Transmission help

[c10_69]

Hey everyone I have a 69 k10 4 speed manual was wondering how to check the transfer case fluid and transmission fluid and is there a filter for transmission?
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[Greasey Harley]

No filter.
There is a square head plug on the driver side of the transmission, about 1/3 of the way up. that is the "Level/Fill" plug. You remove that plug and the oil level is supposed to be at the bottom of that hole. To add oil, pump the gear oil into the hole until it's up to that level.
The drain plug is the same kind of plug, it's just on the bottom of the gear box.
Transfer case fills up the same way. Rockwell or New Process there is a "Drain plug" on the bottom and a "Level/Fill" plug up on the side.

This is a 2wd trans, but it's the same thing:

Sorry about the fuzzy pic. Hope this helps.
-Russ.