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
9
23. Check condition of shear pin (6), if bent or cracked; discard. Check groove dimension as
follows:
a. (Mods: Basic,B-K,M,R: p/n 430141, Gold Shear Pin) The gold shear pin (6) groove
dimensions shall measure; Ø0.0245 ±0.0005 in. at 2 places. If measurement is out of
tolerance, discard gold shear pin (6).
b. (Mod A: p/n 430220, Red Shear Pin) The red shear pin (6) groove dimensions shall
measure; Ø0.02565 ±0.0005 in. at 2 places. If measurement is out of tolerance, discard
red shear pin (6).
24. Check condition of bushing (34), if worn do as follows:
a. Use a 3/8-16UNC, 6-1/2 inch long bolt threaded into the bushing as a draw-bolt and
remove bushing (34) from the body (37). Discard bushing (34).
25. Remove screw (36) and spacer (35) from body (37). Check spacer (35) thickness as follows:
a. The spacer (35) thickness shall measure; 0.063 ±0.001 inch. If thickness is out of
tolerance, discard spacer (35).
26. Check condition of guard (2), if worn do as follows:
a. Use a sharp bladed tool to cut the guard (2) from the shroud (3). Discard guard (2).
