Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana

need help with pinion shim!

Thread Tools
 
Search this Thread
 
Old 02-19-2012, 07:57 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (65)
 
poltergeist 02's Avatar
 
Join Date: Jan 2010
Posts: 1,401
Likes: 0
Received 2 Likes on 2 Posts

Default need help with pinion shim!

ok, so my old set of motive gears had a pinion depth marked as 2.292 on the pinion and the shim that was used with that set was a .031
now my new set of gears the pinion is marked 2.303 a total of .011 difference.
my question is do i add or subtract .011 from the .031 shim that was on the pinion of my old set?
Old 02-19-2012, 08:37 PM
  #2  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,155
Received 129 Likes on 114 Posts

Default

are the pinion gears of the same length( from the face of the pinion to the surface where the shim sits) ? if they're different,you have to take that difference into account too.
that marked dimension is from the centerline of the carrier to the face of the pinion.
Old 02-19-2012, 08:40 PM
  #3  
TECH Fanatic
Thread Starter
iTrader: (65)
 
poltergeist 02's Avatar
 
Join Date: Jan 2010
Posts: 1,401
Likes: 0
Received 2 Likes on 2 Posts

Default

the new pinion head is .002 smaller/ shorter
Old 02-19-2012, 08:45 PM
  #4  
TECH Fanatic
Thread Starter
iTrader: (65)
 
poltergeist 02's Avatar
 
Join Date: Jan 2010
Posts: 1,401
Likes: 0
Received 2 Likes on 2 Posts

Default

i don't have a pinion depth tool. thats why i'm just trying to get somewhere in the ballpark by using simple math.
Old 02-20-2012, 06:48 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (65)
 
poltergeist 02's Avatar
 
Join Date: Jan 2010
Posts: 1,401
Likes: 0
Received 2 Likes on 2 Posts

Default

anything?
Old 02-20-2012, 07:13 PM
  #6  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,155
Received 129 Likes on 114 Posts

Default

based on the info supplied
the new pinion has to sit .011 further away from carrier centerline than the old pinion sat,.031 - .011 =.020.
since the new pinion gear section is .002 shorter,.020 + .002 = .022.

hope someone else will post in to agree/verify/dis-agree.
Old 02-20-2012, 11:17 PM
  #7  
11 Second Club
iTrader: (6)
 
speed_demon24's Avatar
 
Join Date: Dec 2001
Location: Ocala, FL
Posts: 4,609
Likes: 0
Received 2 Likes on 2 Posts

Default

Subtract the .011".



Quick Reply: need help with pinion shim!



All times are GMT -5. The time now is 09:44 AM.