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 TM-55-1905-223-24-9
Table 2-1. Preventive Maintenance Checks and Services
D - Daily
S - Semiannually
A - Annually
Interval
Item
Item to be
No.
D
S
A
Inspected
Procedures
1
Fluid Levels
Pull out the top and bottom knobs of the sight
gauge on the side of the reservoir. Hold knobs
out while gauge fills. Read level. Above LOW
is OK. Below LOW means reservoir needs fluid.
Release knobs.
2
Filter elements
Put a waste oil container under filter. Read
vacuum gauge. If it shows less than 10 inches of
mercury (5 psi), unscrew and check the filter
cartridge. If the cartridge is dirty, or if the
vacuum gauge read 10 inches of mercury (5 psi),
or more, the cartridge needs to be replaced. See
Lubricate seal of cartridge with hydraulic fluid
and install. Secure hand-tight, then an ad-
ditional one-quarter turn.
3
Bearing points
Refer to Lubrication Order, LO 55-1905-223-12.
4
Hydraulic fluid system
After repair of system and/or when the fluid has
been contaminated, refer to paragraph 2-10
for drain/flush/fill/bleed instructions.
5
Check temperatures with a thermometer, not by hand.
If bearings are running hot (over 1800 F (82C)),
the condition may be a result of too much lubri-
cant. If changing lubricant does not correct the
condition, replace the motor(para. 2-18).
2-3
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