setting up gears: how to adjust backlash? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > General Tech > Newbie General 4x4 Discussion
Notices

Reply
 
Share Thread Tools Display Modes
Old 02-20-2004, 07:12 PM   #1 (permalink)
Registered User
 
Join Date: Nov 2001
Member # 7980
Location: Edmonton AB Canada
Posts: 1,066
Question setting up gears: how to adjust backlash?

i understand that backlash is the amount of movement between the ring and pinion gears, however my question is how does one adjust backlash? where do you place shims (behind the carrier bearings? [D30])
and will the addition of shims increase or decrease the backlash, bottom line, i don't really know how one would adjust the depth of the carrier, i thought this was just determined by the bearing caps snugging it all down...

thanks
__________________
'00 TJ Built, locked, lifted and armored
Sharp is offline   Reply With Quote
Old 02-20-2004, 07:16 PM   #2 (permalink)
Registered User
 
Join Date: Dec 2002
Member # 15606
Location: Austin,TX
Posts: 225
I'm not an expert but the pinion should set the depth and the carrier is adjusted side to side.
Put the shims in the same place they were when you took it apart.
__________________
'88 YJ, SOA, 8.8 w/Detroit and 4.10's NV3550, and 36's
Neal'88yj is offline   Reply With Quote
Sponsored Links
Old 02-20-2004, 07:29 PM   #3 (permalink)
Registered User
 
Join Date: Nov 2001
Member # 7980
Location: Edmonton AB Canada
Posts: 1,066
ya i know that the pinion gear sets the depth, but everwhere i read...mostly on randy's ring and pinion they keep mentioning that the ring gear must be moved....this is from their site:

"Correct backlash is obtained by
shimming or adjusting the ring gear
away from or closer to the pinion."

this is why i guess i was misled
__________________
'00 TJ Built, locked, lifted and armored
Sharp is offline   Reply With Quote
Old 02-20-2004, 07:53 PM   #4 (permalink)
Registered User
 
Rescue's Avatar
 
Join Date: Dec 2003
Member # 25600
Location: Canada Quebec 5 min from Ottawa
Posts: 1,288
The shims will depend on the axle you have. Toyota 8" for example has shims for the pinion to set the depth of the pinion into the ring. The way to adjust the side to side is by adjusting 2 large nut locks. In your case you might have shims to adjust the side to side.

When I did mine it took me 4 tries to get them perfectly centered with blue methylene, so take your time because it can take a while
__________________
85 4Runner 35" M/T no lift (fender trim), 5.29, spooled rear, Marlin Crawler dual T-cases, Smurfields, home made can back& pull pal,headers, k&n, Premier power welder, dual batteries, armor, etc.
82 custom short bed (show truck) swapped in a 22RE with W56 transmission riding on 35" BFG's, Sold...
Rescue is offline   Reply With Quote
Old 02-20-2004, 08:04 PM   #5 (permalink)
Registered User
 
Join Date: Dec 2002
Member # 15606
Location: Austin,TX
Posts: 225
Quote:
Originally posted by Sharp
"Correct backlash is obtained by
shimming or adjusting the ring gear
away from or closer to the pinion."

Your thinking on the wrong axis.
Closer sideways not front to back.
__________________
'88 YJ, SOA, 8.8 w/Detroit and 4.10's NV3550, and 36's
Neal'88yj is offline   Reply With Quote
Old 02-20-2004, 09:06 PM   #6 (permalink)
Registered User
 
Join Date: Sep 2002
Member # 13889
Location: Conifer, CO
Posts: 346
Quote:
Originally posted by Neal'88yj


Your thinking on the wrong axis.
Closer sideways not front to back.
Exactly. Pushing the ring towards the pinion decreases the backlash (makes them mesh tighter together) moving the ring away fromt he pinion increases the backlash.
__________________
CJ7, 1 tons, 5.7l, hummers, IROK's etc., etc.
scope is offline   Reply With Quote
Old 02-20-2004, 10:10 PM   #7 (permalink)
Registered User
 
Join Date: Nov 2001
Member # 7980
Location: Edmonton AB Canada
Posts: 1,066
oh man, what a brain fart, i guess i got to read less at a time and comprehend more!!!
thanks guys
__________________
'00 TJ Built, locked, lifted and armored
Sharp is offline   Reply With Quote
Old 02-21-2004, 03:18 AM   #8 (permalink)
Wheeler
 
Join Date: Mar 2003
Member # 18276
Location: New Lenox, IL
Posts: 206
Not to flame, just FYI...before attempting a gear install, first read, then reread, then read again all of the info, and the instructions that you can on how to do it. It's not difficult once you learn how, and i'm sure it would be much easier if you had someone teach you, but trying to figure out how to do it from reading stuff takes a lot of time to let it sink in so you really understand what's going on and what you're trying to accomplish with each step, and how each step affects every setting.

So if you're asking now how to adjust backlash, i'm guessing you haven't done too much reading on the subject. So again....go read some more, and then read something else, and then maybe do some research....seriously.

-Ron-
Krash80 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 05:02 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.