Grinding in reverse - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > Grinding in reverse

The RuffStuff "I can't go to EJS" Sale!Offset Tie Rod Kit From RuffStuff!Check out our NEW Steering Stuff!

Reply
Unread 07-02-2013, 03:31 PM   #1
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 115
Grinding in reverse

Just recently the t5 in my 85 cj7 has started grinding when shifting into reverse. Goes into all 5 other gears fine, it just doesn't like reverse.

I just changed the fluid to royal purple synchromax about a month ago.

Any idea for a fix? For now I'm just trying to put it gear slowly...

AlexThePhotoGuy is offline   Reply With Quote
Unread 07-02-2013, 03:33 PM   #2
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 3,769
Bump 1st gear first. Then put it in "R".
It grinds because there's no syncro's for reverse.
LG
LumpyGrits is offline   Reply With Quote
Unread 07-02-2013, 03:34 PM   #3
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 115
Ooh. Smart. I'll have to try that as soon as the thunderstorms clear. Thanks!
AlexThePhotoGuy is offline   Reply With Quote
Unread 07-03-2013, 09:33 AM   #4
FrnchDp
Member
 
FrnchDp's Avatar
1986 CJ7 
 
Join Date: Jan 2004
Location: Bloomington, Indiana
Posts: 301
I've had a T5 for as long as I can remember.. always go into 1st before sliding into R. Kills the grind.
__________________
1986 CJ-7 - I6-258

2000 WJ Limited - V8-287
FrnchDp is offline   Reply With Quote
Unread 07-03-2013, 09:36 AM   #5
robs7
Registered User
1983 CJ7 
 
Join Date: May 2013
Location: Louisville, Kentucky
Posts: 174
My T176 does this occasionally. Will the first gear trick work for it as well? Rob
robs7 is offline   Reply With Quote
Unread 07-03-2013, 09:47 AM   #6
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 12,658
Quote:
Originally Posted by AlexThePhotoGuy View Post
Just recently the t5 in my 85 cj7 has started grinding when shifting into reverse. Goes into all 5 other gears fine, it just doesn't like reverse.

I just changed the fluid to royal purple synchromax about a month ago.

Any idea for a fix? For now I'm just trying to put it gear slowly...
Quote:
Originally Posted by LumpyGrits View Post
Bump 1st gear first. Then put it in "R".
It grinds because there's no syncro's for reverse.
LG
Quote:
Originally Posted by robs7 View Post
My T176 does this occasionally. Will the first gear trick work for it as well? Rob
Good for right now but it would be good to make sure your linkage hasn't worn out to the point that you ware not fully releasing your clutch.

after putting it into first, put it in neutral and wait about 10 seconds and slowly put it into reverse, if the clutch is dragging, then you will get some more grinding.

I've seen a lot of worn out linkages were you cannot fully release the clutch.

John Strenk is offline   Reply With Quote
Unread 07-03-2013, 10:09 AM   #7
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 115
@John. Good advice. How hard is it to replace a linkage? Also... Where is the linkage located?
AlexThePhotoGuy is offline   Reply With Quote
Unread 07-03-2013, 10:33 AM   #8
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 12,658
Not hard, From the pedal through the firewall to the bellcrank near the frame.

Hardest part will be getting pins off pedal.

Might have to replace bell crank if warn also.


http://www.quadratec.com/products/52...Fc9DMgodJSoAxQ

I upgraded mine to heim joints. No more wear.:

http://www.gnarly4x4.com/rugged-ridg...lutch-linkage/
John Strenk is offline   Reply With Quote
Unread 07-03-2013, 11:26 AM   #9
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 115
Thanks! I'll check the 1st great trick and see what reverse does.
AlexThePhotoGuy is offline   Reply With Quote
Unread 07-03-2013, 12:06 PM   #10
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 115
Ya know, now that I think of it, when I depress the clutch pedal, the first inch or two feels very free before it disengages the clutch (like the only resistance is a small spring). Is that another indication of a worn linkage?
AlexThePhotoGuy is offline   Reply With Quote
Unread 07-03-2013, 12:34 PM   #11
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 12,658
Well it should have some free play and an inch is good

BUT

If there is a lot of slop in the linkage, You can't press it down far enough.

Lets say total travel of the pedal is 6". It's at the end of a 10" lever arm. So the hole for the linkage arm only travels 2" for 6" of pedal travel.
3 to 1 ratio in this example.

The 1" of free play is really 1/3 of an inch. out of the 2"

now if both the rod and bell cranks are warn, say it add's up to 1" of slop total. that's 3" on the pedal before anything starts to move. So were you previously had 5" of travel to move the clutch arm, you only have 2". That aint going to move the arm much.

here is an example of a worn bell crank:


You can see were it adds up....
John Strenk is offline   Reply With Quote
Unread 07-03-2013, 12:38 PM   #12
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 3,769
If you have more than 1 1/4" free travel, you have to much.
Easy to adjust.
OEM linkage is JUNK, BTW.
Favtory Service Manual has this info.
LG
LumpyGrits is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.