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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 03-04-2007, 08:14 PM   #1 (permalink)
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master & slave

I got the slave cylinder back in place after moving it to ispec and lube the fork & pilot bearing now I think the master or slave is trashed.
I could'nt shift to reverse and did'nt try a forward gear.
Tried to bleed the slave and after a few attempts the pedal would'nt return so I think my master is shot.
I have read in some earlier post when changing one to go ahead and change the other. I don't understand what has happened.
I pulled the slave out to get to the forks and pilot and drew down the fluid some when I could'nt get the slave back in trying to keep it compressed and putting the new little plastic keeper in place.
Now i have this pedal problem and it is worse as it doesn't engage the clutch. Any suggestions?
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Old 03-05-2007, 07:26 PM   #2 (permalink)
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Re: master & slave

Check incab for worn clutch assy parts, also is your firewall cracked and flexing.
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Old 03-05-2007, 10:12 PM   #3 (permalink)
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Re: master & slave

I will have to do mine since mine is leaking////Where can I find some instructions on changing them??? [img]/ubbthreads/images/graemlins/smokin.gif[/img]
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Old 03-07-2007, 06:35 AM   #4 (permalink)
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Re: master & slave

You guys make changing the slave and or master too complicated. I just changed my slave and master a couple of months ago and had the job done in less than a hour from start to out the door.

When installing a new slave

1st open the bleeder on the slave and push the rod in when you install it with the line from the master on.

2nd let it set until fluid starts to drip out of the bleeder.

3rd push the clutch fork towards the front of the engine and close the bleeder.

4th let the fork and rod push out to normal, do this 3 or 4 times until you get a solid stream of fluid, by all means keep the master full

You will have a spongy pedal at first after you finish but within a few pumps of the pedal while driving the pedal will stiffen up.

I have done this on several trucks and can bleed the slave in about 10 min.

If you replaced the slave and had an old master still on you might have blown the master.

Jim
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