Product Manual

Maintenance and Servicing

Maintenance and Servicing 6

6-15

gjn019.eps

Figure 6-6. Check Valves Assemblies

Table 6-6. Check Valves Assemblies Parts List

Item Description Part Item Description Part

1 Pump Block 3921530 6 Pump Check Flange 3921744

2 O Ring 3864766 7 Screw 3909261

3 O Ring 3865142 8 Elbow 3862616

4 Bullet 3920584 9 Check Valve 3867767

5 Spring 3920600 10 Connector 3923564

Reservoir Assembly

1. To drain the fluid from the reservoir, first remove any weights, and raise the

instrument a few inches by placing suitably sized blocks under the feet.

2. Place a suitable catchment tray or bowl below the reservoir drain (13).

3. Open the valve by turning valve stem (1) counter-clockwise.

4. Remove gland nut and plug (13 & 12), and allow the fluid to drop into the

catchment tray.

To completely disassemble the reservoir, the top plate must be removed from the

instrument case (Refer to Chapter 6, Top Plate Removal).

5. Disconnect the high-pressure tubing by unscrewing the gland nuts fitted to the

reservoir body (11).

6. 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.

7. Remove valve stem completely by turning counter-clockwise, taking care not to lose

the spring (2) and nylon washer (3).

8. Lift off reservoir cover (4).