(m)
Permit sufficient time for the BMS 10-102, TYPE II to dry.
(n)
Make sure the repair plug bonded correctly.
(o)
If the edges did not bond, apply the BMS 100-102, Type II and push it correctly into its position. 1) Permit sufficient time for the BMS 10-102, Type II to dry.
(p)
If you use a patch without the BMS 10-102 top coat layer, apply the BMS 10-102, Type II topcoat layer to the repair area. 1) Do the procedure to apply the BMS 10-102, Type II, Grade B
topcoat layer.
H. Do the steps that follow to prepare a molded patch with the BMS 10-102, Type I Class 2, Spec insulation coating:
S 848-022-C00
(1) Prepare tooling molds from master models or other engineering approved models.
(a)
Lightly abrade the mold surfaces to remove any release agent.
(b)
Remove all residues with solvent.
(c)
Apply release agent to mold.
S 918-023-C00
(2) The BMS 10-102 type insulation coating systems come in kits that contain these parts:
(a)
Part A (base material)
(b)
Part B (catalyst)
(c)
Part C (catalyst thinner)
S 338-024-C00
(3) When the supplier's instructions are not used, use these steps to mix the materials and cast it in the molds as soon as possible:
(a)
Use a rigid blade that is not wood to fully mix part A until you get a constant mixture.
(b)
Fully mix the necessary quantity of part B and part C in a ratio of 1:1 by weight.
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(c)
Mix the applicable grades (Grade 30 or Grade 32) as follows: 1) For Grade 30, fully mix one part of the mixture of Part B and Part C, by weight, to 12.7 parts of Part A.
2) For Grade 32, fully mix one part of the mixture of Part B and Part C, by weight, to 7.77 parts of Part A.
(d)
Let the material you mixed stay for 10 minutes to get the correct density before you apply it.
NOTE: The pot life of the mixed material is 60 minutes for
____ Grade 30 and 10 minutes for Grade 32.
S 338-025-C00
(4) Cast the BMS 10-102 insulation coating material into the mold in a flat layer which is thicker than necessary.
(a) Use a trowel to make it smooth.
S 918-026-C00
(5) Do one of the steps to dry the plug material:
CAUTION: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO DRY THE
_______ INSULATION COATING SYSTEM. THE BMS 10-102 INSULATIVE SYSTEM CAN NOT DRY CORRECTLY BELOW 70°F. THE PROPERTIES OF THE INSULATION AND THE RATE TO DRY CAN CHANGE. IF YOU DO NOT OBEY THESE INSTRUCTIONS, YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
(a) Longer dry time:
1) Dry the plug at room temperature between 70°F and 90°F for 24 hours or until it has a minimum hardness of 40, measured with a Shore A durometer.
NOTE: A durometer value of 40 is the same hardness as
____
a rubber band.
(b) Shorter dry time:
1) Dry the plug at a room temperature of between 70°F and 90°F for 12 hours and then dry at temperature 160 |10°F for 4 hours. a) The molded patch is dry when it has a minimum hardness
of 40, measured with a Shore A durometer.
NOTE: A durometer value of 40 is the same hardness
____ as a rubber band.
(c) Remove the dried material from the mold.
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