Perkins — To Check And Adjust Main Brush Pattern
Adjustments
From a Perkins service manual — check it applies to your exact model before use.
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Procedure
- Apply chalk to a smooth, level floor.
- Raise side and main brushes and position main brush over chalked area.
- Start the main brush.
- Lower the main brush for 15 to 20 seconds with foot on brakes.
- Raise the main brush and stop it.
- Drive the machine off the test area.
- Observe the width of the brush pattern.
- To increase width, turn the main brush down pressure knob counter-clockwise.
- To decrease width, turn the knob clockwise.
- If tapered more than 15 mm on one end, adjust taper at the drive end.
Tools required
- Chalk Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Proper pattern width 65 to 75 mm (2.5 to 3.5 in)
Source: Perkins service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.