Fluke P5500 Series, Руководство пользователя, Страница: 15 / 20

Hydraulic Comparison Test Pump
Maintenance and Servicing
7
4. The white, anti-extrusion ring (21) is a PTFE spiral, and can be removed by
“unwinding” it from the rambler.
5. When removing the rambler seal (20), take care not to use any tool that may have a
sharp edge that will scratch the surfaces of the rambler, otherwise it may leak when
reassembled.
6. The replacement rambler seal can be eased over the front of the rambler, and into
the groove.
7. Similarly, the new anti-extrusion ring can be “wound” into the groove in the rambler,
behind the rambler seal.
8. If the rambler has been separated from the lead screw, ensure that the ball (23) is
correctly fitted before reassembly.
9. Ensure that the rambler assembly is correctly located on the end of the lead screw
assembly. Carefully introduce the rambler into the open end of the barrel; making
sure that it does not tilt when entering the barrel.
10. Push the lead screw assembly fully in to the barrel, ensuring that the key in the nut
locates correctly in the slot in the barrel.
11. Re-tighten the barrel union nut.
W
Caution
If the lead screw assembly (24) shows signs of excessive wear,
then it is very likely that the associated components have worn
also; therefore, the screw press assembly is available as a
spare part.
Complete Disassembly
1. Remove the screw press assembly as described above.
2. Unscrew and remove valve stem (13), taking care not to lose spring (12) and nylon
washer (11).
3. Remove reservoir cover (10).
4. Unscrew locknut (9), and remove reservoir (8).
5. Unscrew valve body (6), taking care not to lose bonded seal (7) or O-ring (5).
6. Remove banjo bolts (1), together with banjo test ports (3), taking care not to lose
O-rings (2).
7. Disconnect the stand (15) from the bench. Remove screws (14), and tilt
manifold/barrel assembly downward and pass it out of the bottom of the stand.
8. To remove the barrel (19), the locknut (18) must be loosened approximately 1/2 turn.
The barrel can then be unscrewed from the manifold (16).
9. Before re-fitting the barrel, ensure that the barrel seal (17) is correctly located in the
counter-bore in the front of the barrel. Screw the barrel fully in to the test station, and
secure with the locknut.
10. Inspect all seals for wear or damage — replace as necessary.