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'88 Ford L8000 Clutch Issues
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D&M Farms
Posted 2/13/2015 18:47 (#4383847)
Subject: '88 Ford L8000 Clutch Issues


Stoddard Co. SEMO		My L8000 has the 7.8 ford diesel with a spicer 5 speed transmission. I have a slight rear main leak and the clutch feels as if its slipping but I've never smelled it. The clutch is mechanical linkage and I've never tried adjusting it. I have some pics of the linkage and transmission numbers. Maybe someone can tell me about what type clutch I may need if adjustment doesn't work. The rear main seal leak doesn't seem near severe enough to cause the clutch to get wet but I have been wrong before.



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V Rocker
Posted 2/13/2015 19:57 (#4383994 - in reply to #4383847)
Subject: RE: '88 Ford L8000 Clutch Issues


Soil		A lot of heavy duty trucks have to have the clutch adjusted at the pressure plate . On the few that I have done, there is a 12 point bolt that faces the rear of the truck that has a lock ring around it that has to be pushed in then turn the bolt , by the way the clutch pedal has to be held down while you turn the bolt .
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farminbroke
Posted 2/13/2015 20:05 (#4384015 - in reply to #4383847)
Subject: RE: '88 Ford L8000 Clutch Issues


How much free play is there in the clutch pedal? You adjust it like VR said through the inspection hole at the bottom of the bell housing
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Offroadnt
Posted 2/13/2015 20:28 (#4384060 - in reply to #4383847)
Subject: RE: '88 Ford L8000 Clutch Issues


Southern Alberta Canada		It's probably a pull type clutch, freeplay decreases as the clutch wears. No freeplay the clutch will slip, hopefully you can salvage it by adjusting it. Those rings can be a bugger to loosen for adjustment, I've used an air hammer to get them to move but I have manged to adjust all the clutches I've tried.
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D&M Farms
Posted 2/13/2015 21:20 (#4384170 - in reply to #4384060)
Subject: RE: '88 Ford L8000 Clutch Issues


Stoddard Co. SEMO		This transmission doesn't shift like a semi truck or road ranger style. Its necessary to clutch it at every gear change, just like a pick up. That being said, does it still adjust like a semi truck or can the clutch pedal linkage just be adjusted?
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Offroadnt
Posted 2/14/2015 06:55 (#4384591 - in reply to #4384170)
Subject: RE: '88 Ford L8000 Clutch Issues


Southern Alberta Canada		So it's a synchronized transmission then, could be either type clutch, you could see by looking up into the clutch housing. If there is no access hole in the bottom I'm pretty sure it'll be the old push type.
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D&M Farms
Posted 2/14/2015 09:37 (#4384960 - in reply to #4384591)
Subject: RE: '88 Ford L8000 Clutch Issues


Stoddard Co. SEMO
Offroadnt - 2/14/2015 06:55

So it's a synchronized transmission then, could be either type clutch, you could see by looking up into the clutch housing. If there is no access hole in the bottom I'm pretty sure it'll be the old push type.


There is a 3"x3" inspection hole underneath, with a grease fitting attached to a line, which I'm assuming is going to the throw out bearing. I haven't looked up into the inspection hole yet. When I do I'll report back, and tell you what I see or maybe get a pic.
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tim4870
Posted 2/13/2015 22:26 (#4384312 - in reply to #4383847)
Subject: RE: '88 Ford L8000 Clutch Issues


Southern MN		The model number looks like ES65-5A. Here is the service manual for that transmission: http://www.tremec.com/anexos/ES65-5%20CM50%20Service%20Manual.pdf

Unfortunately, the clutch that you asked about is not part of the transmission, so this service manual will not help you with your issue.

Send me an email, I'll email you pictures of pages out of my 1992 Ford L-Series service manual that descries how to adjust the clutch. The file is too large to attach to this forum.
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D&M Farms
Posted 2/14/2015 13:31 (#4385420 - in reply to #4384312)
Subject: RE: '88 Ford L8000 Clutch Issues


Stoddard Co. SEMO		Here are some pics of the clutch and throw out bearing.



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Attachments image.jpg (133KB - 509 downloads)
Attachments image.jpg (152KB - 424 downloads)
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D&M Farms
Posted 2/14/2015 16:28 (#4385746 - in reply to #4385420)
Subject: RE: '88 Ford L8000 Clutch Issues


Stoddard Co. SEMO		To adjust the clutch I guess I need to remove the 2 bolts and rotate the clutch to the next slot for the bracket to lay in and lock it in place? Which direction should I rotate it?
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Offroadnt
Posted 2/14/2015 21:47 (#4386509 - in reply to #4385746)
Subject: RE: '88 Ford L8000 Clutch Issues


Southern Alberta Canada		Goes clockwise, probably have to go several slots till you get 1 1/2" to 2" free travel on the clutch pedal. Need to either block or have someone hold the pedal down while your adjusting it.
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D&M Farms
Posted 2/15/2015 07:49 (#4386918 - in reply to #4386509)
Subject: RE: '88 Ford L8000 Clutch Issues


Stoddard Co. SEMO		Is there anything recommended for cleaning the clutch area, such as using a pressure washer up through the inspection hole? Perhaps lot of carb or brake cleaner?
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