There should be a plug on the side of the transfer case about half way up the side. Take the plug out. If oil comes out... it's full!
quickly!
Unless it has a sealed for life transmission, you put fluid down the dipstick, where you check the fluid level.
No
The 1974 model 203 transfer case has a fluid capacity of 5.5 quarts. You can check the fluid level from the same hole that you fill the transfer case.
The fill plug is on the left side of the transfer case. You remove the fill plug, and the fluid should come to the bottom of the fill plug.
You will see 2 plugs on transfer case, the lower is to drain, upper is to fill or check level
you should have 2 dipsticks. 1 for oil and 1 for tranny fluid. the tranny fluid dipstick is going to be the one in the back of the engine compartment. if you have to add some. use "dot 3 tranny fluid" and a funnel. check the fluid level with a warmed up tranny and while the eng in idling to get a proper level reading
Some people have reported a clicking noise in the transfer case when it's low on fluid, so check the level. If the level is fine, use a screen to drain the fluid through and watch for metal flakes. If you find them, the transfer case would need to be rebuilt.
Check your rear U-Joint, plus the fluid level in your rear end. Also on my Aerostar, in my brake assembly I found a broken brake spring. If it is the gears in the rear-end you may have to replace. Good luck!
on the rear of the case there is a fluid fill line next to the fill bolt. Remove fill bolt and stick your finger in.
You gotta take out the fill plug. Check the fill plug to see if any metal shavings are on it, the fluid level should be to the bottom of the fill plug. If you're taking an oil sample, a fluid transfer pump or siphon hose should do.
On the back of the case there are two plugs that take a 10mm Allen wrench to remove. The top of the two is the fill plug, fluid should be level with the bottom of the hole.