Clamp Assembly. - TM-55-1730-208-130028

TM 55-1730-208-13

3-44. Clamp Assembly.

i. Open release assembly (33) to relieve 3-16

Repair clamp assembly (figure 3-1) by replacing

hydraulic pressure. Use a suitable container to catch

defective parts.

escaping hydraulic fluid.

3-45. Hose.

j. Remove plug installed in step (7) above and

Repair of hose (39, figure 3-3) may be

install safety relief valve (24) in pump body (38).

accomplished by manufacturing a new hose and

replacement of defective hose fittings in accordance

k. Close release assembly (33) and operate pump

with repair instructions outlined in TM 55-1500-204-25/

handle. Check pressure indication of pressure gage.

Safety relief valve (24) should open between 2550 and

NOTE

2925 psi. Use a suitable container to catch escaping

Repair of the hose may be

hydraulic fluid.

accomplished only if requested by

CAUTION

organizational maintenance and

The safety relief valve is preset at

when specifically authorized by

assembly.

Do not attempt to

the direct support technical

move adjusting nut.

service officer.

l. Open release assembly (33) to relieve hydraulic

3-46. Foot Assembly.

pressure. Use a suitable container to catch escaping

Repair foot assembly (figure 3-4) by welding

hydraulic fluid.

broken or cracked welds.

3-47. Adjustment.

m. Remove cap from tee fitting and drain hydraulic

Adjust the hydraulic pump as follows

fluid from pump into a suitable container.

a. Install pump body (38, figure 3-' upright in a

n. Remove

pressure gage

and

fitting

from

suitable holding fixture.

discharge port of

p body (38).

b. Connect an external source of hydraulic fluid

o. Disconnect external source of hydraulic fluid at

(item 4, table 1-21 to intake port of pump body (38).

intake port of pump body (38).

c. Using a tee fitting,. install a suitable pressure

p. Remove pump from holding fixture.

gage (5000 psi) in discharge port of pump body (38).

3-48. Reassembly.

Connect return hose between tee fitting and external

Reassembly instructions for the clamp assembly,

source of hydraulic fluid.

pump assembly, cylinder and ram assembly, foot

d. Insert pump handle (1) into pump handle socket

assembly and tripod assembly are as follows:

(5), close release assembly (33), and operate pump

3-49. Clamp Assembly.

handle to check for proper pump handle effort. Adjust

a. Position eyebolt (9, figure 3-1 ) in rear half

pump handle socket pivot point as required to obtain

clamp (7) and install new rivet (8).

proper pump handle effort.

b. Assemble front half clamp 6}) on rear half clamp

e. Operate pump handle (1) and check for a 2235

(7) and install new rivet (8).

psi reading on pressure gage. Adjust plug (26) at intake

and discharge valve port as required to obtain a

c. Position cam handle (5) on front half clamp (6)

discharge pressure of 2235 psi. f. Disconnect return

and install lockwasher (4), washer (3), and cam bolt (2).

hose at tee fitting and cap tee fitting opening.

3-50. Pump Assembly.

Reassembly of the hydraulic pump assembly at

g. Remove safety relief valve (24) from pump

organizational level consists of assembly and

body (38) and install a plug in pump body opening.

replacement of the vent assembly (9, figure 3-2); safety

h. Operate pump handle and check pressure

relief valves (24 and 25); intake and discharge valves

indication of pressure gage. Safety relief valve (25)

(items 26 through 31); release assembly and associated

should open between 2975 and 3350 psi. Use a suitable

components (items 33 through 36); and installing the

container to catch escaping hydraulic fluid.

hydraulic pump on the reservoir (12). To reassemble

CAUTION

the hydraulic pump assembly, proceed as follows:

The safety relief valve is preset at

a. Vent Assembly. Assemble and install vent

assembly.

Do not attempt to

assembly as follows:

move adjusting nut.

(1) Apply white lead (item 5, table 1-2) on

threads of vent assembly (9, figure 3-2).

3-16