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 TM 55-1905-219-14-7
3 - 209.
HYDRAULIC CUB PUMP UNIT - HYDRAULIC RESERVOIR TANK AND
STRAINER - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
CLEANING and FLUSHING
3.
If the system has accumulated
sufficient deposits to interfere
with normal operation, then it
must be either flushed with light
mineral oil or it may require
more extensive cleaning.
If light mineral oil is used, it
must contain a rust inhibitor to
protect metal surfaces against
rust after draining.
Systems sludged s6 much that they
cannot be thoroughly cleaned with
mineral oil must be dismantled
and cleaned mechanically.
Solvents and chemical cleaners
are not recommended for use in
hydraulic systems because they do
not offer sufficient lubricating
value, and result in damage to
moving parts. It is very diffi-
cult to remove all solvent or
cleaner from the system and any
remaining will dilute the fresh
hydraulic oil, forming gummy
deposits or an emulsion.
REMOVAL
4.
Hydraulic
a.
Reservoir
Drain or pump oil
Refer to step 2.
Reservoir
from reservoir.
tank
3-3233
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