ZF6 locked in reverse
Thread Starter
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
ZF6 locked in reverse
It seems that perhaps I've read here that this is a fairly common problem, but I had no luck with the search. Is this a definite tear-down or is there something I should look for first. BTW, I'm experienced on manual rebuilds of many types and once rebuilt a ZF 5-speed in another type of vehicle, having none of the special tools. It took a while longer than it could have but I got it done with no problems. Thanks.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
damn...
the first thing I would be sure of is that the lockout lever or the shifter frame isn't broken or jammed.
There is a frame that supports the shifter, it's made of pig metal and is prone to breaking.
You have to get the console and such off anyway, just seems to make sense to me to be sure it's not the problem before dropping the transmission.
As for working on these boxes, I would pass. They require jigs to support the gear sets and such. Some of the gears require heating, and the recieving shaft, freezing, to make them fit properly.
Those are the things I know...
Contact www.zfdoc.com for a quote.
the first thing I would be sure of is that the lockout lever or the shifter frame isn't broken or jammed.
There is a frame that supports the shifter, it's made of pig metal and is prone to breaking.
You have to get the console and such off anyway, just seems to make sense to me to be sure it's not the problem before dropping the transmission.
As for working on these boxes, I would pass. They require jigs to support the gear sets and such. Some of the gears require heating, and the recieving shaft, freezing, to make them fit properly.
Those are the things I know...
Contact www.zfdoc.com for a quote.
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
I can do the old muncies with my eyes closed and some auto trans but when I took out my six speed and read up on taking it apart --I dont think so. they dont even have a cover to look in there to check it out. Its like the new electronic automatics --leave it to the pros. There isnt even a linkage to knock out of place like the old ones that used to get stuck in reverse. check what bogus said then call the doc like I did --He is very helpfull --emailed me every day about my problem
Thread Starter
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by bogus
damn...
the first thing I would be sure of is that the lockout lever or the shifter frame isn't broken or jammed.
There is a frame that supports the shifter, it's made of pig metal and is prone to breaking.
You have to get the console and such off anyway, just seems to make sense to me to be sure it's not the problem before dropping the transmission.
As for working on these boxes, I would pass. They require jigs to support the gear sets and such. Some of the gears require heating, and the recieving shaft, freezing, to make them fit properly.
Those are the things I know...
Contact www.zfdoc.com for a quote.
the first thing I would be sure of is that the lockout lever or the shifter frame isn't broken or jammed.
There is a frame that supports the shifter, it's made of pig metal and is prone to breaking.
You have to get the console and such off anyway, just seems to make sense to me to be sure it's not the problem before dropping the transmission.
As for working on these boxes, I would pass. They require jigs to support the gear sets and such. Some of the gears require heating, and the recieving shaft, freezing, to make them fit properly.
Those are the things I know...
Contact www.zfdoc.com for a quote.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Keep us updated if you tear into it.
I'd guess at worse, you'll need to do a jig or to for disassembling the mainshaft in a press, since a puller might not be capable of it. It's not like it was built by ancient druids.
I did my 4+3 without any special tools, with the exception of the input shaft bearing. I'm gonna rebuild it again though because the 1st gear shim is too big. The design of the ZF is pretty much the same, just more parts. Reverse gear is probably harder to get to.
I'd guess at worse, you'll need to do a jig or to for disassembling the mainshaft in a press, since a puller might not be capable of it. It's not like it was built by ancient druids.
I did my 4+3 without any special tools, with the exception of the input shaft bearing. I'm gonna rebuild it again though because the 1st gear shim is too big. The design of the ZF is pretty much the same, just more parts. Reverse gear is probably harder to get to.
Thread Starter
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by Strick
Hi Chris,
A six speed? For your C4? Are we making the swap?
A six speed? For your C4? Are we making the swap?
Thread Starter
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by CentralCoaster
Keep us updated if you tear into it.
I'd guess at worse, you'll need to do a jig or to for disassembling the mainshaft in a press, since a puller might not be capable of it. It's not like it was built by ancient druids.
I did my 4+3 without any special tools, with the exception of the input shaft bearing. I'm gonna rebuild it again though because the 1st gear shim is too big. The design of the ZF is pretty much the same, just more parts. Reverse gear is probably harder to get to.
I'd guess at worse, you'll need to do a jig or to for disassembling the mainshaft in a press, since a puller might not be capable of it. It's not like it was built by ancient druids.
I did my 4+3 without any special tools, with the exception of the input shaft bearing. I'm gonna rebuild it again though because the 1st gear shim is too big. The design of the ZF is pretty much the same, just more parts. Reverse gear is probably harder to get to.
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