An Inexpensive Locking Fuel Cap for Diesels
If a locking fuel cap is available for the diesel Hummer, I have not
seen it. So, for those of you who have diesel beasts and wish to have
some security over what goes into the fuel tank, I have made an
inexpensive but effective fuel cap lock. This entire setup is purchased
for less than $12. I don't think it voids our precious warranty. There
are no patents for this nor are there any endorsements.
The list of materials is simple.
Look at the attached photos for end result. Use the photos as you read the
instructions for installation.
- 6" hasp for a lock
- 4 small screws that fit the four holes of the hinged part of the hasp
- 1 small lock which fits around the Tee-handle of the fuel cap. (i.e.
1" x 3/16")
Simple, secure, and sweet.
- Cut off the end of the hasp through the portion that is slotted.
File off any burrs and round the end with the file to avoid a nasty cut
later. With a ball peen hammer form the end of the hasp that will be
screwed to the fuel shroud. This involves making a slight curve in the
hinged portion of the hasp. The hasp is now ready for mounting.
- Locate the hasp vertically in the shroud with the hinged end fitting
snug against the shroud. Mark a hole for the lock on the hasp. I used
a 3/16" for the small lock. Refer to the attached JPEG file. Mark the
four holes for the screws.
- Drill the hole in the hasp. 3/16" or 1/4" is adequate.
- Drill out plastic fuel shroud for the four holes for the screws. If
you remove fuel cap to drill the holes, stuff a rag in the fuel filler
pipe to avoid getting drill filings in the fuel tank.
- Use the four screws to attach the hasp. Self-locking nuts and/or
locktite should be used to make sure nothing comes loose.
- Install the fuel cap. The hasp swings out of the way. Turn the
Tee-handle and make sure it is positioned vertical. Install the lock.
The lock prevents the Tee-handle from turning and the forced removal of
the cap if someone attempts to pull it out of the filler tube.
By Myk Manon