CF ChatterFix
Preventive Maintenance

Jaw Crusher Wear and Guard

The jaw crusher check looks at the plates, the toggle seat, and the flywheel guard with the wheel stopped and locked out. The technician writes the as-found reading and compares it with the last one on the asset. Do not enter the crusher cavity. Anything past that line belongs to the site's own procedure, the OEM manual, or a permit. This is the inspection ChatterFix schedules. It is not itself permission to go further.

Interval Weekly
Est. Duration 1.5 hrs
Steps 5
Applies To Mining & Aggregates

The Procedure

The steps ChatterFix schedules for this PM. Every step is a checkable item on the work order — a technician can speak their way through it without touching a keyboard.

  1. With the crusher locked out and the flywheel stopped, inspect the jaw plates for wear
  2. Check the toggle seat and the flywheel guard
  3. Look at the bearing housing for heat history and leaks
  4. Do not enter the crusher cavity
  5. A plate at the site's wear limit is a planned change-out, not a running adjustment

Why This PM Exists

The jaw crusher check looks at the plates, the toggle seat, and the flywheel guard with the wheel stopped and locked out. The technician writes the as-found reading and compares it with the last one on the asset. Do not enter the crusher cavity. Anything past that line belongs to the site's own procedure, the OEM manual, or a permit. This is the inspection ChatterFix schedules. It is not itself permission to go further.

What Skipping It Looks Like

A plate past the wear limit keeps running because the change-out is planned for next month and the cavity 'looks fine from above'. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not enter the crusher cavity.

Setting the interval

Weekly, locked out. A plate at the site's wear limit is a planned change-out, not a running adjustment. An as-found reading outside the limit the site already published is a finding. It does not become a new setpoint on this work order.

Equipment This Covers

Common Questions

How often should this PM run?
Weekly. Weekly, locked out. A plate at the site's wear limit is a planned change-out, not a running adjustment. An as-found reading outside the limit the site already published is a finding. It does not become a new setpoint on this work order.
How long does it take?
Budget about 1.5 hours for a technician working to the standard procedure. ChatterFix uses that estimate for capacity planning, then learns your plant's actual time from completed work orders.
What happens if we skip it?
A plate past the wear limit keeps running because the change-out is planned for next month and the cavity 'looks fine from above'. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not enter the crusher cavity.
Can I use this checklist in ChatterFix?
Yes — this exact procedure ships in the Mining & Aggregates industry pack. Pick your industry at signup and it is scheduled on the right assets automatically, with no configuration.

Related Procedures

Stop Retyping Your PM Library

This procedure — and every other PM for your industry — is already built into ChatterFix. Pick your industry and it lands on the right equipment, on the right interval, in about three minutes.