Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 400 / 881

CHART 3005. REQUIRED MATERIALS FOR REPAIR OF PROPELLER DEICER
CEMENT APPLICATION.
1. Using a silver pencil, mark a centerline on the glossy side of the deicer.
2. Moisten a clean cloth with MEK or acetone and clean the unglazed surface of the deicer. changing cloth
frequently to avoid contamination of the clean area.
3. Thoroughly mix the 1300L cement. Apply one even brush coat of cement to the unglazed back surface of
the deicer. Cement one inch of the deicer lead strap. Allow to air dry for a minimum of one hour at 40° F or
above, when the relative humidity is less than 75°. If the humidity is 75° to 90°, allow two hours drying
time. Do not apply cement if the relative humidity is higher than 90°. After allowing the proper amount of
drying time, apply a second even brush coat of 1300L cement.
— Note —
If curling of the deicer edges is a problem, apply masking tape to the edges of the
glazed side before applying cement to the unglazed side. Remove the tape before
starting to install the deicer.
4. Apply an even brush coat of 1300L cement on the cleaned surface of the propeller blade, immediately after
the second coat of cement has been applied to the deicer. This timing is important for the cement on both
surfaces to reach the tack stage at the same time.
The materials and tools listed below are commercially available and are not supplied by
B.F. Goodrich in kit form:
Cement 1300L or EC 1403 (Minnesota Mining & Mfg. Co.)
Sealer 82-76-1 and -2 (B.F. Goodrich, Akron, Ohio or Sealer C-19861, C-21871 and C-16176
Lowe Bros., Dayton, Ohio)
Cleaning Solvent - MEK (MethylEthylKetone) or Acetone
Tackifying Solvent - Toluol or MEK (See Note)
Cleaning Cloth - any clean, lint-free cloth
1 inch paint brushes
2 inch rubber hand roller
1/4 inch hand stitcher
Masking tape
— Note —
MEK may be used instead of Toluol to tackify cement, but it provides approximately
10 seconds working time for deicer applications, whereas Toluol provides
approximately 40 seconds working time.
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
3 0 - 6 8 - 0 6
Page 30-40
Revised: May 15, 1989
2E20
PIPER AIRCRAFT