Table 5-2. Troubleshooting
TEST OR INSPECTION
DRUM ASSEMBLY (FUEL AND WATER)
1. Front and Rear Plates Leak.
Step 1. Inspect for loose, damaged or missing capscrews.
Replace damaged or missing capscrews. Tighten capscrews. Tighten
capscrews to 30 foot-pounds (4.15 m-kg) torque.
Step 2. Inspect for damaged front and rear plate or missing components.
If plates are unserviceable, replace the drum (para 3-6).
PRESS ASSEMBLIES, VULCANIZING
2. Fabric of Drum Leak.
Inspect drums for cuts, punctures or abrasions through all plies.
Vulcanize a damaged drum as instructed in paragraph 5-15.
APPLICATION OF ELASTOMER
3. Scuffs and Abrasions.
Inspect exterior of drums for scuffs or abrasions where the fabric is exposed but not damaged.
Apply Elastomer to damaged drums as instructed in paragraph 5-14.
Section III. GENERAL MAINTENANCE
5-7. General Information for Vulcnizing Drums.
a. The efficiency of adequate vulcanization depends upon
proper cleaning and buffing, correct application and drying
of cements, and strict adherence to the established curing
b. The material used for patching shall be identical to the
material being patched.
The collapsible drums are supplied by three
vendors: The United States Rubber Company;
B.F. Goodrich Rubber Company; and Uniroyal
Inc. Patching materials are not interchangeable
between the drums manufactured by the vendors.
C. Do not attempt any repair within one inch of the out-
side diameter of the end plate or on hardware sealing
d. All patches will be vulcanized.
Cuts, punctures, or abrasions through all plies,
in excess of 8 inches (20 cm) in length, will not
An outside patch is mandatory
cuts or scrapes, if the
is damaged (para. 5-15). Cuts,
punctures and abrasions through all
plies up to 8 inches (20 cm) require
inside and outside patches.
f. Refer to figure 5-1 for a typical shop layout plan for
a drum vulcanizing repair facility.
Paragraphs 5-8 and 5-9 are included to provide
maintenance instructions for replacement of
drum hardware when vulcanizing procedures are
not required; however, all drums must be drained
and cleaned, as necessary, in accordance with
paragraphs 5-10 thru 5-13 prior to any repair