On the 1989 and later models with E07A engine the water pump is driven by the timing belt. Set engine to TDC on #1 cylinder Remove alternator belt cover Remove dip stick tube bolt Rotate dip stick to the left(don't remove tube) Jack engine up slightly Remove engine side mount bolt and side mount and bracket Remove other alternator belt cover and belt Remove crank pulley and fan Remove valve cover and lower cover Loosen timing belt adjustment bolt 1/6 turn Slide off timing belt Remove timing belt idler Remove back cover Remove water pump bolts and pump Install new pump and O-ring and back cover torque bolts to 87 inch pounds Idler pulley 32 foot pounds Install new timing belt Adjustment bolt 32 foot pounds Install lower cover 6mm bolts 87 inch pounds Crank pulley 69 foot pounds using holding tool Pulley fan 87 inch pounds Alternator belt Verify timing marks line up Adjust valves Install remaining covers and side mount in reverse order of removal
To OldMachinist, Thanks for all your knowledge on the Honda trucks. Having trouble with my 96 or 98 not sure what year. Radiator fan quit working checked fuses all good, put voltage to fan motor fan worked. Shorted sensor fan worked got new sensor fan didn't work, shorted sensor fan worked. Tested old sensor it tested good. Water in radiator does not get hot water in engine block gets hot, its got to be the water pump right?????
Could also be air trapped in the system. There's a bleed fitting on the metal pipes to the radiator to remove the air.
