6B-2 - CLOSED COOLING MODELS 90-823225--1 1096
Water Flow Diagrams
Engines With Coolant Flow Thru Exhaust Manifolds (Excluding Gen +)
72989
Typical Thermostat and Thermostat Housing Shown (All Similar)
a
a
a
a
b
b
c
c
a
b
RAW WATER FLOW
COOLANT FLOW
a - Remove Hoses (Lift, Lower or Bend To Completely Drain)
b - Remove Block Plugs (Repeatedly Clean Out Holes Using A Stiff Wire Until Entire System Is Drained)
c - Remove Drain Plugs From Exhaust Exhaust Manifold Drain Elbows (Repeatedly Clean Out Holes Using A Stiff Wire Until Entire
System Is Drained)
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