TM 5-3805-298-23-2
0173
CLEANING HOSES, TUBES, AND FITTINGS
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NOTE
If available, use steam cleaner to clean hoses, tubes, and fittings and dry with
1. Fasten parts to rack as nearly vertical as possible to allow water to drain.
2. Clean exterior surfaces of parts thoroughly.
3. Clean interior surfaces of parts. Use hot water with soap solution first. Then use clean hot water to rinse.
NOTE
If steam cleaner does not have a soap injection system, spray an oil solvent into the parts.
This will dissolve oil film that holds contaminants inside parts. Then use clean hot water to
rinse.
4. Fasten components to rack so that components can be flushed from opposite ends. Repeat steps 2 and 3.
5. Use compressed air to dry inside of each part. Dry parts from both ends to make sure that all water has been
removed.
6. Install caps or plugs in ends of each hose, tube, or fitting as soon as parts are dry to prevent entry of airborne
7. Remove caps or plugs from component only when component is in position on machine and connection is to
be made.
HOSE AND FITTING INSPECTION INSTRUCTIONS
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1. Inspect lines for sharp kinks, cracks, bends, or dents.
2. Inspect hoses for fraying, evidence of leakage, or loose fittings or connectors.
3. Check all fittings and connectors for thread damage. Check for hex heads that are worn or rounded.
4. Mark all damaged material for repair or replacement.
TAGGING INSTRUCTIONS
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1. Use marker tags to identify all hydraulic lines, with related parts and attachment points. Fasten tags to hoses
during removal by wrapping wire fasteners around or through parts and twisting ends together. Position tags
out of the way during cleaning, inspection, and repair. Mark tags with a pencil, pen, or marker.
2. Identify hydraulic hoses when removing more than one line at the same time. Mark tags with related parts and
attachment points. If it is not obvious which end of a line goes where, tag each end of the line.
3. Identify and tag other parts by name and installed location as required.
LINES AND PORTS
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To keep dirt from contaminating fluid systems when removing and installing hydraulic lines, perform these steps:
a. Clean fittings and surrounding area before disconnecting lines.
b. Cover, cap, plug, or tape lines and ports after disconnecting lines. When these specialized covers are not
available, use plastic bags and rubber bands, clean rags, duct tape, or other similar materials to prevent
dirt from entering system.
c.
Ensure new and used parts are clean before installing.
d. Replace all removed tiedown straps.
e. Wait to remove covers, caps, plugs, or tape from lines and ports until just before installing lines.
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