Chevrolet 30 Series 1967 Service Manual page 323

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rig . 2 —Replacing Thermostat-
Water Pump
Removal
1. Drain radiator and break loose the fan pulley bolts.
2. Disconnect heater hose, lower radiator hose and
by pass hose (as required) at water pump.
3. Loosen Delcotron and remove fan belt then remove
fan bolts, fan and pulley.
4. Remove pump to cylinder block bolts and remove
pump from engine.
NOTE: On in line engines, pull the pump
straight out of the block first, to avoid damage
to impeller.
Installation
1. Install pump assembly on cylinder block and tighten
bolts securely. Use on new pump to block gasket(s).
2. Install pump pulley and fan on pump hub and tighten
bolts securely.
NOTE: A guide stud (5/16"-24 x 1 -1 /2 " bolt
with the head removed) installed in one hole of
the fan hub will aid in aligning hub, pulley and
fan. Remove stud after starting the remaining
three bolts.
3. Connect hoses and fill cooling system,
, ,, ,
4. Install fan belt and adjust as previously outlined.
5. Start engine and check for leaks.
ENGINE COOLING 6K-3
CHEVROLET TRUCK SERVICE MANUAL