Q: How to remove and install Timing Chain on Ford Bronco II?
A: To service the 2.2L Diesel Engine, first bring the engine to No. 1 piston at TDC on the compression stroke, then disconnect the ground cables from the batteries and drain the cooling system, ensuring to use a sealable container for the coolant to prevent harm to pets. Next, remove the radiator fan shroud and cooling fan, and drain the engine oil from the crankcase while wearing protective gloves to minimize exposure to used oil. Loosen the idler pulley to remove the NC compressor belt and the power steering belt, then take out the power steering pump and mounting bracket. Continue by loosening and removing the alternator and vacuum pump drive belts, followed by the water pump and crankshaft pulley using a suitable puller. Remove the timing case cover by taking out the retaining nuts and bolts, and installation is the reverse of removal. For the 2.8L and 2.9L engines, start by removing the oil pan and draining the coolant, again using a sealable container. Remove the radiator, NC compressor, and power steering bracket without disconnecting the refrigerant lines, then take out the alternator, Thermactor pump, and drive belts, followed by the fan, water pump, and hoses. Remove the drive pulley from the crankshaft and the front cover retaining bolts, tapping lightly if necessary to break the gasket seal. If the front cover oil seal needs replacement, support the cover while driving out the old seal and install a new one coated with Lubriplate®. Clean the mating surfaces, apply sealer, and install the front cover with the gasket, ensuring proper alignment and torque specifications. Finally, reinstall the oil pan, water pump, hoses, NC compressor, alternator, and drive belts, adjusting tension as needed, then fill and bleed the cooling system, operating the engine to check for leaks. For the 4.0L engine, disconnect the negative battery cable, remove the oil pan, and drain the cooling system while following the same precautions for coolant disposal. Remove the air conditioning compressor and power steering pump without disconnecting the lines, then take out the alternator, fan, water pump, drive pulley/damper, and crankshaft timing sensor. After removing the front cover, reinstall it along with the timing sensor, drive pulley/damper, water pump, fan, alternator, and power steering pump. Fill the cooling system, install the oil pan, fill the crankcase, reconnect the battery, start the engine, and check for leaks while road testing the vehicle for proper operation.