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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 05-16-2007, 09:15 PM   #1 (permalink)
Erk
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Clutch Adjustment

I have a 1994 F250 7.3IDI w/ Turbo and 5sp. My clutch has about 10 inches of travel and my slip point is pretty much at the floor board. I was wondering what is the best way to go about adjusting the clutch on this type of trans/truck. Any advice/suggestions are appreciated. Thanks

-Eric
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Old 05-16-2007, 10:57 PM   #2 (permalink)
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Re: Clutch Adjustment

Check your firewall for cracks around the clutch master cylinder. Also check for worn bushings at the top of the clutch pedal.

Being a closed hydraulic system there is no clutch adjustment.
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Old 05-16-2007, 11:46 PM   #3 (permalink)
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Re: Clutch Adjustment

So there's no way i can adjust it i take it? I do not know much when it comes to clutches/transmissions. Thanks again.

-Eric
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Old 05-17-2007, 09:35 AM   #4 (permalink)
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Re: Clutch Adjustment

Well there's no adjustment per se, there's something broken that needs fixed.
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Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.

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Old 05-19-2007, 08:29 AM   #5 (permalink)
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Re: Clutch Adjustment

This is a good question since I just had the same problem. I removed the slave cyl, fork and lubed everything. The fork needed lube on both pivot points and the throwout bearing contact points. Also was able to get some lube on the tranny input shaft where the throwout bearing slides. After getting it all back together my clutch was much easier to operate and now the clutch engages a little further from the floorboard.

Upon further investigation it appears that I have to much wear in the clutch peddle (cross over) bushings and I'm going to replace those and all should be good.

My truck is like yours except it's a 1993. It's got 114K original miles on it.
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Old 05-19-2007, 09:39 PM   #6 (permalink)
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Re: Clutch Adjustment

Ford Stuff

Firewall Flex

When Ford introduced the hydraulic clutch master cylinder in 1984 in their pickups, a rash of clutch release problems starting showing up. The area where the master cylinder is bolted to the firewall is prone to flexing when the clutch is depressed. This can get so severe that it will crack the firewall. If the firewall moves when the clutch is depressed, the volume of fluid to the slave cylinder is decreased which reduces the travel of the throw-out bearing, which will not allow the clutch to release completely. The only repair for this condition is to reinforce the firewall area. A brace for this is available from Ford dealerships. This is a sheet metal part which must be screwed in place. Another style brace is available from many clutch shops. It is made of steel plate and does not require any drilling. It simply mounts behind the master cylinder.

Pedal to Master Cylinder Link

A poor release on a Ford F series pickup with a hydraulic clutch can often be caused by a small link connected to the end of the clutch and brake pedal pivot shaft. This is the link that pushes in the master cylinder rod. The link is simply pressed onto the end of the knurled pedal shaft. Over time, this link will work loose on the knurls and will fail to push the rod into the master cylinder far enough to release the clutch. To check for this condition, remove the pushrod locking clip and slip the rod off the link. Raise the clutch pedal to the top of its travel and try to replace the rod over the link pin. If the pedal must be lowered in order to replace the rod, the link has slipped and must be replaced. Do not try to simply tighten the mounting nut. It will not work. The link must be replaced.

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Old 05-20-2007, 03:27 PM   #7 (permalink)
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Re: Clutch Adjustment

Good post! Just one correction. I think that 1984 date is a little off. My 1983 parts truck has a hydraulic clutch in it....
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Old 05-20-2007, 07:54 PM   #8 (permalink)
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Re: Clutch Adjustment

Check all the pivot points on the clutch pedal arms, I'm sure some are worn out.
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