Just need to know were the water pump on montero sport 1998 3.0 Ls engine????

It's under the timing cover on the front of the engine. I have pasted autozone.com instructions to replace the water pump below.

3.0L & 3.5L Engines

1. Before servicing the vehicle, refer to the Precautions section.
2. If necessary, properly release the fuel pressure.
3. Drain the cooling system.
4. Remove or disconnect the following:
   
   Negative battery cable
   

1. Clean and dry the mating surfaces of the block and water pump
2. Install or connect the following:
   
   New O-ring on the water pipe connection, wet the new O-ring with water to aid in installation Water pump, with a new gasket, Torque the bolts to 17 ft. lbs. (23 Nm) on 3.0L and 3.5L engines Alternator bracket bolt to 17 ft. lbs. (23 Nm) Timing belt(s) and covers Crankshaft pulley(s) Thermostat and housing on 3.0L, 3.5L engines. Torque the bolts to 12-14 ft. lbs. (17-20 Nm). Radiator hose to the water pump Water outlet, new gasket and houses. Torque the bolts to 12-14 ft. lbs. (17-20 Nm). Water pump pulley Cooling fan and clutch assembly Air conditioning compressor tensioner pulley, if equipped Accessory belts Upper radiator shroud Thermostat and housing on 3.0L, 3.5L engines Negative battery cable
   
3. Refill the radiator with coolant. This cooling system has a self-bleeding thermostat, so system bleeding is not required.
4. Run the vehicle until the thermostat opens and fill the overflow tank. Check for leaks.
5. Once the vehicle has cooled, recheck the coolant level.