TM 5-2420-230-24-1
Table 3-1. Unit Level Preventive Maintenance Checks and Services (PMCS) for IHMEE. -- Continued
Item to be
Item
Checked or
Not Fully Mission
No.
Interval
Serviced
Procedure
Capable If:
21
Annual
Air Intake System
a. Inspect air cleaner, hoses, and tubing for Improper installation,
proper installation, cracks, breaks, or loose cracks, breaks, or loose
connections that could let unfiltered air get connections are evident.
into air system.
b. Replace air filter element (Para 13-27.1).
22
Annual
Power Steering Oil
Replace power steering oil filter (Para 5-5).
Filter
23
Annual
Air System
NOTE
In areas where it is common for the
temperature to range by approximately
30 F (17 C), small amounts of water can
accumulate in the air system due to
condensation. The presence of small
amounts of condensation is normal.
a. Check air compressor and air governor for Looseness of mounting
hardware.
loose mounting.
Dents, cracks, excessive
b. Inspect air drier for dents, cracks, and
corrosion, or leaks are
corrosion that may cause leaks.
evident.
Holes or contamination are
c. Inspect air drier desiccant for holes and
evident.
contamination (Para 15-12).
Needle does not move.
d. Start engine (TM 5-2420-230-10) and
watch DUAL AIR PRESSURE gauge.
Needle should move up as pressure builds.
e. After several minutes, gauge should stop Air pressure below
120-125 psi (827-862 kPa)
between 120-125 psi (827- 862 kPa) as
governor cuts out. When governor cuts out, or governor will not adjust.
released air from air drier can be heard. If
governor does not cut out between
120-125 psi (827-862 kPa), adjust
governor (Para 15-9).
23.1 Annual
Arctic Heater (If
Remove glow pin (Para 20-10) and check for Glow pin damaged or
Equipped)
damage. Replace if necessary.
corroded.
Change 1
3-17
