Anyone know how to shim a diff? - ArcticChat.com - Arctic Cat Forum

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post #1 of 9 Old 07-26-2012, 07:42 PM Thread Starter
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Sled: 99 z 440 04 mxz 800
08-09 Mileage: 1500
07-08 Mileage: 500
06-07 Mileage: 3000
2010 Mileage: 400 bike broke
Anyone know how to shim a diff?

I blew my rear diff and I have everything to build the diff from scratch but I need know how to install the pinion and how to shim the diff

2011 Mud Pro 700
HMF EXHAUST
31 Laws
3.6 diffs
WCD soon to be installed
Nitrous
STI HD rims
Rad relocate
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uni air filter
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post #2 of 9 Old 07-26-2012, 10:22 PM Thread Starter
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Sled: 99 z 440 04 mxz 800
08-09 Mileage: 1500
07-08 Mileage: 500
06-07 Mileage: 3000
2010 Mileage: 400 bike broke
Also my diff case isn't threaded do I tap and dye them or what do I do!!!

2011 Mud Pro 700
HMF EXHAUST
31 Laws
3.6 diffs
WCD soon to be installed
Nitrous
STI HD rims
Rad relocate
Blacked out lights
Dual winches
uni air filter
PCV
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post #3 of 9 Old 07-26-2012, 10:23 PM
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2007 Mileage: 800
2006 Mileage: 800
From what I have read the diff bolts they send are self tapping so you just thread them in straight

Dynojet/142m/45p/3rd/3turns--Clipped and drilled--Unifilter--Easy adjust PMS--L.C.V. mod--AC Swaybar--Exhaust mod--2"Snorkels--Sanny shock bushings-- Airdam stage 1--PSC phase 2--21/ 23gr rollers--Dalton yellow spring--.7mm shim--Sanny Steerlites--RTR Flex Bracket--2 up seat / pegs--Tach--AC handguards--28" Outlaw mst's--Skull tailight--Skull shifter--Self Resetting Breakers--1" Wheel spacers--Customcncparts Steering Damper--AC deluxe handwarmers--6000k HID'S hi/lo--AC Deluxe Bumpers--Inline Fuel Filter-- O2 sensor \AFR guage--Black Magic Full Stainless Exhaust System--Wireless Winch Remote--29.5 Outlaws--Fox Podium X Rear Shocks--
2013 700 XT trv eps stock



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post #4 of 9 Old 07-26-2012, 11:11 PM Thread Starter
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Sled: 99 z 440 04 mxz 800
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07-08 Mileage: 500
06-07 Mileage: 3000
2010 Mileage: 400 bike broke
Darn lol I'll have to get some bolts. I am
Unsure of how you measure to find out what shims you use too...

2011 Mud Pro 700
HMF EXHAUST
31 Laws
3.6 diffs
WCD soon to be installed
Nitrous
STI HD rims
Rad relocate
Blacked out lights
Dual winches
uni air filter
PCV
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post #5 of 9 Old 07-27-2012, 12:47 PM
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Quote:
Originally Posted by blissman20 View Post
Darn lol I'll have to get some bolts. I am
Unsure of how you measure to find out what shims you use too...

Probably no reason you could not tap the holes yourself and reuse the old bolts instead of purchasing the self tapping variety?

Back lash is set by varying the left and right side shim thickness and end play is set by the total thickness of both shims on each side of the ring gear.

Measuring for end play is a matter of pushing the ring gear left or right and noting how much movement it has with a dial indicator when the ring gear is installed and cover torqued to specs.

Back lash is the space between the teeth where the ring gear mates to the pinion gear. It would be nice if they specified backlash tolerance as degrees of free rotation of the pinion or slop in the gearing. Actual measuring of backlash clearance can be done with Plastigage to check it. It's quick and easy and nearly as accurate to just compare the degrees rotation of the pinion with a known good preset (new) differential once end play is set if you have access to one.

I'll set end play without the pinion installed so I know what the total shim thickness of both shims needs to be without the possibility of interference of the ring gear contacting the pinion. To set back lash then its a matter of subtracting .1 mm from one side and adding .1 mm to the other side to get backlash in spec.

From the manual (Agreed not very clear)

"Gear Case Side - install a 1.3-1.4 mm shim and
tighten the bolts to 28 ft-lb. Verify backlash to
be within a range of 0.28-0.38 mm (0.011-0.015
in.) and end-play to be within a range of
0.10-0.20 mm (0.004-0.008 in.). If not within
specification range, reselect shim until backlash
specification range can be verified."

Note that there is a slight (tiny) bevel on the inside inner lip of a shim. That bevel must face towards the inside or towards the ring gear

Have a Problem?

Troubleshooting First Steps, An amazing number of problems are cured with just these two items.

1. Make sure your battery is FULLY Charged.
2. Try a new spark plug.

Search threads, Check Pinned Section. Pinned Topics Manual or wiring diagram? Manuals
http://countrycat.com/ccstore/index...._Diagrams.html

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post #6 of 9 Old 07-27-2012, 01:25 PM
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ATV: 07 500 auto 13 700 XT trv
2010 Mileage: 800
2007 Mileage: 800
2006 Mileage: 800
If you bought a new diff why are you shimming it?

Dynojet/142m/45p/3rd/3turns--Clipped and drilled--Unifilter--Easy adjust PMS--L.C.V. mod--AC Swaybar--Exhaust mod--2"Snorkels--Sanny shock bushings-- Airdam stage 1--PSC phase 2--21/ 23gr rollers--Dalton yellow spring--.7mm shim--Sanny Steerlites--RTR Flex Bracket--2 up seat / pegs--Tach--AC handguards--28" Outlaw mst's--Skull tailight--Skull shifter--Self Resetting Breakers--1" Wheel spacers--Customcncparts Steering Damper--AC deluxe handwarmers--6000k HID'S hi/lo--AC Deluxe Bumpers--Inline Fuel Filter-- O2 sensor \AFR guage--Black Magic Full Stainless Exhaust System--Wireless Winch Remote--29.5 Outlaws--Fox Podium X Rear Shocks--
2013 700 XT trv eps stock



It's mind over matter,If you don't mind,
It just doesn't matter

No Boost No Bottle
just balls and throttle
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post #7 of 9 Old 07-27-2012, 01:43 PM
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Quote:
Originally Posted by doorfx View Post
If you bought a new diff why are you shimming it?
Maybe he just bought a new diff case and is reusing old parts? Since he has untapped holes in the housing it's obvious he did not buy a complete assembled differential. That should of answered your own question <grin>

Have a Problem?

Troubleshooting First Steps, An amazing number of problems are cured with just these two items.

1. Make sure your battery is FULLY Charged.
2. Try a new spark plug.

Search threads, Check Pinned Section. Pinned Topics Manual or wiring diagram? Manuals
http://countrycat.com/ccstore/index...._Diagrams.html

Improving Search.

Better results when searching for specific information. To find threads where ALL the words, instead of ANY of the words "650H1, Carb, Jetting, Needle Jet, Snorkel" were found...Open up a search window in www.google.com In the find box type without the quotes "650H1 Carb Jetting Needle Jet Snorkel site:Arcticchat.com" & Press return. Find threads, replies or topics by a specific member; just by inserting their user name into the search list; Chances are, your problem is NOT unique and it has been solved many times before.

Are you in a hurry to get an answer?
Use the Google Search Tip
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post #8 of 9 Old 07-27-2012, 02:21 PM
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Join Date: Jan 2011
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Garage
ATV: 07 500 auto 13 700 XT trv
2010 Mileage: 800
2007 Mileage: 800
2006 Mileage: 800
Smartass!! Lol even the mounting holes come untapped

Dynojet/142m/45p/3rd/3turns--Clipped and drilled--Unifilter--Easy adjust PMS--L.C.V. mod--AC Swaybar--Exhaust mod--2"Snorkels--Sanny shock bushings-- Airdam stage 1--PSC phase 2--21/ 23gr rollers--Dalton yellow spring--.7mm shim--Sanny Steerlites--RTR Flex Bracket--2 up seat / pegs--Tach--AC handguards--28" Outlaw mst's--Skull tailight--Skull shifter--Self Resetting Breakers--1" Wheel spacers--Customcncparts Steering Damper--AC deluxe handwarmers--6000k HID'S hi/lo--AC Deluxe Bumpers--Inline Fuel Filter-- O2 sensor \AFR guage--Black Magic Full Stainless Exhaust System--Wireless Winch Remote--29.5 Outlaws--Fox Podium X Rear Shocks--
2013 700 XT trv eps stock



It's mind over matter,If you don't mind,
It just doesn't matter

No Boost No Bottle
just balls and throttle
doorfx is offline  
post #9 of 9 Old 07-27-2012, 07:03 PM Thread Starter
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Thanked 21 Times in 21 Posts
Sled: 99 z 440 04 mxz 800
08-09 Mileage: 1500
07-08 Mileage: 500
06-07 Mileage: 3000
2010 Mileage: 400 bike broke
Thanks wyo.... Door I'll pm you the story. But I have all the parts separately to build the diff lol

2011 Mud Pro 700
HMF EXHAUST
31 Laws
3.6 diffs
WCD soon to be installed
Nitrous
STI HD rims
Rad relocate
Blacked out lights
Dual winches
uni air filter
PCV
blissman20 is offline  
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