Quadra trac and reduction unit fluid fill
hey all. I'm on the downhill leg of a 76 cj7 restoration, and ran into what may or may not be an issue. According to the service manual, when filling the transfer case and reduction unit, it states to fill the reduction unit first, "THEN" the transfer case. My issue is, when filling the reduction unit, I noticed the fluid leaking down and out the transfer case fill hole. I had taken the assembly, still connected to the th400, to a dedicated trans shop about a year ago, where they went through it all. My question is, is there a seal between the reduction unit and transfer case?? Otherwise, what would be the point of filling one before the other? Thanks for anyone's time and assistance with this. Jeff
If memory serves (it's been a while), the rear of the housing is enclosed with a large drain hole about half way up. This traps the fluid in the reduction unit/coupler and bearing. Overfilling the reduction unit will simply drain the excess fluid down into the main housing.
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