Frequently Asked Questions About Freightliner FLT Cabover CAC Clamps, Boots & Hoses

What years and models of Freightliner FLT cabovers are these CAC components compatible with?

These charge air cooler components are designed for Freightliner FLT cabover models from 1986 through 2000, including the FLT86, FLT104, and FLT112 series. Always verify your specific engine configuration (Detroit, Caterpillar, or Cummins) as hose routing and clamp sizes can vary. Check your existing hose diameter and clamp size before ordering - most FLT cabovers use 3-inch to 4-inch CAC hoses, but some specialty configurations may differ.

How do I know if I need silicone or rubber CAC hoses for my FLT?

Silicone hoses are recommended for most FLT cabover applications due to their superior heat resistance (up to 500?F) and longer lifespan of 8-10 years versus 3-5 years for standard rubber. If your truck operates in extreme temperatures, hauls heavy loads regularly, or you want to minimize downtime from hose failures, invest in 4-ply or 5-ply silicone hoses. Rubber hoses work fine for lighter duty applications or if you're on a tight budget, but expect more frequent replacements.

What size clamps do I need and should I use constant torque or standard T-bolt clamps?

Constant torque clamps are strongly recommended for FLT cabover CAC applications because they automatically adjust for thermal expansion and contraction, preventing boost leaks. Most FLT CAC connections require 3.25-inch to 4.25-inch clamps, but always measure your hose OD to confirm. Buy clamps 1/4-inch larger than your hose diameter for proper fit. Stainless steel construction is essential to prevent corrosion in the engine compartment environment.

Can I install these CAC components myself or do I need special tools?

Installation is straightforward for mechanically inclined owners. You'll need basic hand tools, a torque wrench for proper clamp tightening (typically 50-60 inch-pounds), and possibly a heat gun to soften hoses for easier installation. Allow 2-3 hours for a complete CAC hose replacement. Common challenges include accessing clamps in tight spaces behind the cab and removing old hoses that may be heat-welded to fittings. Apply soapy water or silicone spray to ease installation and never use petroleum-based lubricants.

How often should I inspect and replace CAC boots and hoses on my FLT cabover?

Inspect CAC components every oil change for signs of cracking, bulging, or oil contamination. Even quality silicone hoses should be replaced every 8-10 years as preventive maintenance. Warning signs include boost pressure loss, increased turbo lag, black soot around connections, or visible deterioration. Keep spare clamps on hand - vibration and thermal cycling in cabovers can cause clamp failure without warning. Document your hose replacement dates as heat exposure accelerates aging in the compact FLT engine compartment.