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Inspection and Repair.
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TM-55-1730-208-13 Jack Hydraulic Part Number 50J25178 (TYPE B6) Manual
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Appendix A: REFERENCES - TM-55-1730-208-130037
TM 55-1510-219-10
h. Assemble ram bearing (24) on ram (32) and
m. Secure socket pin assembly (21 to pump body
check clearance between ram and bearing surface.
(38) by installing chain (3) and screws (4).
Replace ram bearing if clearance exceeds 0.015 inch.
n. Lubricate  socket  pin  assembly  (2)  with
NOTE
lubricating oil (item 2, table 1-2). Position pump handle
socket (5) in pump piston (16) base and pump body
Check  clearance  through  full
(38). Secure with socket pin assembly.
travel of ram in ram bearing.
o. Adjust pump  in accordance with paragraph
3-47.
i. Assemble bearing sleeve (31) and bearing
sleeve (28) on ram (32), insert ram inside cylinder (33),
4-13. Cylinder and Ram Assembly.
and check clearance between cylinder and bearing
surface.  Replace bearing sleeve (31) and bearing
a. Assemble bearing sleeve (31, figure 3-3),
sleeve (28) if clearance exceeds 0.020 inch.
packing retainer (30), preformed packing (29), and
NOTE
bearing sleeve (28) on ram (32). Lubricate preformed
Check  clearance  through  full
packing with hydraulic fluid (item 4, table 2-1) prior to
travel of ram in cylinder.
reassembling.
b. Install ram pin (27) through bearing sleeve (28)
4-11. REASSEMBLY.
and ram (32). Secure ram pin with setscrew (26).
Reassemble the pump assembly and cylinder and
c. Install key assembly (25) on ram bearing 124)
ram assembly as follows 4-12. Pump Assembly.
and assemble ram bearing on ram (32).
a. Install connector assembly (37, figure 32) in
d. Start ram lock assembly (23) on ram (32)i
pump body (38).
Insure ram lock nut assembly is installed with retainer
b. Install  release  assembly  and  associated
screw up.
components (33 through 36}) in accordance with
e. Assemble collar (22) and retainer (20) and
secure with screws (21).
c. Install screen 32 and plug (31) in pump body (38).
f. Insert spring (19) and plunger (18) in hole at
d. Install intake and discharge valves (27 through
lower end of extension screw (17).  With spring and
30) in accordance with paragraph 3-50d.
plunger depressed, thread extension screw inside ram
e. Install safety relief valve (25) in accordance with
(32).
g. Install extension screw nut (16) on extension
f. Install safety relief valve (24) in accordance with
screw (17).
h. Lubricate bearing sleeve (28) and bearing
g. Lubricate preformed packing (23) packing nut
sleeve (31) with hydraulic fluid (item 4, table 1-2) and
(21), and pump piston (16) with hydraulic fluid (item 4,
insert ram assembly in cylinder (33).  Carefully push
table  1-2).  Assemble retaining ring (19), felt (20),
ram assembly down until bottomed in cylinder.
packing hut (21), packing retainer (22), and preformed
i. Install ram bearing (24) in cylinder.
packing (23) on pump piston 116) and insert In pump
j. Install socket assembly (15) in extension screw
cylinder.
(17).
h. Install pecking nut (21) felt (20), and retainer
k. Position indicator rod (12) and rise indicator
ring (19) in pump body (38).
tube assembly (13) on collar (22) and secure with wing
i. With pump piston (16) pushed in fully, install
nut (14).
chain (17) and screw (18).
I. Assemble jack pad adapter socket (8), pin (9),
j. Install plug (10) in reservoir (12).
and chain (10) and secure to cylinder (33) with screw
k. Install vent assembly (9) in reservoir (12).
(11).
l. Lubricate piston pin roller (7) and piston pin (6)
with lubricating oil (item 2, table 1-2), assemble in pump
handle socket (5), and stake piston pin (6).
4-4

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