PREVENTIVE MAINTENANCE CHECKS AND SERVICES Continued
Service Intervals Normal Conditions
For safer, more trouble-free operation, see to it that your carrier is serviced when it needs it.
Service Intervals Unusual Conditions
Your carrier will often need extra service and care when you operate under unusual conditions. High or low temperatures,
long periods of hard use, continued use in sand, water, mud, or snow, will break down the lubricant. Then you have to add or
change lubricant more often. But during periods when the carrier is not used, the service intervals can be stretched out.
ARMY OIL ANALYSIS PROGRAM (AOAP)
Park carrier on level ground to check oil levels. Clean fittings with cleaning compound. Dry
before lubricating. Check/lubricate all oil and grease fitting points after washing or fording.
AOAP is an effective maintenance diagnostic tool and not a maintenance substitute. TB 43-106 and TM 9-2300-422-23&P
must not be interpreted to mean that AOAP minimizes in any way the need to employ good maintenance practices and strong
Samples may be taken without warming a component to operating temperature if the equipment has been operated within the
last 30 days. If the equipment has not been operated within the last 30 days, these requisites apply to both routine and special
sampling. Several hours of operation are needed to completely mix old and new oils.
Perform AFTER operation checks and services.
DO NOT ADD OIL immediately prior to taking oil samples. When AFTER operation checks
and services indicate the need to replenish oil levels, WAIT until after taking samples. New oil
added immediately prior to taking samples will adversely effect oil analysis results.
Obtain two sample bottles (NSN 8125010829697) and two DA Form 2026 from the unit AOAP monitor.
Start engine (WP 0013 00), (WP 0014 00). If required (see Sampling Requirements above), drive carrier (WP 0020 00),
(WP 0021 00) to bring engine and transmission up to normal operating temperatures.
Stop carrier and set the brakes (WP 0012 00).
Place range selector in the N (Neutral) position and keep engine running. On M548A3, lock the steering wheel (WP 0004 00).
Raise crew seat and center floor plate (WP 0077 00).
With engine operating, remove dust caps from the engine and transmission oil sampling valves (WP 0002 00).