Changing under fluids this weekend - 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 > Changing under fluids this weekend

Rough Country Deals at JeepHut.comSave at JeepHut on Smittybilt Soft topsUp to $75 Cash Back on Your ARB Fridge Freezer Purchase

Reply
Unread 05-14-2013, 12:08 PM   #1
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 126
Changing under fluids this weekend

Planning on changing the fluids on my drivetrain this weekend. The PO of my new-to-me 85 CJ7 w/i6 said in the last 12 years they pretty much just changed the oil from what he remembers. No idea what I'll find. I'll do some research on best fluids.

Any tips or tricks for changing fluids on the stock differentials, t-case, and t-5 tranny? Anything in addition I should look for while they're open?

AlexThePhotoGuy is offline   Reply With Quote
Unread 05-14-2013, 12:54 PM   #2
MrWonderful73
Registered User
1986 CJ7 
 
Join Date: Nov 2010
Location: Luck, Wisconsin
Posts: 185
Its much easier if you have a way to pump in the fluids, I cant remember if its the transfer case or the transmission but one of them is kind of a bear to get the bottle up too.
MrWonderful73 is offline   Reply With Quote
Unread 05-14-2013, 01:07 PM   #3
PROJECT 23
Registered User
1985 CJ7 
 
Join Date: May 2011
Location: North Ridgeville, Ohio
Posts: 2,352
The T-5 is a PITA to add fluid. Get yourself a pump...
__________________
[B][COLOR="DarkRed"]Gone Fishin'[/COLOR][/B]
PROJECT 23 is offline   Reply With Quote
Unread 05-14-2013, 01:12 PM   #4
agear
Registered User
1984 CJ7 
 
Join Date: May 2011
Location: norfolk, virginia
Posts: 1,795
You can buy a little pump which resembles and works the same as the ol' softsoap bottle in your house.just hose clamp a hose on the siphon tube anda stick it in your 1 gallon container gear oil comes in.
__________________
1984 jeep cj7, 258 I6, rebuilt T176,rebuilt Dana 300, amc 20 , dana 30, 4.10's Trac-lok in rear , 4.10's detroit soft locker in dana 30, 2.5 inch bds suspension lift, 1 inch polyurethan body mount lift. Line ex. weber carburetor. factory tach. factory clock ,oem replacement speedomter cluster, and oil pressure gauge, factory volt gauge.
agear is offline   Reply With Quote
Unread 05-14-2013, 01:31 PM   #5
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 126
What about differential seals? Use rtv or a gasket? Anything to check with the diff covers off?
AlexThePhotoGuy is offline   Reply With Quote
Unread 05-14-2013, 01:56 PM   #6
Davis77Cj
Registered User
1977 CJ7 
 
Join Date: Jan 2013
Location: castalia, north carolina
Posts: 260
I would say get a good quality gasket, just my personal preferance bc I hate RTV. While back there check for metal shavings and look at the contact area of the ring gear and look for any chips in the teeth
__________________
Only in America do you have the God given right to be loudly opinionated about something that you are completly ignorant of.
Davis77Cj is offline   Reply With Quote
Unread 05-14-2013, 02:02 PM   #7
pagnani
Registered User
1983 CJ7 
 
Join Date: Feb 2012
Location: provo, ut
Posts: 196
Before you open the drain plug on the bottom, make sure that you can open up the fill plug on the top. It would be a terrible thing to drain the fluid, then for whatever reason not be able to fill it up without going through the top of the transmission.
__________________
83 CJ7 D44 rear, 4.56, 4" YJ lift, 33" MT, Warn bumper, XRC-8, LOD TCarrier, PS Sliders
"In-4-LO"
pagnani is offline   Reply With Quote
Unread 05-14-2013, 02:05 PM   #8
Davis77Cj
Registered User
1977 CJ7 
 
Join Date: Jan 2013
Location: castalia, north carolina
Posts: 260
Ditto ^^ same with the axle
__________________
Only in America do you have the God given right to be loudly opinionated about something that you are completly ignorant of.
Davis77Cj is offline   Reply With Quote
Unread 05-14-2013, 03:22 PM   #9
ASteve
Web Wheeler
 
ASteve's Avatar
1972 CJ5 
 
Join Date: Oct 2009
Location: Nor-Cal, California
Posts: 1,552
RTV for the Differentials, and thread sealer for the tranny fill and drain bolts. RTV is easy to scrape off the differentials and it seals an uneven surface and or bent differential cover better than a gasket.

SC
__________________
http://www.astevecali.com
ASteve is offline   Reply With Quote
Unread 05-14-2013, 06:48 PM   #10
keith460
Jeep. There's Only One
 
keith460's Avatar
1984 CJ7 
 
Join Date: Jan 2007
Location: Doylestown, PA
Posts: 4,767
Be careful changing fluids in the T5 transmission, you don't want to remove the wrong plug and wind up losing reverse. Your 1985 version T5 should have the tamper-proof Torx bolt on the upper drivers side so don't attempt to remove it thinking it is the fill plug, it is not.

Both the drain and the fill plug are located on the passenger side of the T5 transmission.

__________________
.
1984 CJ-7 Renegade
__________________

Restoration Thread:http://www.jeepsunlimited.com/forums...d.php?t=434226
keith460 is offline   Reply With Quote
Unread 05-15-2013, 02:20 PM   #11
agear
Registered User
1984 CJ7 
 
Join Date: May 2011
Location: norfolk, virginia
Posts: 1,795
Quote:
Originally Posted by keith460 View Post
Be careful changing fluids in the T5 transmission, you don't want to remove the wrong plug and wind up losing reverse. Your 1985 version T5 should have the tamper-proof Torx bolt on the upper drivers side so don't attempt to remove it thinking it is the fill plug, it is not.

Both the drain and the fill plug are located on the passenger side of the T5 transmission.

I remember the screw that holds your reverse linkages looks just like the drain plug. I didn't know it had a fill plug. You're sure it doesn't get filled from the top cover ?


For your oil seals coat the outside eges in permatex super 300 and keep it off the rubber lip- put grease on the lip. The spring on the seal always goes toward the lubrication/gear oil. I use a complete covering thin film of ultra black on the differential cover and on the housing with no gasket. Make sure you get them clean so no residue comes off with brake clean on a rag , not to mention all the old sealant off. These methods have made leak-free seals for me. I learned how to do the differential cover sealing from TRUCKS! on the powerblock on SPIKE
__________________
1984 jeep cj7, 258 I6, rebuilt T176,rebuilt Dana 300, amc 20 , dana 30, 4.10's Trac-lok in rear , 4.10's detroit soft locker in dana 30, 2.5 inch bds suspension lift, 1 inch polyurethan body mount lift. Line ex. weber carburetor. factory tach. factory clock ,oem replacement speedomter cluster, and oil pressure gauge, factory volt gauge.
agear is offline   Reply With Quote
Unread 05-15-2013, 03:44 PM   #12
CSP
Registered User
 
Join Date: Aug 2002
Location: Colorado
Posts: 12,108
I'm a big fan of Permatex "The Right Stuff" gasket maker. I've probably sealed a couple dozen diffs/transmissions/valve covers/etc. with the stuff and not had a single leak. You don't have to wait for it to set up either (not supposed to actually).

This reminds me that I need to get another can of it. Glad I saw this thread.
CSP is online now   Reply With Quote
Unread 05-15-2013, 05:14 PM   #13
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 126
Thanks everyone! Now I'm worried I'm going to grab the wrong bolt on my t5... Anyone have more photos of the drain and fill plug? (if there is a fill plug?)
AlexThePhotoGuy is offline   Reply With Quote
Unread 05-15-2013, 06:05 PM   #14
keith460
Jeep. There's Only One
 
keith460's Avatar
1984 CJ7 
 
Join Date: Jan 2007
Location: Doylestown, PA
Posts: 4,767
All manual transmission have fill and drain plugs on them as far as I know.



__________________
.
1984 CJ-7 Renegade
__________________

Restoration Thread:http://www.jeepsunlimited.com/forums...d.php?t=434226
keith460 is offline   Reply With Quote
Unread 05-17-2013, 12:39 PM   #15
AlexThePhotoGuy
Registered User
1985 CJ7 
 
Join Date: Feb 2013
Location: Decatur, GEORGIA
Posts: 126
Thanks for the detailed pics!

I looked up under there today to spray some PB on the bolts and really got to noticing... so much is covered in gunk! I know I have a decent valve cover leak up top (another project) that is leaking below to what appears to be the bell housing and perhaps the driveshaft (maybe slinging it everywhere). While I'm up under there, does it make sense to fix a few more seals? In particular, I'm looking at the rear of the transfer case in the attached pic. Are there TWO inspection plates that I should re-gasket? The one on the bottom looks hard to get to with the skid plate on... and I've heard the skid plate holds the T-case it in place. Any ideas? Thanks team!
img_20130517_094759_719.jpg  
AlexThePhotoGuy 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.