TM 5-6115-465-34
TM 35C2-3-446-2
NAVFAC P-8-625-34
TM06858B/06859D-34
c.
Cleaning, Inspection, and Repair.
(8) Tighten locknut and remove hydraulic
pump assembly from test hookup.
(1) Clean all parts in dry cleaning solvent
f. Installation. Install hydraulic pump assem-
(Federal Specification P-D-680) and dry thoroughly.
bly in reverse order of removal procedures, install-
(2) Inspect drive gear for cracks and worn,
ing new gaskets, o-rings, and seals.
chipped, or broken teeth.
3-41.
HYDRAULIC SYSTEM FILTER ASSEMBLY.
(3) Inspect adapter for deep wear marks,
cracks, and galling.
a. Removal.
(4) Inspect pressure valve block and valve
(1) Disconnect hydraulic lines (1, figure 3-34)
plug for corrosion, wear and galling.
and drain hydraulic fluid into a suitable container.
(2) Remove nuts (2), lockwashers (3) and
(5) Check spring for chaffing, cracks, and
distortion.
screws (4) to remove filter assembly.
(6) Inspect flange eyelet and valve seat for
(3) Do not remove screws (5), lockwashers
wear, cracks, and galling.
(6), nuts (7) and mounting bracket (8) unless inspect-
ion reveals damage.
(7) Inspect drive shaft and gear assembly and
b.
Disassembly.
idler gear for cracks, deep wear patterns, and other
damage.
(1) Remove lock wire (9) and unscrew housing
(8) Inspect body and cover for cracks, corro-
(lo).
sion, deep wear patterns in gear bores.
(2) Remove and discard filter element (11),
(9) Replace all bearings, seals, gaskets, and
backup ring (12), packing (13) and backup ring (14).
o-rings at each overhaul.
(3) Remove elbows (15), o-rings (16), washers
(10) Replace any damaged parts.
(17) and nuts (18) from head assembly (19). Discard
o-rings.
d. Assembly. Assemble hydraulic pump in re-
verse order of disassembly procedures, installing
(4) Do not remove pressure relief valve (20).
new o-rings, gaskets, and seals.
c.
Cleaning, Inspection, and Repair.
e.
Testing.
(1) Clean all parts in dry cleaning solvent
(1) Install hydraulic pump assembly on a suit-
(Federal Specification P-D-680) and dry thoroughly
able test stand and provide a means of rotating at
with filtered compressed air.
approximately 600 RPM.
(2) Visually inspect moutiing bracket for
(2) Connect a hydraulic line to pump assem-
cracks, breaks and corrosion.
bly inlet.
(3) Inspect housing for cracks, corrosion, and
(3) Connect a hydraulic line equipped with a
other damage.
pressure gauge, and a restriction valve to the pump
(4) Inspect head assembly for cracks, breaks,
assembly outlet.
and corrosion. Check parts for deposits of foreign
material. Remove any deposits found.
(4) Operate pump at approximately 600 RPM.
(5) Check all threads for crossing, stripping,
(5) Close restriction valve until pressure
and peening. Repair minor thread damage with a
gauge reads 320 + 10 PSI. If 320 10 PSI is not
thread chaser.
obtainable, loosen locknut and adjust pressure
relief valve screw until 320 10 PSI is reached.
(6) Replace any damaged or defective parts.
(6) Slowly close the restriction valve while
d. Assembly. Assemble hydraulic system filter
observing the pressure gauge. The pressure should
drop. If not, continue to adjust pressure relief valve
assembly in reverse order of removal procedures.
screw until pressure does drop.
NOTE
(7) Loosen locknut and adjust pressure set-
Soak replacement filter element in oil con-
screw (11, figure 3-33) until pressure gauge indicates
forming to Military Specification MIL-H -5606
320 10 psig,
to remove trapped air before installing.
3-54
