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Lubrication & Maint./2000 Hour/24 Month
OURGP11,0000081 –19–27JUL06–2/4
RG8019A –UN–19JUN00
Engine Block Drain Valve- Except 475 Engines
RG12223 –UN–11JUN02
Engine Block Coolant Drain Plug- 475 Engines
A—Engine Block Drain Valve
B—Engine Block Drain Plug
C—Engine Block Drain Plug
3. All Except 4045HF475 and 6068HF475 Engines:
Open engine block drain valve (A) on left side of
engine. Drain all coolant from engine block.
NOTE: On earlier “475” engines, the engine block drain
valve is located behind the fuel rail, and is not
easily accessible.
4045HF475 and 6068HF475 Engines: Open drain
plug (B) or (C) on oil cooler housing. Drain all coolant
from engine block.
NOTE: These engines use several different oil filter
adapters. Use either drain plug (B) or (C) to drain
coolant, whichever is more accessible for the oil
filter adapter on your engine.
4. Open radiator drain valve. Drain all coolant from
radiator.
5. Remove thermostats at this time, if not previously
done. Install cover (without thermostats) using old
gasket and tighten cap screws to 47 N•m (35 lb-ft).
6. Test thermostat opening temperature. (See Inspecting
Thermostats And Testing Opening Temperature in
Service As Required Section.)
7. Close all drain valves after coolant has drained.
CAUTION: Do not run engine longer than 10
minutes. Doing so may cause engine to
overheat which may cause burns when radiator
water is draining.
8. Fill the cooling system with clean water. Run the
engine about 10 minutes to stir up possible rust or
sediment.
9. Stop engine, pull off lower radiator hose and remove
radiator cap. Immediately drain the water from system
before rust and sediment settle.
35-4
080706
PN=162
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