Lezyne CNC Dirt Floor Drive Gauge Replacement

Step 1 Removing the Gauge Cover



• Using a flat head screwdriver, pry up an edge of the gauge cover.
• Remove the gauge cover.
Step 2 Removing the Gauge Face Plate and Internals



• No parts from the old gauge will be re-used, so there is no need to attempt to preserve the parts. However, be careful not to damage the gauge housing.
• Pry up a corner of the gauge face plate.
• Use pliers to pull off the gauge face plate.
• Be careful when prying off the face plate, as the edges are sharp.
• Use pliers to remove the internal gauge mechanics.
Step 3 Removing the Old Gauge
• Using pliers, grip the exposed brass piece and unthread the gauge by rotating the gauge counter-clockwise.
• Pull the gauge out of its housing.
Step 4 Replacing the Gauge O-rings
• Remove the O-ring that is at the bottom of the threaded hole that the gauge threaded into.
• Place a new O-ring into the hole.
Step 5 Applying Threadlocker
• Apply medium-strength Loctite (green, 290) to the threads of the new gauge.
Step 6 Installing the New Gauge
• Thread the new gauge into the floor pump by turning it clockwise in its housing.
• Thread the gauge until it is snug and the BAR/psi markings are aligned with the pump body.
• Gauge performance will not be affected by its position, so long as it is snug.
• Allow at least 30 minutes for the thread locker to set.
• Test pump to its highest rated pressure and listen for leaks. If you can hear leaks from the gauge, tighten it.

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iRobot

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