Service Manual

Engine Testing (Engine Dynamometer) ISB, ISBe and QSB (Common Rail [...]
Page 14-12 Section 14 - Engine Testing - Group 14
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Fill the cooling system with coolant to the bottom of the fill
neck in the radiator fill (or expansion) tank. Refer to
Procedure 008-018
Inspect the engine for coolant leaks at connections,
fittings, plates, and plugs. Repair as needed. Refer to
Procedure 008-020 if any leaks are found.
Measure the coolant pressure at a coolant tap on the
exhaust side of the cylinder head.
Minimum Gauge Capacity: 415 kPa [ 60 psi ]
Open
Thermostat
rpm Location on
Engine
Pressure
2000 Water outlet 17.2 kPa [2.5 psi]
2000 1/2-NPT head
port
68.9 kPa [10.0
psi]
2000 3/4-NPT head
port
82.7 kPa [12.0
psi]
2500 Water outlet 24.1 kPa [3.5 psi]
2500 1/2-NPT head
port
99.9 kPa [14.5
psi]
2500 3/4-NPT head
port
117.2 kPa [17.0
psi]