Clutch
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Clutch
I have a 1990 F350 7.3 dually that I haul a 40 foot camper with. Lost a clutch in Las Vegas and had it fixed by a Ford dealership but after travelling to NY and back to Memphis the clutch had to be replaced by a Ford dealership under Warranty. Traveled to Vegas then to San Antonio. Upon heading home to SD the clutch started to malfunction again. Stopped in Oklahoma where a heavy duty clutch was put in. Anyone else experience such problems and any suggestions on how to figure out why this is happening?
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From: Northern IL
Clutch
What was the diagnosis of the failures? Oil soaked? overheated (burned up)? Was the flywheel resurfaced or replaced? How do you use your clutch? every shift, downshifts, from a standstill only? Has your hydraulic slave cyl. and clutch master cyl been checked? is your firewall cracked where the master cyl mounts? How heavy is your truck and payload. What is your gearing? What are the symptoms when it starts going bad?
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Clutch
The first failure was in Vegas, the truck would not start after shutting it off. We jump started it and took it to Friendly Ford where the first repair occurred. After pulling the trailer to NY, it began to slip at 2000 RPM causing a downshift to maintain contact. The clutch was replaced in Memphis, Ark. In San Antonio the slave/master cylinder fell off and was replaced, soon after that the clutch would not engage unless pushed all the way to the floor or pumped some before using. In Oklahoma we returned to an independent mechanic who had fixed our transmission the year before. He put a 1piece, to bearing and pilot bearing. The mechanic gave us the old parts and commented that the replacement parts were less than adequate and should not have been put back on. My fifth wheel weighs 18,000 lbs. I downshift on the move but I was assured that my driving did not seem to be the culprit. Gear-ratio, I would hve to find out for I do not Know. Hope this helps.
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From: Northern IL
Clutch
Did Friendlt Ford replace the clutch or did they repair the electrical problem (I assume) that caused the batteries to get run down and thus the jump start? In Memphis did they tell you what was wrong? Was the clutch burned up or oil soaked? You said the slave/master cyl fell off, and you were having disengagement probblems. Was the slave/master cyl. replaced at anytime prior to this? Check your work orders for this cuz this could have been your problem all along and the subsequent repairs would fall on the origional repair as warranty work. Sounds like the whole clutch system was not inspected properly to begin with. This whole time where was your clutch pedal engaging/disengaging
Last edited by Ggg6; Jul 28, 2003 at 02:33 PM.
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Clutch
Friendly Ford replaced the clutch. When I said jump start, I did not mean that the batteries were down but that the truck would not start because the clutch when pushed down would not engage the starter. We crossed the terminals on the starter. The clutch originally engaged about half pedal, now engages at one fourth pedal. I was not aware that the brake cylinder played that big a role. Friendly Ford's prices seemed high and the Memphis outfit implied the same. In Memphis they replaced DSC ASY-CL, BRG ASY-TRANS, HUB& BRG ASY, PLT & CVR ASY. Nowhere was the clutch cylinder mentioned. The parts I have show wear on the spines of the clutch. Caused us more down time than I thought necessary.
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Joined: May 2001
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From: Cabot, Arkansas
Clutch
The dual-mass flywheels are know to cause problems, and may be what is eating your clutches. The Luk replacement comes with a new single mass conversion flywheel, as well as a kevlar pilot bushing. Assuming your input shaft isn't beat up, the Luk should last forever in a stock horsepower application.
I don't know too much about the internal slave cylinders on the early 7.3's, so I can't comment as why/if that is what is failing.
I don't know too much about the internal slave cylinders on the early 7.3's, so I can't comment as why/if that is what is failing.
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