Haldex 40010155 Automatic Slack Adjuster Spline Arm - 1.5 10 5.5

The Haldex 40010155 is a clearance-sensing automatic slack adjuster that adjusts brakes automatically based on clearance between the brake drum and brake lining. This precision-engineered component is designed specifically for Kenworth truck drive axles with 8-bag air suspension systems, ensuring optimal braking performance and reliability.

Key Specifications:

• Fits 1.50" diameter camshaft with 10 spline configuration
• 5.5" arm length (span) straight slack adjuster with no offset
• 0.63" arm hole diameter
• Strap style anchor bracket
• Uses standard clevis for attachment to brake chamber pushrod

Features and Benefits:

• Adjusts during brake release when forces are at their lowest, prolonging service life
• Clearance-sensing design prevents excessive brake wear and failed roadside inspections
• Compatible with all major brand clevises
• Reduces maintenance costs and extends service intervals

This kit includes one slack adjuster, anchor bracket kit, and installation instructions. The Haldex ABA (Automatic Brake Adjuster) ensures consistent brake performance and helps maintain compliance with DOT safety standards for commercial vehicles.

Cross References: Western Star 76401-3466, Ryder Fleet U55