Help Quick Please! Ring gear install question???

90'5.0 Conv · 05-03-2002, 02:21 PM

Well, I've come this far and haven't had a prob till now. I got the pinion gear in and the crush sleeve torqued perfect so I was happy with all that but now I have just installed the ring gear assy. and everything looked ok till I torqued down the caps. After that, I can't move a thing. So I loosen them up and it's still stuck. It's stuck (won't turn or anything) until I bang on the ring gear assy. in an effort to get it out. I don't see anything move but it will loosen up after a few good hits. By the way, when it does spin and the caps aren't tight the wear pattern is perfect. Could i possible not have the races on the bearings good enough? Could the cap be pinching the race causing the bearing to lock up. I just come in from outside because I was frustrated. I can't seem to even get the ring gear assy. out now. Oh and for the people that haven't read my other posts, I have ford racing 4.10's that I'm replacing the 2.73's with. I used all the original shims. Please help if you have any ideas.

Thanks, James

89 ATI · 05-03-2002, 03:58 PM

You don't have any backlash in your gears. You should have between .006 and .012 backlash and if there isn't any you can't turn the gears. You need to remove some shim from the carrier side and put it on the other side. Make sure you don't have the shims behind the bearings switched.

gtsr515 · 05-03-2002, 04:12 PM

Zero BACKLASH and way too much pre-load?

90'5.0 Conv · 05-03-2002, 04:19 PM

I torqued the pinion nut all the way to the point it didn't wiggle around side to side. Then turned 1/8th turn. Was this not right? Do I need another crush sleeve to do it again? How do I know when the preload is right? Why do i have backlash when the caps aren't torqued and none when they are?

thanks, James

Jeff Chambers · 05-03-2002, 04:48 PM

Torque the pinion nut until the pinion has 18-24 IN-LBS of running torque with new bearings or 10-15 IN-LBS of running torque with used bearings. As others have said, you need to obtain about 0.008" of backlash with the ring gear. Also don't forget that 0.006" gets added to each carrier shim group after you've obtained the backlash to properly preload the carrier bearings. You'll need a dial indicator to properly measure the backlash.

89 ATI · 05-03-2002, 07:53 PM

The pinion is fine you just need to move the ring gear away from the pinion gear a few thousands of an inch to give it some backlash. You measure it by putting an indicator on the ring gear and moving it back and forth without moving the pinion. That little bit of movement is your backlash.

05-03-2002, 02:21 PM	#1
90'5.0 Conv Long time member in and out Join Date: Jul 2001 Location: Albany, Ga Posts: 343	Help Quick Please! Ring gear install question??? Well, I've come this far and haven't had a prob till now. I got the pinion gear in and the crush sleeve torqued perfect so I was happy with all that but now I have just installed the ring gear assy. and everything looked ok till I torqued down the caps. After that, I can't move a thing. So I loosen them up and it's still stuck. It's stuck (won't turn or anything) until I bang on the ring gear assy. in an effort to get it out. I don't see anything move but it will loosen up after a few good hits. By the way, when it does spin and the caps aren't tight the wear pattern is perfect. Could i possible not have the races on the bearings good enough? Could the cap be pinching the race causing the bearing to lock up. I just come in from outside because I was frustrated. I can't seem to even get the ring gear assy. out now. Oh and for the people that haven't read my other posts, I have ford racing 4.10's that I'm replacing the 2.73's with. I used all the original shims. Please help if you have any ideas. Thanks, James __________________ 90' Mustang GT Convertible- C4 w/ manual body 4.10's soon to be 3.27's 2 Ch Flowmasters 1/8th ET 9.04

05-03-2002, 03:58 PM	#2
89 ATI Registered Member Join Date: Sep 2000 Location: Lafayette, Indiana Posts: 120	You don't have any backlash in your gears. You should have between .006 and .012 backlash and if there isn't any you can't turn the gears. You need to remove some shim from the carrier side and put it on the other side. Make sure you don't have the shims behind the bearings switched. __________________ 89 GT convertible, Kenny Brown level 5, Edelbrock performer, AFR 165's, Comp cams XE270HR, C&L 76, 24# inj, Crane 1.7's, 70mm BBK throttle body 298.2 hp 328.2 tq Mustang dyno "Our lady of blessed acceleration don't fail me now" Elwood Blues

05-03-2002, 04:12 PM	#3
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	Zero BACKLASH and way too much pre-load? __________________ Remember...2nd place is 1st place for losers!

05-03-2002, 04:19 PM	#4
90'5.0 Conv Long time member in and out Join Date: Jul 2001 Location: Albany, Ga Posts: 343	I torqued the pinion nut all the way to the point it didn't wiggle around side to side. Then turned 1/8th turn. Was this not right? Do I need another crush sleeve to do it again? How do I know when the preload is right? Why do i have backlash when the caps aren't torqued and none when they are? thanks, James __________________ 90' Mustang GT Convertible- C4 w/ manual body 4.10's soon to be 3.27's 2 Ch Flowmasters 1/8th ET 9.04

05-03-2002, 04:48 PM	#5
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Torque the pinion nut until the pinion has 18-24 IN-LBS of running torque with new bearings or 10-15 IN-LBS of running torque with used bearings. As others have said, you need to obtain about 0.008" of backlash with the ring gear. Also don't forget that 0.006" gets added to each carrier shim group after you've obtained the backlash to properly preload the carrier bearings. You'll need a dial indicator to properly measure the backlash. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

05-03-2002, 07:53 PM	#6
89 ATI Registered Member Join Date: Sep 2000 Location: Lafayette, Indiana Posts: 120	The pinion is fine you just need to move the ring gear away from the pinion gear a few thousands of an inch to give it some backlash. You measure it by putting an indicator on the ring gear and moving it back and forth without moving the pinion. That little bit of movement is your backlash. __________________ 89 GT convertible, Kenny Brown level 5, Edelbrock performer, AFR 165's, Comp cams XE270HR, C&L 76, 24# inj, Crane 1.7's, 70mm BBK throttle body 298.2 hp 328.2 tq Mustang dyno "Our lady of blessed acceleration don't fail me now" Elwood Blues

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Gear Install question	1BAD302	Windsor Power	5	05-15-2003 05:58 PM
Quick question, how much did you pay for your H-pipe install from a shop?	96_4.6	Blue Oval Lounge	5	08-02-2002 12:17 AM
BBK Equal Length Shorties - Install Question	Mac_5.0	Windsor Power	3	06-12-2002 07:50 AM
ring and pinion install	stanger8172	Windsor Power	5	03-25-2001 01:19 AM
what is the going price of gear install?	82 GT	Windsor Power	9	03-08-2001 05:16 PM