6/ Repair Procedures
1503-0151-000 5/26/0 6-37
15. Install the MOBO housing cover.
16. Reinstall the bellows and ABA pop-off valve, the ABA housing and remove all
occlusions.
1. MOBO installation alignment tool
2. Cover mounting screws, 4x8 mm
3. Top cover, no-pilot weight cylinder
4. No-pilot weight cylinder
5. Captive MOBO assembly mounting screws
6. MOBO assembly body
7. Port for no-pilot weight
8. Port with O-ring
9. Port for pilot weight diaphragm
10 7900 main manifold
Figure 6-31
MOBO alignment and installation
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