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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

hard to get into reverse

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Old May 24, 2009 | 11:33 PM
  #1  
rmalottwtes30's Avatar
rmalottwtes30
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hard to get into reverse

What causes a zf5 to have problems getting it into reverse. With it running its hard to get into gear, but with it off it goes right in.
 
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Old May 25, 2009 | 12:39 AM
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The Clutch not fully disengaging.

Hows it go into first or other gears while setting still, running?

-Enjoy
fh : )_~
 
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Old May 25, 2009 | 07:40 AM
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uncle.stosh
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I'm with Festus

It sounds like your input shaft is not coming to a complete stop. Check your clutch disengagement.

ZF's are notorious for reverse gear problems BTW, especially popping out of gear.
 
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Old May 25, 2009 | 09:47 AM
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All the others go right into gear, its just reverse...When I put it in reverse it feels like it goes but when I release the clutch it pops out.
 
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Old May 25, 2009 | 10:18 AM
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Bummer, I know you just put that trans in, but thats a rebuild!

That is the reverse problem with the ZF!

If you got any kind of warranty, nows the time to use it!

-Enjoy
fh : )_~
 
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Old May 25, 2009 | 10:32 AM
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Originally Posted by Festus Hagen
Bummer, I know you just put that trans in, but thats a rebuild!

That is the reverse problem with the ZF!

If you got any kind of warranty, nows the time to use it!

-Enjoy
fh : )_~

Dang,all else seems to be well with the transmission except reverse and the DMF... What do I need to buy to fix this?
 
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Old May 25, 2009 | 10:51 AM
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The ZF is a rear loaded transmission and therefore is a difficult rebuild. It also takes special tools to hold it all together for assembly, though with difficulty can be accomplished without.

I believe the fork and syncros are what needs to be replaced, but I do not know for certain.

Try letting the clutch out a little as you put it in reverse. (just enough to turn the shafts slowly as you try.)

-Enjoy
fh : )_~
 
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Old May 25, 2009 | 11:01 AM
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I guess I can call around some transmission shops and get quotes...I will try what you said to see if it helps. I guess until then I got to shut her down or hope it gets into reverse...The transmission is SUPPOSE to be rebuilt allready, but apparently nothing was done with reverse.
 
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Old May 25, 2009 | 01:06 PM
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Thats so annoying! Why can't people be honest.

Here not to long ago someone posted a link to the ZF.com diagnostics pdf, Unfortunately I didn't save it and now cannot find it.
It's also someplace on zf.com, I can't find it.

[edit]
Found it, ZF5 Description, Operation, Diagnostics, Parts
[/edit]

-Enjoy
fh : )_~
 
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Old May 25, 2009 | 04:29 PM
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Before you go to the trouble of pulling the transmission, here are a couple of things to check.

Check the condition of the pin and plastic bushing on the clutch pedal where the clutch master cylinder attaches. If the bushing is worn out and has been that way for awhile, the pin is probably shot as well. This creates a lot of excess free travel, which means your slave cylinder does not have as much stroke as it should. This means that the clutch is not fully disengaging, which means it is hard to get into gear.

The reason you notice it in reverse before the forward gears is because you are trying to turn the drive shaft backwards.
 
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