Does a Repaired Breaker Need a Break-in Period?

When the piston, bushings, or liner of your breaker are replaced, the parts need to "get used to" each other. This is called the **Break-in (Run-in) Period**. If you operate at full throttle immediately after installing new parts, they will overheat and seize.

1. How to Do Proper Break-in?

Pay attention to the following during the first run after repair:

• First 30 Minutes: Operate the breaker at half throttle (50% power).
• Frequent Greasing: Grease twice as much as normal during the break-in period.
• Resting: Run the breaker for 10 minutes and let it cool down for 5 minutes.

2. What Happens Without Break-in?

The surfaces of new parts are microscopically rough. If loaded without break-in, these roughnesses scratch each other (Scoring), and your newly installed parts can fail in the first hour.