Section IV. ENGINE EXHAUST SYSTEMS

TM 5-3835-222-BD

Personnel/Time

Required:

1 soldier - 30 minutes

Materials/Tools:

Blanket or Shirt

Tape, Duct (appendix C, section II item 40) Or Tape, Electrical (appendix C, section II, Item 41)

Procedural Steps:

a. Disconnect the air hose at the attachment to the engine.

b. Cover the air inlet with a clean cloth (such as a shirt or blanket). Clean the cloth whenever

It gets dirty.

c. Anchor the cloth tightly to the air intake with a hose clamp or wire, otherwise the strong vacuum

will suck the cloth into the engine.

Other Options:

Bypass or eliminate air cleaner.

Record the BDAR action taken. When the mission is completed, as soon as practicable, repair the

equipment using standard maintenance procedures.

4-12. Intake Manifold Or Other Castings Or Containers Damaged. Intake manifolds are difficult

to repair. Autobody fillers, epoxies or gasket sealers can seal cracks. Holes will require welding

because of irregular surfaces. Tape will provide a temporary seal on unpressurized air intake portions

but has minimal value for pressurized systems without metal or wire reinforcement. Epoxy kits

will make an almost permanent repair, if time is available for curing. Follow the individual kit directions.

Section IV. ENGINE EXHAUST SYSTEMS

WARNING

This can cause personal injury or possibly even death. Care must be

taken, to keep carbon monoxide away from the operator.

4-13. The engine exhaust system consists of the exhaust manifold, muffler and pipes to

route the gases to the muffler and out of the vehicle. Turbocharged engines have the exhaust gases

routed through the turbocharger to drive the vanes. Damage to the muffler or pipes, not including

the ducting for the turbocharger drive circuit, are inconvenient, but the equipment can still be

operated. Turbocharger drive circuits must be repaired or engine performance will be degraded.

CAUTION

Continued engine operation with damaged exhaust manifolds may set

the fuel lines on fire.

4-14. Exhaust Manifolds Damaged. Damaged manifolds are indicated by loud noises. Any damage

to the exhaust manifolds upstream of the turbocharger will degrade engine operation.

Personnel/Time Required:

1 soldier - 15 - 30 minutes

4-5