Section II. MAINTENANCE PROCEDURES
6-3. ENGINE ASSEMBLY MAINTENANCE INSTRUCTIONS
This task includes.
a. Run-ln Test.
Tool Kit, General Mechanic's
Stand, Engine: Item 45, Appx F
General Safety Instructions
Observe all WARNINGS and CAUTIONS
Oil, Lubricating; item 6, Appx E
Fuel Oil, Diesel, item 3, Appx E
Element, Air Cleaner (1)
During test run observe and check the following:
Check for proper function.
An engine that has been repaired to include ma-
jor component replacement, including; piston as-
Check for unusual noise.
sembly, cylinder, connecting rod, crankshaft,
Check for leakages.
ing), and gear cover, a run-in test is necessary to
determine engine performance.
Check rpm output at idle speed, normal
speeds should be 900 - 1100 rpm.
Mount engine in an engine stand, in accordance
with instructions of tester.
Check rpm output at full load speed, normal
full load speed is 2850 rpm.
Service the engine with normal lubricating oil
Check exhaust gas temperature, maximum
exhaust temperature is 1000°F (550°C).
Check lubrication oil temperature, maximum
oil temperature is 250°F (120°C).
Operate the engine on the engine stand per the
Check lubrication oil pressure and record.
Maximum oil pressure is 58 psi (4.0 bar) at
Engine at idle speed, no load for 10 minutes.
Minimum oil pressure is 26 psi (1.8 bar) at
Engine at half speed, half load for 10 minutes.
Engine at full speed, full load for 20 minutes.
Engine at idle speed for 2 minutes.