Fuel Cell Repair - Piper PA-44-180 SEMINOLE Maintenance Manual

The cells to be repaired should be placed on a well-lighted table. Maintain natural contours, if possible, while
repairing. Prevent contact with sharp edges, corners, dirty floors or other surfaces. Repair area must be well-
ventilated. Do not stack cells. Inspect cavities and insure cleanliness prior to installing any cell.
2. When storing cells, observe the following rules:
A. Fold cells smoothly and lightly as possible with a minimum number of folds. Place protective
wadding between folds.
B. Wrap cell in moisture-proof paper and place it in a suitable container. Do not crowd cell in container,
use wadding to prevent movement.
C. Stack boxed cells to allow access to oldest cells first. Do not allow stacks to crush bottom boxes.
Leave cells in boxes until used.
D. Storage area must be dry, 70° F, and free of exposure to sunlight, dirt and damage.
E. Used cells must be cleaned with soap and warm water prior to storage. Dry, and box as outlined
above.
REPAIR OF FUEL CELLS.
WHEN SERVICING OR INSPECTING VENDOR EQUIPMENT INSTA L L E D
IN PIPER AIRCRAFT, IT IS THE USER'S RESPONSIBILITY TO REFER TO
THE APPLICABLE VENDOR PUBLICATION.
Procedures for the maintenance, repair and "quick cure" repair of fuel cells constructed of LORAL or
GOODYEAR VITHANE® material, should be referenced to the applicable vendor publication (see VENDOR
P U B L I C ATIONS page, introduction section). There are two methods by which these repairs may be
accomplished. One method is by heat cure, the other is air cure. The end result of either repair is a neat,
permanent repair. The heat repair allows the cell to be cured and ready for reinstallation in two hours while the
air cure method requires that the cell not be moved for 72 hours during the air cure period.
Air cure repairs to be made at room temperature at approximately 75°F. For each 10°
drop in temperature add 20 hours cure time. For instance if room temperature reads
65°F, air cure for 92 hours instead of 72 hours.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— WARNING —
— Note —
2B4
2 8 - 11 - 0 8
Page 28-08
Revised: May 15, 1989