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 TM 55-1905-223-24-16
Table 2-1 Preventive Maintenance Checks and Services
D - Daily
W - Weekly
M - Monthly
Q - Quarterly
S - Semiannually
A - Annually
B - Biennially
Item
Intervals
Item To Be
No.
D
W
M
Q
S
A
B
Inspected/Serviced
Procedures
HYDRAULIC POWER PACK ASSEMBLY
1
Pressure Gauge
If pressure reading is above 2,900 psi, perform
troubleshooting according to Section IV of this
chapter.
CAUTION
Maximum hydraulic system operating temperature
is 150'F. Operating at higher temperatures
will reduce hydraulic system efficiency and
component service life, and will deteriorate
hydraulic fluid more rapidly.
2
Temperature/Level
Temperature readings must be taken when the
Gauge
alternating current motor in the hydraulic power
pack assembly is operating. Read temperatures on
the temperature/level gauge. If temperature reading
is above 150'F, perform troubleshooting according to
Section IV of this chapter.
3
Hydraulic Fluid
Hydraulic fluid level reading is taken when
Level Indicator
alternating current motor in the assembly is
operating. Check hydraulic fluid level indicator.
Keep hydraulic fluid level at full mark.
Investigate causes for loss of fluid.
4
Hydraulic Pump
Check hydraulic pump for unusual noise during
operating (see Table 2-2). Check leaks and ensure
that mounting bolts are secure.
5
Hydraulic Power
Thoroughly inspect hydraulic power pack assembly,
Pack Assembly
winch speed control valve, and hydraulic valve
assembly. Check for leaks and loose, broken, torn,
or missing components. Secure, repair, or replace
defective parts.
2-8
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