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Differential Fill PLugs?

4.2K views 33 replies 18 participants last post by  GreenGoblin  
#1 ·
On my 05 650 where should it be filled to on the front and the back should it be filled to the bottom of the threads on both the front and the back or what? I just looked at both of them and i cant see any fluid in either of them just trying to find out what the max and min line is on these things.
 
#2 ·
bottom of the threads on the back...1" below on the front (there's a little overflow plug on the front)

Mine was low in the rear from the factory also and I've heard others say the same.

Doug
 
#4 ·
Kenny already told me, but I forgot; could some body please tell me what type or weight fluid that I need to buy for this? :chug:
 
#12 ·
What is the capacity......or I should ask, will a quart do both differentials? I'm at work with it it hand (the gear oil) and just wondering??
 
#13 ·
Originally posted by modn@Apr 20 2005, 01:00 PM
What is the capacity......or I should ask, will a quart do both differentials? I'm at work with it it hand (the gear oil) and just wondering??
Good question I too would like to know.
 
#15 ·
Okay here is my take on changing the differential lube as I just got done doing it. Jack the wheeler off the ground...on the front take out the bottom plug and start draining. Take out the fluid level plug just below the fill plug 6mm. I blew air into it to try and get every drop out of it. Put the drain plug back in. Now take out the fill plug and using the gear lube pump on the bottle (a plastic pump with a hose on it to fill in tight places) start filling it up as you turn the wheel next to you for faster displacement. I basically filled it to the top of the fill hole and let the fluid level hole drain it out to the proper level. After it's finished draining put the plugs in.

Do the same for the back Diff, but it doesn't have a fluid level hole. Fill it up while spinning the wheel, let it level off on it's own and make sure it is level with the threads of the fill hole, if not spin the wheel and do it again until it levels off flush with the threads then put the plug in. The back diff seems to take a bit more than the front (maybe just me), but a quart will more than do it. Little messy, but no more than changing the oil in it. Hope this helps!!
 
#16 ·
yea, sounds good. a quart is more than enough to do it ince, but not quite enough for twice. if you read the differential capacities and add according to this, you won't fill to the threads on the rear, but a little overfill is o.k. in my opinion. so fill and FLUSH often man~!!!

jimmer
 
#17 ·
Originally posted by DaveB@Apr 20 2005, 07:20 AM
80-90 is old school. Spend the extra and get 75-90 synthetic. Synthetic is much more tolerant to water and actually absorbs a bunch of water before it becomes an issue. I just get it from Canadian Tire (up here in Canuck land)......any auto supply store wil have it.
As a fellow Canuck, also in Alberta (Leduc). Small internet eh :D. What are you using for motor oil? Does crappy tire have oil filters a guy could use? Or do I need to get one from a dealer?
I want to change the fluids in my 650 this weekend. I will go with the 75w90 synthetic
for the diffs. Thanks.

Molsondrinkr
 
#18 ·
Originally posted by Molsondrinkr+Apr 20 2005, 06:10 PM--><div class='quotetop'>QUOTE (Molsondrinkr @ Apr 20 2005, 06:10 PM)</div>
<!--QuoteBegin-DaveB
@Apr 20 2005, 07:20 AM
80-90 is old school. Spend the extra and get 75-90 synthetic. Synthetic is much more tolerant to water and actually absorbs a bunch of water before it becomes an issue. I just get it from Canadian Tire (up here in Canuck land)......any auto supply store wil have it.
As a fellow Canuck, also in Alberta (Leduc). Small internet eh :D. What are you using for motor oil? Does crappy tire have oil filters a guy could use? Or do I need to get one from a dealer?
I want to change the fluids in my 650 this weekend. I will go with the 75w90 synthetic
for the diffs. Thanks.

Molsondrinkr [/b]
As long as it matches up....I use the cheapest one I can find. There is a thread here somewhere that gives you different part #'s or they may have a book there to identify the right one.
 
#19 ·
Myself, I just pull the drain plugs & go about doing some other things while letting them drain. I also find they'll drain a little quicker with the fill plug removed as well. All mine calls for is 8.5 ounces in the rear & 9.3 in the front. I simply measure out 9 to 10 ounces for both. my2cents
 
#22 ·
Originally posted by kendog+Apr 21 2005, 08:22 PM--><div class='quotetop'>QUOTE (kendog @ Apr 21 2005, 08:22 PM)</div>
<!--QuoteBegin-DEADEYE343
@Apr 21 2005, 08:17 PM
Good topic as I will be doing mine sometime this week also. If water got in there it will turn the oil a miky white color correct? :)
thumbguy Correct. thumbguy [/b]
My MAN! :site:
 
#23 ·
The quality of mine looked good, but the quantity in my front diff sucked!!! Too low for the good!!! I would advise everyone to at least take a look if not change it, those differentials keep you on the trails and out of the shop, not to mention big $$$ for them for a small maintenance check!!
 
#25 ·
question? +i have an 03 500 auto changed diffs 2-3 wks ago frt now leaks and slings gear oil took to dealer gave me new boot and clamp for top of diff. i filled front diff to bottom of threads on fill hole. i don't think boot will fix promblem. could i be overfilling diff any help would be appreciated secret