I am sorry that I did not see this question posted earlier. I would like to try to help you. You must have a 751 loader. I believe that was the only Bobcat loader model that had a Peugeot engine.
Be sure to pin the injection pump and cam shaft gears using two metric bolts,(bobcat tool MEL 1484) to hold them in position. They should be able to be pinned at the same time as the flywheel, if not, turn the crank 1 more full revolution to get all three pins to align. Be sure the crank shaft does not move once they are pinned, and the belt is removed. When installing the new belt, it is very important to keep the belt free of slack between the gears, in the following order: Crankshaft gear, Fixed Roller, pump gear, Cam shaft gear, tensioner pulley, and coolant pump.
If this is done, all timing will be correct. If you still feel resistance when turning the engine by hand, verify proper valve tappet to cam lobe clearance. Cam flat to tappet clearance should be 0.006" +/- 0.0016 on intake valves, and 0.012" +/- 0.0016" on exhaust valves. Your service manual should illustrate this as well.
If all the above checks correct, you could be feeling the compression when trying to turn the engine, or if it becomes very solid feeling, and not springy feeling, you will have to pull the head to see what is binding inside the combustion chamber of one of the cylinders.
Follow all Safety and Maintenance Procedures as illustrated in the Operation and Maintenance Manuals for your machine! Remember to click ACCEPT.