* Visual Inspection (for leaks): Carefully inspect the transmission for any leaks. Look for wet spots, drips, or fluid trails around the transmission case, especially around the seals and output shaft. This won't tell you the fluid *level*, but it will alert you to a potential problem.
* Fluid Condition (during service): The best way to assess the transmission fluid is during a service. This involves draining some of the fluid from the drain plug at the bottom of the transmission. The color and condition of the fluid removed will indicate its state. Dark, burnt smelling fluid indicates it needs to be changed. While draining, you can also get a sense of the quantity that's coming out. If little to no fluid comes out, your transmission may be very low.
* Indirect Assessment (experienced mechanic only): A very experienced mechanic *might* be able to estimate the fluid level by feeling the transmission case for unusual warmth or by listening for unusual noises, but this is unreliable and not recommended for the average person.
In short: You can't easily check the transmission fluid level in a 1987 Jeep Cherokee manual transmission like you would in an automatic. The best approach is regular maintenance and fluid changes based on the vehicle's service schedule or if you notice any leaks or unusual transmission behavior. If you're concerned about the fluid level, consult a qualified mechanic.
