TM 5-4310-343-35
Trouble
Probable Cause
Remedy
High interstage pres-
Heads improperly posi-
Position head in proper
sure.
tioned.
position. Refer to "in"
and "out" markings on
head.
Clogged intercoolers.
Clean or replace faulty
component.
Sticking intake or
Clean and if necessary,
discharge valve. For-
re-lap valve and seating
eign matter between in-
surface.
take valve and seating
surface. Intake or
discharge valves im-
properly lapped.
Incorrect heed clearance
Check and adjust head
or valve travel.
clearances and valve
travel.
Excessive blow-by.
Rings, cylinders,
Measure blow-by at the
plungers, or pistons
port (138, Fig. 6-1)
worn or scored or in-
located at the bottom
correctly assembled, or
of the drive mounting
poor fit of parts.
flange of the crankcase.
4-5
