TM 5-2420-230-24-1
(b)
Crankcase. Check oil level with vehicle parked on level ground and the engine off and cool. Do not overfill.
(c)
Army Oil Analysis Program (AOAP). Refer to TB 43-0211 for sampling requirements. Refer to
TM 5-2420-230-10 for additional information regarding the AOAP for the IHMEE.
After expiration of warranty, active Army units will send an engine oil sample to an AOAP laboratory for
analysis every 100 hours of operation or 90 days, whichever occurs first. Reserve and National Guard units
will send an oil sample to an AOAP laboratory for analysis every 100 hours of operation or 180 days,
whichever occurs first.
Intervals for sampling as well as draining and refilling lubricants may be changed by an AOAP laboratory.
If AOAP laboratory support is not available, drain and refill crankcase oil every 3,000 mi. (4 800 km) or
every 6 months, whichever comes first, and drain and refill transmission oil every 6,000 mi. (9 600 km) or
annually, whichever comes first. Drain and refill hydraulic reservoir every 6,000 mi. (9 600 km) or annually,
whichever comes first.
After the engine's initial warranty period, crankcase oil will be changed only when directed by an oil
1
analysis laboratory. When AOAP laboratory support is not available, change oil and filter element(s) at
prescribed hardtime intervals, 3,000 mi. (4 800 km) or 6 months, whichever occurs first.
After the transmission's initial warranty period, transmission oil will be sampled every six months, 500
2
hours of operation or 1,000 mi. (1 600 km), whichever occurs first. Reserve and National Guard units
will sample every 180 days or 1,000 mi. (1 600 km), whichever occurs first. Transmission oil will be
changed only when directed by an oil analysis laboratory. When AOAP laboratory support is not
available, change oil each 6,000 mi. (9 600 km) or 12 months, whichever occurs first.
Hydraulic reservoir oil will be sampled every 12 months. Oil will be changed only when directed by an
3
oil analysis laboratory. When AOAP laboratory support is not available, change oil every 6,000 mi.
(9 600 km) or 12 months, whichever occurs first.
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