Operating instructions

wise indicated.”
40. Description
The discharge block assembly and hy-
draulic pressure gage (3, fig. 3) is mounted
on the front of the body and plunger as-
sembly (1, fig. 3) and can be removed by
unscrewing four socket head cap screws
(4, fig. 3). It consists primarily of a cap
nut assembly (2E), discharge block sub-
assembly (2F), gage valve assembly (2H)
with handle (2J), filler rod assembly (2B),
valve seat (2C), and hydraulic pressure
gage (1). The flow of test fluid from the
reservoir assembly (2, fig. 3) is controlled
by the discharge block assembly by opening
and closing the gage valve assembly (2H).
41. Maintenance
a. General. Organizational personnel
has the authorization for the complete
maintenance of the discharge block assem-
bly and hydraulic pressure gage to the
extent of removing, disassembling for
inspection and replacement of all unserv-
iceable components, and the final steps of
assembling and installing the assembly
and gage.
h. Removal. Unscrew the four socket
head cap screws (4, fig. 3) and remove
the discharge block assembly and hydrau-
lic pressure gage (3, fig. 3) from the body
and plunger assembly (1, fig. 3).
c. Disassembly. Remove the hydraulic
pressure gage (1) by unscrewing it from
the discharge block sub-assembly (2F).
Unscrew the gage valve assembly (2H)
with handle (2J) and remove the gasket
(2G). Remove the cap nut assembly (2E),
valve gaskets (2A), filler rod assembly
(2B), and valve seat (2C) from the dis-
charge block sub-assembly (2F). Remove
the valve O-ring (2D) from the valve seat
(2C).
d. Cleaning. Clean the parts thoroughly
with an appropriate solvent (par. 23).
e. Inspection and Repair.
Section VI. DISCHARGE BLOCK ASSEMBLY AND HYDRAULIC PRESSURE GAGE
Note. The key numbers shown below in parentheses in this section refer to figure 4 except where other-
(2D) and all other parts determined
not in good condition.
f. Assembly. Screw the cap nut assem-
bly (2E) onto the discharge block sub-
assembly (2 F). Place the valve O-ring (2D)
on the valve seat (2C). Install the valve
gasket (2A), valve seat (2C), filler rod
assembly (2B) and valve gasket (2A) in
the discharge block sub-assembly (2F).
Place the gasket (2G) on the gage valve
assembly (2H) and screw the gage valve
assembly into the discharge block sub-
assembly. Screw the hydraulic pressure
gage (1) into the discharge block sub-
assembly. Install the discharge block as-
sembly and hydraulic pressure gage (3,
fig. 3) on the body and plunger assembly
(1, fig. 3) and secure in place with the four
socket head cap screws (4, fig. 3).
(1)
(2)
16
Inspect the filler rod assembly
(2B), valve seat (2C), gaskets (2A
and 2G), cap nut assembly (2 E),
and gage valve assembly (2H) for
being in good condition (par. 22b).
Replace with new the valve O-ring
Figure 4.. Discharge block assembly
and hydraulic pressure gage.