TM 9-2330-381-14
4-87. STEP HYDRAULICS (CONT)
CAUTION
All fittings and openings must be capped or plugged immediately after opening to
prevent dirt, moisture, or foreign material from entering the hydraulic system or
damage to equipment may result.
NOTE
This procedure is for removal/installation of step hydraulic components. Perform
this procedure, or any portion of this procedure, as required to complete
necessary repairs. Use hydraulic schematic (figure FO-3) as a general guide for
hose routing.
REMOVAL
1.
Using a drain pan, tag and disconnect seven hoses (1) from fittings on step weldment (2). Install caps/plugs into
hoses disconnected.
2.
Tag and remove two hydraulic tubes (3) from elbow fittings (4) and tee fittings (5). Remove two fitting nuts (6)
and elbow fittings (4) from step weldment (2). Install caps/plugs into openings.
3.
Tag and remove two hydraulic tubes (7) from elbow fittings (8) and tee fittings (9). Remove two fitting nuts (10)
and elbow fittings (8) from step weldment (2). Install caps/plugs into openings.
4.
Tag and remove hydraulic hose (11) from tube nipple (12) and reducer adapter (13) on hydraulic control module.
Remove fitting nut (14) and tube nipple (12) from step weldment (2). Install caps/plugs into openings.
5.
Tag and remove hydraulic hose (15) from elbow fitting (16) and bulkhead fitting (17) on gooseneck isolation valve.
Remove fitting nut (18) and elbow fitting (16) from step weldment (2). Install caps/plugs into openings.
6.
Tag and remove hydraulic hose (19) from elbow fitting (20) on step weldment (2) and elbow fitting (21) on
hydraulic control module. Remove fitting nut (22) and elbow fitting (20) from step weldment (2). Install caps/plugs
into openings.
7.
Tag and disconnect hydraulic tube (24) from elbow fitting (21). Install caps/plugs into tube. Remove fitting nut
(23) and elbow fitting (21) from hydraulic control module. Install caps/plugs into openings.
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