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jontay brown
on Oct 14, 2024

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A multiple trailer train combination consisting of a tractor and two trailers is spec'd to haul close to maximum loads.Throughout axles in the rig,where would you find the lowest relay valve crack pressures if the rig is spec'd for balanced braking?

A) rear axles on the pup trailer
B) rear axles on the lead trailer
C) tractor drive axles
D) tractor steer axle

Relay Valve Crack Pressures

The minimum pressure that must be reached in a pneumatic system before a relay valve opens, allowing air to flow through and activate other components.

Trailer Train Combination

The coupling of a tractor unit with one or more trailers in a configuration designed to transport goods, optimizing for load capacity and road safety.

Balanced Braking

The equal application of brakes on all wheels of a vehicle to ensure safe and effective stopping.

  • Understand the foundational concepts underpinning the pressure settings and adjustments in brake systems.
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Muhammad YassinOct 20, 2024
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