7/ Illustrated Parts List
7-12 1503-0151-000 3/27/97
1. Screw M4, 9211-0640-083 (2)
2. Alignment hole cover, 1503-3122-000
3. O-ring, 1503-3056-000
4. Seal pressure valve*†
5. Diaphragm MOBO†
6. Weight, no pilot, 1503-5015-000
7. Weight, pilot, 1503-5014-000†
8. Installation alignment tool, 1503-3124-000†
9. Housing MOBV, 1503-5016-000,
mounting screw (not shown) 1503-3105-000 (2)
* Installation alignment tool must be used when replacing seal
† Included in elastomers service kit, 1503-8017-000. When replacing diaphram,
pilot weight must also be replaced.
Figure 7-19
MOBO (Mechanical Over-pressure Bleed Off) valve
1
2
9
7
6
5
4
3
8
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