INSPECT CARGO DOOR SEQUENCE VALVE (AVIM)
Spool and sleeve are a matched set.
If one is damaged, both must be
Check that spool (4) slides easily in sleeve (5).
Measure diameter at two places (6) at end of
spool (4). Diameters shall not be less than 0.278
Inspect groove (7). Groove shall have no burrs
or other raised material. Remove with crocus
Measure diameter of sleeve (8). Diameter shall
not be more than 0.312 inch.
Measure diameter of stem (9). Diameter shall
not be less than 0.310 inch.
Check that stem (9) slides easily in sleeve (8).
There shall be no binding.
Measure diameter of bore (10) in end of cap (11).
Diameter shall not be more than 0.284 inch.
Check spring action of cartridge (3) as follows:
Apply pressure to spring guide (11) until
spring guide starts to move into housing (12).
Use spring compression tester (13). Spring
guide shall not move until pressure is at least