Meggitt Fuelling Products
Maintenance Manual (MMF251)
Hydrant Coupler – F251 Series
USE OR DISCLOSURE OF DATA ON THIS PAGE IS SUBJECT TO THE RESTRICTIONS ON THE TITLE PAGE OF THIS DOCUMENT
28 Feb 2014
Revision 4.0
7
D. Disassemble the Coupler Assembly
(See
IPL Figure 1
)
Note:
Before disassembly; if coupler assembly is equipped with elbow (
IPL Figure 2,
14);
remove screws (10), washers (11) and nuts (12) from coupler assembly.
1. Remove dust cover assembly (1) from shroud (3).
2. Use an API-style adapter without a poppet to release the latching lugs (7). (A 6.0 inch
(152 mm) outside diameter x 4.25 inch (108 mm) inside diameter x 3.0 inch (76 mm) long tube
may be used as an alternate for the adapter.)
Note:
Alternate method to release the latching lugs (7) is to depress one lug by hand then
slide a thin plate or a small Allen wrench between the back of the lug and the
shroud (3) to prevent the lug from catching in the groove. Repeat this step for all lugs
to release shroud (3) from body (37). Do step 4 after using this method.
3. Put the coupler assembly on the adapter. Press the coupler assembly down until the latching
lugs release the shroud. Slide the shroud down as far as it will go.
4. Rotate handle (17) about 45 degrees to the OPEN position.
5. Remove screw (10) from poppet (9). Remove poppet (9) from hinge (32).
6. Turn the coupler and gently tap the sleeve assembly (12) and springs (11) from body (37).
7. Pry the seal retainer (14) from the sleeve assembly (12).
8. Remove and discard seal (15) and O-ring (13) from the sleeve assembly (12).
9. Rotate handle (17) to the CLOSED position.
10. Remove cotter pin (23), washer (24), and pin (26) from crank (27). Discard cotter pin (23).
11. Remove links (31) and hinge (32) out of body (37).
12. Use a 0.06 inch (1.5 mm) diameter wire to push pin (25) out of the crank (27).
13. Drive pin (18) out of body (37).
