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Jaltest  |  SKU: 50004011

Jaltest (50004011) | Wear Sensor Tester (WST)

Regular price
€844,95 incl.
€698,31 excl.

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\nThe Jaltest WST (reference 50004011) is the Wear Sensor Tester: A compact portable device that allows you to operation and status of brake pad wear sensors checks. Cojali also provides the OE reference K154433N50 van Knorr-Bremse at.\n

\nYou connect the plug at the brake caliper loose, connect the matching Jaltest connector on, selects with the rotary switch the sensor type and reads the voltage in volts on the display. You compare this value with the reference table, and that way you know it wear percentage. This is how you check and adjustwithout dismantling components, allowing you to use the brake pad completely.\n

KEY FEATURES

AJaltest original device, reference 50004011, included in the Jaltest price list 2026.
Reads the actual position from the sensor, not just pass or fail.
Without dismantlingto use, so you can get the most from your brake pads.
Complete with a brand-specific cable set in carrying case, weighing approximately 1,270 grams in total.

KEY POINTS

Works with reference tables. Without the correct table, the voltage reading alone is meaningless.
Two sensor types: continuous wear sensors and 2-wire sensors. Use the rotary switch to select the correct setting.
Cojali does not publish measurement range, accuracy or battery type. We do not reproduce those figures.
This device does not replace visual inspection of brake pads and discs.

Applications and functionality

Which sensors the WST tests

  • Continuous wear sensors: Cojali lists DAF, Iveco, Mercedes-Benz, Scania, MAN and Meritor.
  • 2-wire sensors: The versions that only signal at the end of the wear cycle.

How to use it

  • Disconnect the plug at the brake calliper: That is where you connect.
  • Select the correct connector: The cable set includes connections for Renault, Volvo, Scania, Mercedes-Benz, Knorr-Bremse, DAF, EvoBus, Iveco, Hyundai, MAN and Wabco.
  • Set the sensor type: Using the rotary switch on the device.
  • Read the voltage and compare: The display shows volts; the reference table translates that to wear.
  • Follow the LEDs: Green is good, red is fault, amber means the battery is nearly flat.
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Good to know: Cojali states in the manual as a fitting criterion that the height difference of the pressure blocks under 0.25 mm must remain. Always adhere to the vehicle manufacturer's specifications.

Package contents

  • 1x Jaltest (50004011) | WST, Wear Sensor Tester
  • 1x Cable set with brand-specific connectors
  • 1x Carrying case

Technical specifications

Specification Description
Brand Jaltest (Cojali)
Reference number 50004011
Official name Jaltest WST (Wear Sensor Tester)
OE reference K154433N50 Knorr-Bremse
Type Sensor tester, standalone handheld device
Sensor types Continuous wear sensors and 2-wire sensors
Display Digital display in volts, comparable with reference table
Brands in cable set Renault, Volvo, Scania, Mercedes-Benz, Knorr-Bremse, DAF, EvoBus, Iveco, Hyundai, MAN and Wabco
Dimensions 144 x 66 x 40 mm
Weight Approximately 193 grams; approximately 1,270 grams including carrying case
Operating temperature -10 °C to 40 °C
Jaltest Link or licence required No