TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Test or Inspection
9. ENGINE OIL LOSS
a. Inspect air compressor output for engine oil. If OK,
do Step 2.
High blowby forcing oil out breather.
a. Inspect breather tube area for signs of oil loss. If
OK, do Step 3.
b. Measure blowby. Connect open straight port of engine
blowby tool (3375788) to crank case breather tube.
Connect water manometer to 90 port of engine blowby
tool and measure blowby with engine running at rated
speed. Maximum blowby 18 inches of water (226
c. Perform required repairs.
Turbocharger leaking oil to the air intake or exhaust.
a. Inspect turbocharger inlet and outlet for evidence of
oil transfer. If OK, do Step 4.
Worn valve seals.
a. Inspect valve seals for wear.