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Old 06-12-2018, 04:59 AM   #21
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Join Date: Nov 2016
Location: OR
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Vehicle: '90 D21 4cyl 5spd 2wd
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As stated earlier the water pump is really easy to change on these. Once you get the fan and the pulley off there are 5 identical 12mm bolts holding the pump to the timing cover. A few tips you might find helpful:

Loosen the 4 nuts holding the fan clutch on before undoing the accessory belt. It'll make it easier to hold the pulley still while you break torque.

If everything is still factory the water pump and thermostat housing will be sealed with RTV instead of an actual gasket. Make sure to get the mating surface nice and clean or it'll leak afterwards. Aftermarket gaskets are the way to go IMHO.

Might as well do the thermostat too while you're at in there; it's right next door.
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