Sometimes it's possible to change the big end bearings by pulling the sump off. But to get to the small end you need to get the pistons out. And if you're pulling the sump, and the head(s) you might as well get the motor out first as it'll probably be faster.
Yes, you do not have to remove the engine.
It is impossible to do it you have to pull the engine
I don't believe you can because the oil pan on vans are double sump pans and there wouldn't be anyway to get the pan out of the way because of the crossmember.
Can the oil pump be replaced on 1994 Ford Ranger 4.0 without pulling motor?
Remove the trasnsmission and you can then replace the seal.
change the blower motor the bearings have gone bad in it
Noisy operation of a motor is usually caused by the motor's bearings. Use an instrument that can check the temperature of the bearings. If they are hotter than the surrounding temperature of the motor's frame then change them out for new ones. New bearings should quiet the motor.
NO THEY ARE NOT.
Clean out the Throttle Body, Clean and or Replace the air intake filter, Change oil to a synthetic motor oil, Change the Main Bearings camshaft bearings. Install After Market Parts. Replace all Seals and Gaskets in the motor. Remove unnecessary weight.
1) clean the ball-bearings 2) change the capacitor 3) clean the blades 4) lubricate the ball-bearings that will do the job, if not then there is problem with the motor.
No way, one are the other has to be taken out to repair.
There are many different motors and engines and each one has many different bearings. Need to be more specific.