon proved chimera. I am sure it will be most satisfying when I have finally solved this, but just now it is frustrating.
Make no assumptions. Those are words to live by in my line of work, in my life.
Be aware that schoo's truck has 4WD, which uses a different equalizer bar, clutch adjustment rod, frame and engine side pivots than 2WD
The thing that bothers me is, you bought the used parts from Bob's F100, who has a lousy reputation for selling wrong, rusty and/or worn out used parts to FTE members.
When you bought the parts from Bob, did he ask you for your VIN .. since there are two different frame & engine side pivots, two different equalizer bars for 1964 F100/250 2WD's?
I believe I sent him pictures and the parts fit correctly and they have worked for several years. When the old part failed, the problem was obvious. The Zbar was loose and hanging from the clutch release rod.
In this case the zbar is in place and rotating properly and not shifting as the pedal is depressed. I will remove it and check it further, but it seems very unlikely to account for the excess 1" of travel that is now needed.
It would be a handy culprit. And if I, like you, could not see the truck, I might well be sure that was the problem. This is one time I will be very happy to be wrong.
Take a close look at the Z bar.......where the levers are welded to the round tube. I have seen them break loose.
Also post pics of the pressure plate if you can.
This photo is from 09 when I replaced the bracket holding the z bar.
note the bracket on the left had previously broken and been jury rigged with a bolt and a lug nut with the corners filed down. The bracket on the right shows the stump or the original pressed in stud that had snapped off.
Is this the replacement z bar? It could be a glob of grease, but it looks like it is cracked in such a way that would cause excess travel to be required. Have you removed it and cleaned it for inspection?
I don't think either z bar is correct. It looks a lot like the one for my '61. I had to find one for mine a few years ago and I think it was a 1 or 2 year only part. I guess if it works it is fine. Maybe ND can confirm.
C3TZ-7528-B .. Clutch Equalizer Bar - 7.00" long / Obsolete ~ 2 available NOS
1963 F100/250 2WD / 1964 F100/250 2WD before serial number 460,001.
----------------------------------------------------------------------------------- C4TZ-7528-C .. Clutch Equalizer Bar - 7.90" long / Obsolete ~ 3 available NOS
That you have not yet checked the z-bar tells me that you have not been as thorough as you might think. Check everything again. Look at each individual component and you will find it. Make no assumptions.
So, mystery solved. I am sitting down to half a piece of humble pie. The zbar was badly damaged, but in a place that was impossible to see until I removed it. It took me until after work to day to get to this and the cotter pin at the lower end of the vertical clutch release rod is not easy to get a hold of. The damage was on the frame side of the zbar, and at the bottom. This first picture shows what could be seen while it was still in the truck
This picture show what I could not see until I removed it.
I have taken the zbar to a local machinist for repair.
How does the z bar bracket mount onto the bell housing? I'm dealing with a clutch issue myself right now, and one problem I'm having is getting the correct mounting angles for the z bar. The PO fabricated a bracket that bolted onto the bell housing which then the z bar was mounted on. This system failed, as to why I'm trying to get it back to the proper fit.
I'd really appreciate any help, I haven't been able to find anything.
On a Y-block, it mounts to the engine block, not the bellhousing. There are a pair of threaded holes on the bellhousing flange, behind the oil pump.
Actually I am pretty sure the bracket does bolt to the bell housing. I looked at it today on my truck as I was reassembling everything but the Z-Bar and I looked at the diagram that ND posted.
But the main point is that the Z-Bar is supported on the two brackets and there are studs pressed into the brackets. These have almost spherical heads and they are fitted with bronze bushings, two per end. They allow the Z-Bar to rotate on its axis.
I don't know of anyone who manufactures replacements for these. I got my junkyard/salvaged parts from Bob's F100 Parts in California. Others have said they are not reliable, but when I could not find the parts elsewhere, they had a set.
08-26-2014, 05:16 PM
