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Pressure differential switch repair 700 1987

Of course brake light came on, checked the switch, plunger and spring.
Cleaned mild corrosion no change.

Did the gravel road lock up test, confirmed only one front and one rear locked up. Working like it should.

Wondering if 272702-2 kit (found on posts for 240's) is correct for 740's

Also thinking about disassembling, cleaning and replacing O-rings? Has anyone tried this?

Have also replaced brake fluid every 50K. Currently at 625,000 or one million kilometers.

Tom






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