///Cutting is slower than before
Cut quality & parts

Cutting is slower than before

When cut speed drops step by step the wear parts are usually at their end.

Safety first: Switch off the pump, release all pressure (open the on/off valve or bleed-down valve) and lock out before you open any high-pressure part. Never put a hand or tool near a running jet.
1Check the causes, most likely first 0 of 4 checked
01Worn focusing tube Most likely

A wider bore weakens the jet.

How to check: Measure the exit bore; replace at about +0.1 mm.

PhotoArt. no.DescriptionReplaces OEMExcl. VAT
10324 Focusing tube 9.45 x 1.02 x 102
Focusing tubeKMT
— € 129.00
10867 Focusing Tube 9.45 x 0.76 x 76.2, 05097944
Focusing tubeKMT
KMT 10126969 € 75.50
10968 Focusing Tube 9.45 x 1.02 x 76.2, 49835390
Focusing tubeKMT
KMT 49835390 € 75.50
10969 Focusing Tube 9.45 x 0.91 x 76.2, 05116652
Focusing tubeKMT
05116652 € 77.02
11677 Focusing tube 9.45 x 0.76 x 102
Focusing tubeKMT
— € 129.00

02Worn orifice Possible

A less focused stream.

How to check: Inspect the stream.

03Not enough abrasive Possible

Too little abrasive cuts slower.

How to check: Do a timed weigh test.

04Low pump pressure Possible

Lower pressure cuts slower.

How to check: Check the pressure gauge.

Related problems

General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .