FIXED FIRE EXTINGUISHER CYLINDER SERVICING (Sheet 1 of 1)
REFERENCE: TM 5-5420-202-20
Remove fixed fire extinguisher cylinders (TM 5-5420-202-20)
Handle charged cylinders with extreme
caution. Do not jar or subject cylinders to
temperatures above 140F (60C) to prevent
Do not handle fire extinguisher cylinders
unless safety caps (A) are installed. Cylinders
without safety caps installed, that are
accidentally discharged, can cause injury to
personnel and/or damage to equipment.
Inspect neck of bottle for pressure test
If cylinder is full, pressure test data must
not be over 12 years old.
If cylinder is to be refilled, pressure test
data must not be over 5 years old.
Inspect for plastic coating on indicator (B)
over safety valve outlet. If indicator (B) is
missing, cylinder is unserviceable.
Remove safety caps (A). Inspect threads
of flood valve (C) and discharge port (D).
Repair threads if required.
Install safety caps (A).
Using beam scales, weigh cylinder.
Serviceable cylinder must weigh a least 9
pounds more than empty weight. Empty
weight is stamped on flood valve (C).
If cylinder does not pass inspection steps 2,
3, 4, 5, and 8, cylinder must be sent
through supply channels for recharging or
End of Task