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Old 10-21-2009, 09:37 AM   #1
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Atlas TC Maintanance

Hi Folks.

Can you guys give pointers on changing the fluids for the Atlas TC.

I know see the drain plug but I need to know the refill procedure. Also, any fluid recommendations?

Thanks a bunch!
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Old 10-21-2009, 06:03 PM   #2
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Re: Atlas TC Maintanance

Here is what I got either on the Atlas website or they emailed to me. BTW, I use the Torco product. Hope it helps:

LUBRICATION
This unit is shipped Dry. Before operating your Atlas, please fill with the recommended gear
lubricant (Torco MTF). If you are unable to find this lubricant, one of the following synthetic oils can be substituted for the Torco brand: Castrol Syntec 5w-50, Valvoline 20w-50 or Mobil 1 Synthetic 15w-50. We have found these synthetic lubricants to work well in the Atlas.

The recommended oil capacity is 2 quarts in the Atlas 2 speed and 2-1/2 quarts for the
Atlas 4 speed transfer case. The Atlas does not offer any type of ‘weep hole’ to verify
the oil level. Therefore, we have supplied your unit with a site tube to aid in
determining the correct fluid level. Once the required two quarts are put into the
Atlas, we recommend marking the oil level on the site tube. We like to use a small
zip tie as a oil level marking device. Note: When the Atlas is overfilled with more
than the recommended levels, it will cause the unit to vent the extra oil out the
breather.

LUBRICATION:
Before lowering your vehicle, fill your Atlas with the Torco oil provided. By using a hand pump, connect the hose end to the upper fitting of the site tube to fill the Atlas to the recommended oil level. Once this is completed, re-secure the upper site tube fitting to the Atlas. If you are unable to find this oil brand locally, we offer it under P/N 303200, or you can use one of the following synthetic oils as a substitute: Castrol Syntec 5w-50, Valvoline 20w-50 or Mobil 1 Synthetic 15w-50.


steve
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Old 10-21-2009, 08:40 PM   #3
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Re: Atlas TC Maintanance

Ditto the Torco, you can use a clear plastic tube from a hardware store from anywhere above the tcase (gravity!), just be sure to have help to ensure the other end of the tube stays in the case (can you say 5 quarts of Royal Purple on the driveway? )

The correct amount is exactly 2 quarts. The zip tie should match the 2 quarts, but when in doubt go with the 2 quarts not the zip tie. That's regardless of vehicle or clock angle, and my understanding is it's not a recommendation but the only way to correctly fill the Atlas 2.

What is the interval supposed to be on changing the Atlas fluid?
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Old 10-21-2009, 09:48 PM   #4
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Re: Atlas TC Maintanance

So how much Torco can you drain by removing the lower end of the tube? Is it best to park the van on a slight slope so the lower fitting is a natural drain, or is it best to use a suction gun?


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Old 10-22-2009, 12:41 AM   #5
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Re: Atlas TC Maintanance

Quote:
Originally Posted by jage
What is the interval supposed to be on changing the Atlas fluid?
According to the SMB 2006 Model Year Chart I have (can't imagine it is any different as long as you have the same Transfer Case) they recommend every 20,000 miles.

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Old 10-27-2009, 04:35 PM   #6
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Re: Atlas TC Maintanance

Hi everyone! All of the above is correct. We are currently shipping out Atlas T-cases with two quarts of Amsoil part # MTG01 75W - 90W GL4.
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Old 10-27-2009, 07:07 PM   #7
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Re: Atlas TC Maintanance

Thanks for the helpful info.

Ray
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