V belt broke rapped around crank pully broke sencer wont crank

HAVE YOU CHECKED FOR SPARK?

Does it have spark at the spark plug's ?

Check if you are getting spark .

did you know how to replace timing belt it has to be installed in a specified way or it wont start
if it broke and you replaced it then the story is different as if it breaks while running usually it also bends your valves you should see a technician for this

ok I do not know what the cofigure is on your jeep but let me explain how it works and then you may be able to put it on. First look at the pulleys and see witch ones are smooth and witch ones have lines. smooth pulleys match to the smooth side of the belt ridgid side matches with ridgid side of belt. next I will tell you a rule to most serentine belts. Your crankshaft pully is the main drive so the belt will rap around almost 3/4ths the way around the pulley. All driven pulleys witch are the ones the run the water pump, altenator, compresor, and power steering rap around 3/5ths around the pulleys then you have the tentioner witch will apply pressure down on the belt so make shure the belt is under the pressure side. You can put a 3/8th ratchet in the tentioner to move it. if you still have pulleys that I have not covered they are their to complete the right amount of rap on the driven pulleys. The main thing to look at is if its smooth then put the smooth side of the belt on that pulley. If this did not help just coment back and I can get the book out tommorrow when I go to the shop and email you a copy of the diagram

First verify that the belt is on correctly. If the belt is around the water pump the wrong way it will spin the water pump backward and not correctly circulate the coolant causing it to overheat. When you drove it without the belt did you overheat the motor?How quickly does it overheat? Does thermostat ever open?

There is a DOHC or SOHC (double or Single overhead cam engone. Both are Similar. Both have a notch on back side of crank pully that aligns with a tab on engine just above crank pully looks like a triangle with the tip near crank pully is rounded off. SOHC engines have an arrow on cam pully that aligns with a point at top of timing belt rear housing. about straight up at top of it. DOHC have an I and an E on the cam pullys I for INTAKE and E for EXHAUST. the I and E match up at same type points on top of rear Timing belt housing. When installing belt make sure you do not move pullys. put belt on starting with cam shaft (s) then down to crank on tension side which looking at motor will be the right side or Clockwise direction keeping it tight no, or EXTREEMLY little slack. then back up around tensioner. Tensioner should be the last pully to go around. Once on make sure timing marks still lline up.Adjust tensioner and. rotate engine BY HAND 4 times and re check marks.

He may have accidently knocked some wires loose during the install or when your belt flew off the pullies it hit some wires and broke them. Check for wire damage around the pullies.

depends on which v8 you have....the 4.7 the routing is as follows it goes under the waterpump pully over the alternator down and around the power steering pumpto the crank...it goes under the bottom of the crank to the idler pully.the flat side of the belt goes ver the idler then around the automatic tensioner to the ac compressor.
on the 5.2 and 5.9 it routes starting at the idler pully the flat side goes undr the idler the up to the ac compressor around the compressor and down to the power steering pump ... around power stering pump to waterpump where the flat side is against waterpump pully around water pump down and around crank up it automatic tensioner....around tensioner and up and over alternator