TM 10-5410-228-10
3.2
LUBRICATION INTERVALS.
Intervals (on-condition or hard time) and the related man-hour times are based on normal operation. The
man-hour time specified is the time you need to do all the services prescribed for a particular interval. On-
condition (OC) oil sample intervals shall be applied unless changed by the Army Oil Analysis Program
(AOAP) laboratory. Change the hard time interval if your lubricants are contaminated or if you are
operating the equipment under adverse operating conditions, including longer than usual operating hours.
The hard time interval may be extended during periods of low activity. If extended, adequate preservation
precautions must be taken. Hard time intervals will be applied in the event AOAP laboratory support is not
available.
3.3
MAINTENANCE LEVELS.
The lowest level of maintenance authorized to lubricate a part is indicated by one of the following symbols as
appropriate: Operator/Crew (C); Unit Level (O); Direct Support (F).
3.4
LUBRICATION PROCEDURES.
Dry cleaning fluid is flammable. Do not use near a flame or excessive heat. Use only in
adequate ventilation. Avoid prolonged breathing of vapors and minimize skin contact.
a. Clean parts with dry cleaning solvent (SD), Type II or equivalent. Dry before lubricating.
b. Lubricate part, being careful not to over lubricate. Wipe any excess lubricant from part.
c.
Lubricate all items found contaminated after washing.
3.5
FILTER.
a. Hydraulic Filter. Hydraulic oil filter shall be changed if:
Filter is known to be contaminated or clogged,
Filter has been operational for 500 hours,
AOAP laboratory analysis dictates need for change, or
Rear Control Panel indicator is illuminated, which indicates filter element differential pressure has
reached the limit of 30 psig.
3.6
AOAP SAMPLING INTERVAL.
a. Hydraulic Fluid. The hydraulic fluid shall be sampled every 200 hours of operation or 60 days
(whichever comes first) per TB 43-0106.
b. Air Conditioner Compressor Oil. The compressor oil shall be sampled only when it is suspected that
it has become contaminated due to a refrigeration system component failure or the refrigeration
system was allowed to remain open to atmospheric ambient.
3.7
NOTES.
1. ARMY OIL ANALYSIS PROGRAM (AOAP). Obtain samples from hydraulic fluid reservoir every 200
hours of operation. Send samples to the nearest AOAP laboratory. Refer to MIL-STD-105. If AOAP
laboratory support is not available, hard time intervals will apply.
NOTE
Do not hold oil samples. Submit oil samples as soon as they have been taken.
Seasonal oil changes will be made due to expected temperatures.
2. FOR OPERATION OF EQUIPMENT IN PROTRACTED COLD TEMPERATURES BELOW -15F. Refer
to FM 9-207.
3. HYDRAULIC FLUID LEVEL. Fluid level varies with temperature. Do not overfill. When filling the
hydraulic reservoir, do not fill past the appropriate mark: COLD when system has not been running or has
been running for less than 20 minutes; HOT when system has been running for more than 20 minutes. If
3-2
