WHAT TO SAMPLE
5-1. AOAP participants will use this technical bulletin as the source reference for equipment
components required to have lubricant samples analyzed in oil analysis laboratories. Refer to
5-2. PM AOAP, will maintain a listing of enrolled equipment on the Internet at:
https://weblog.logsa.army.mil/index.shtml. At the WebLog index, select AOAP Air Equipment
or AOAP Ground Equipment in the Maintenance Management window.
5-3. The hydraulic fluid in sealed recoil mechanism/gun mounts on combat equipment is NOT
to be sampled.
5-4. Reserve and National Guard equipment not operated for 180 days or more will be
considered in a temporary inactive status. This equipment will not be sampled until removed for
use. At that time, a sample will be taken and then normal AOAP sampling intervals will apply. A
sample will also be taken before equipment is put back in an inactive status.
5-5. Warranty Items. For equipment under manufacturer's warranty, the schedule for oil
service outlined in the warranty agreement will be complied with. However, if the laboratory
recommends an oil change, the recommendation should be followed. The organization will also
change oil at the appropriate hard time interval in order to keep the warranty valid. If the
laboratory recommends that a warranty component have maintenance performed, the AOAP
monitor will report the information to the supporting warranty control office and comply with
the course of action outlined by that office.
5-6. Equipment in storage or has very low usage.
a. While equipment is in storage or has very low usage, no sampling is required. A sample
must be taken before the equipment goes into storage and when it is scheduled to return to
operational use. Equipment with very low usage/OPTEMPO, such as those stored at equipment
concentration sites, are not required to be sampled. Low usage is defined in DA Pam 738-750
and DA Pam 738-751, under Administrative Storage.
b. Army prepositioned stock (APS) materiel. Refer to TM 38-470 for instructions as to what
APS stored materiel will have AOAP oil samples taken and tested.
c. When equipment is used as a development item, a training aid, or as a static display,
authorization to discontinue AOAP sampling or to sample at longer intervals may be granted by
the appropriate major command. One copy of the written authorization should be submitted to
PM AOAP.
d. Source oil. AOAP laboratories may request a sample of the source lubricant or new
lubricant used to service the component under test, to verify the source lubricant is not the cause
for abnormalities detected in test findings.
