TM 5-3805-280-24-2
Air Intake and Exhaust System Operation and Tests
DIAGNOSING AIR INTAKE MALFUNCTIONS
110
3
Symptom
Problem
Solution
Engine Starts Hard or Won't Start
Air leak on suction side of system.
Check hose and pipe connections
for tightness; repair as required.
(See Group 30.)
Erratic Engine Operation
Air leak on suction side of system.
Check hose and pipe connections
for tightness; repair as required.
(See Group 30.)
Engine Emits Excessive Black
Air cleaner element restricted.
Clean or replace elements. (See
Smoke
operator's manual.)
Turbocharger defective.
Repair or replace. (See Group 30.)
Air leak in manifold.
Check hose and pipe connections
for tightness; repair as required.
(See Group 30.)
Engine Idles Poorly
Air leak on suction side of system.
Check hose and pipe connections
for tightness; repair as required.
(See Group 30.)
Engine Does Not Develop Full
Air cleaner restricted.
Clean or replace elements. (See
Power
operator's manual.)
Air leak on suction side of system.
Check hose and pipe connections
for tightness; repair as required.
(See Group 30.)
Turbocharger defective.
Repair or replace. (See Group 30.)
Manifold pressure pipe to aneroid
Check hose and pipe connections
loose or broken.
for tightness; repair as required.
(See Group 30.)
Turbocharger "Screams"
Air leak in manifold.
Check intake manifold gasket and
manifold; repair as required. (See
Group 30.)
RG,110,JW7674 1924NOV971/1
13-509