Hydraulic Comparison Test Pump
Maintenance and Servicing
15
5.
To completely disassemble the reservoir, the top plate must be removed from the
instrument case.
6.
Disconnect the high-pressure tubing by unscrewing the gland nuts fitted to the
reservoir body (12).
7.
The low pressure feed to the priming pump is disconnected by pressing down on the
black plastic ring at the top of the connector, and gently pulling on the nylon tubing.
8.
Remove valve stem completely by turning counter-clockwise, taking care not to lose
the spring (2) and nylon washer (3).
9.
Lift off reservoir cover (4).
10.
Remove three screws from reservoir spacers that hold the assembly to the top plate.
The assembly can now be withdrawn from the underside of the top plate.
11.
The reservoir body (12) and reservoir cap (5) are a close fit to the reservoir tube (7),
and both rely on the O-ring seal (6) to hold them in place. These parts can be
separated by gently pulling them apart.
12.
The valve vent (10) is disassembled from the reservoir body by removing the three
screws (8).
13.
Reassembly is the reverse of the above procedure.
7
8
9
10
11
12
13
14
15
6
1
2
3
4
5
6
gkx12.eps
Figure 11. Reservoir Assembly
