Frequently Asked Questions About International PayStar 5000 Brake Chambers & Acc.

What brake chamber sizes are compatible with my PayStar 5000, and how do I identify which one I need?

PayStar 5000 models typically use Type 30 brake chambers for the front axle and Type 30/30 or Type 36 for the rear, depending on your specific model year and GVWR. To identify your correct size, check the stamped numbers on your existing brake chamber housing or consult your vehicle's build sheet. The chamber size directly correlates to the brake force output - Type 30 provides 3,000 lbs of force at 100 PSI, while Type 36 provides 3,600 lbs. If you're unsure, measure the diameter of your current chamber: Type 30 measures approximately 6.75 inches, while Type 36 measures about 7.25 inches.

Are aftermarket brake chambers reliable for heavy-duty PayStar 5000 applications, or should I stick with OEM parts?

Quality aftermarket brake chambers from reputable manufacturers like Bendix, MGM, and Haldex perform comparably to OEM units when properly specified for your application. These brands meet or exceed FMVSS-121 standards and often cost 30-50% less than OEM. The key is ensuring you purchase the correct type (standard or long stroke) and that the chamber is rated for your vehicle's weight and brake system pressure. Many operators report 200,000+ miles from quality aftermarket chambers with proper maintenance.

What are the most common installation challenges when replacing brake chambers on a PayStar 5000?

The most frequent installation issues include: incorrect pushrod length adjustment, which can cause dragging brakes or poor stopping power; difficulty accessing mounting bolts on piggyback chambers due to frame rail clearance; and air line routing problems when replacing with different brand chambers. Always mark your pushrod position before removal and use a brake chamber stroke indicator tool for proper adjustment. You'll need a 3/4" and 7/8" wrench for most installations, and applying anti-seize to mounting studs prevents future removal problems.

How do I know if I need standard or long-stroke brake chambers for my PayStar 5000?

PayStar 5000 models from 2007 onwards typically require long-stroke chambers to meet reduced stopping distance regulations. Long-stroke chambers have a 3-inch maximum stroke versus 2.5 inches for standard chambers, providing approximately 20% more brake force. Check your vehicle's door jamb certification label - if it shows compliance with FMVSS-121 reduced stopping distance requirements, you need long-stroke chambers. Mixing standard and long-stroke chambers on the same axle will cause uneven braking and premature wear.

What's included in a complete brake chamber kit, and what additional parts might I need?

A complete brake chamber typically includes the chamber assembly, mounting nuts, and clevis pin hardware. However, you'll often need to purchase separately: clevis pins (if worn), slack adjuster clevis (check for elongated holes), pushrod (if bent or corroded), and air line fittings. Many technicians recommend replacing the rubber hose connecting to the chamber at the same time, as these often crack with age. Budget an extra $20-40 per chamber for these wear items to complete the job properly.