4. Disassembly and Reassembly
67
Items Usual Contents Features and application
Scale solvent Scale solvent 1 box
(4 kg × 4
removers)
• The scale solvent removes scale in a short time.
(1 to 10 hours)
• Prepare water (seawater is possible) in an
amount that is about 10 times the weight of the
solvent. Mix the solvent with water.
• Just dipping disassembled part into removes
scale.
To shorten removal time, stir remover mixture.
• If cleaning performance drops, replace remover
mixture with new remover mixture.
• Neutralize used mixture, and then dispose of it.
To judge cleaning performance of mixture, put
pH test paper into mixture. If test paper turns
red, remover mixture is still effective.
Neutralizer
(caustic soda)
1 box
(2 kg × 4
neutralizers)
pH test paper
Antirust Add antirust to fresh water system. Then operate
engine for approximately 5 minutes. Antirust will be
effective for 6 months.
Anti freeze Add antirust to fresh water system at the cold area
to engine operate.
Cleaning agent • The cleaning agent removes even carbon
adhering to disassembled parts.
• If a cleaning machine is used, prepare 4 to 6%
mixture of 60° to 80° to ensure more effective
cleaning.
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