HYDRAULIC CYLINDER HYDRAULIC LINES AND FITTINGS REPLACEMENT
(Sheet 1 of 3)
General Mechanics Tool Box SC 5180-90-N26
FRH hydraulic fluid may contain Tricresyl Phosphate (TCP) which, if taken internally, can cause
paralysis. Hydraulic fluid may be absorbed through the skin. If hydraulic fluid gets on skin, wash
with soap and water as soon as possible.
It is critical that special care be taken not to flatten, score, or otherwise damage the threads of
useable components during the removal and installation procedures.
. Due to the large number of fittings and varying lengths of pipe, the following procedures are
written in a general manner. Removal of any piping or fitting requires the counterclockwise
rotation of the component to be removed. Replacement of that component requires the clockwise
rotation. All piping and fittings are National Pipe Thread (NPT). Consideration must be given as
to how to reach the defective component and how it is to be removed.
A fitting, for example, located in the center of several other fittings and piping cannot be removed
without the removal of other components that may not be damaged. Removal of hard piping and
fittings requires disassembly beginning at the nearest end of the fittings or pipings to the
damaged component. After removal of one component in the line, then the next, and the next,
until the damaged component is reached and can be removed.
REMOVE HYDRAULIC CYLINDER HYDRAULIC
a. Remove half quick-disconnect coupling (1)
from straight pipe adapter (2). Retain
hydraulic cap assembly (3) for reuse.
b. Remove straight pipe adapter (2) from rubber
hose assembly (4).
c. Remove rubber hose assembly (4) from
straight pipe adapter (5). Retain hydraulic cap
assembly (3) for reuse.