MAINTENANCE OF THE M113 PER CARRIER - OD1601 LESSON 2/TASK 1
d. Inspection and Road Test.
The driver of the carrier is often unaware of
defects that have developed gradually in the carrier.
It is therefore desirable
for unit maintenance personnel to road test the carrier as part of the quarterly
PMCS following the procedures below:
(1) Visually inspect the inside and outside of the carrier for evidence of fuel
or oil leaks. Correct any deficiencies noted.
(2) Replace decals, instruction plates, and stencil markings that are not
Clean and paint bare spots in the painted surface that might permit
(3) Check carrier DA Form 2408-5 to determine if all modifications have been
accomplished. A current list of MWO's is contained in DA Pam 310-7.
(4) After all services and inspections have been completed, take the carrier on a
short road test to ensure correction of operational deficiencies.
attention to those items that were initially defective.
During and after the road test of the carrier, any repairs or adjustments necessary
to ensure safe operation should be made.
Any defects of an item that do not
require immediate correction should be noted on DA Form 2404.
The defect should be corrected later during the after-road-test services. When the
tactical situation does not permit a complete road test, perform only those checks
that require little or no movement of the carrier.
When a road test can be
performed, the distance should be approximately three, but not over five miles.
When conditions prevent a road test, apply the parking brake, and perform the
following engine idle test and governed no-load test.
e. Idle Test. Run the engine until normal operating temperature is reached. With
the transmission in neutral, the engine should idle smoothly at 650 to 700 rpm.
High or low engine idle speed is usually caused by throttle linkage being out of
Rough engine idling usually results from faulty injector timing and
rack setting, defective fuel injectors, or air in the injection system.