1989 Ford Explorer stuck in albany belt came off

I did not see any information if it is a 4.0L or 5.0L.

This is for the 4.0L (6 cyl.)

This is for a (5.0L) 302 CU. IN. 8 cyl.

There is also a belt routing diagram near the hood latch under the hood.

YOU WILL NEED TO USE A 15MM or 16MM socket with ratchet on the "TENSIONER" TO MAKE IT MOVE SO YOU CAN THE GET THE BELT COMPLETELY ON. >>PULL UP ON THE RATCHET OR PUSH DOWN << IT WILL MOVE IN ONE DIRECTION OR THE OTHER, IT IS "SPRING LOADED". THE TENSIONER PUTS CONSTANT PRESSURE ON THE BELT TO ACTUALLY KEEP THE BELT IN PLACE AND APPLY THE CORRECT TENSION THE COMPONENTS REQUIRE. MAKE SURE YOUR BELT "TENSIONER" IS GOOD AND IT SPRING BACK WHEN YOU RELEASE IT. IF IT DON'T YOUR TENSIONER IS NO GOOD AND "ABSOLUTELY" NEEDS TO BE REPLACED. IF NOT YOU WILL BE REPLACING THE BELT EVERY 5 MINUTES IF YOU ARE LUCKY.
THE BELT DID NOT COME OFF THE PULLEYS FOR "NO" REASON, SOMETHING IS NOT RIGHT SOMEWHERE.
Good Luck;
Rick