﻿GET_GEVOMechL2_07_01_01_42 - STEP-BY-STEP Cont Screen
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<b>Caution: </b>When adjusting the tandem brake slack adjuster, ensure that there is no more than one pin hole difference between the slack adjuster settings on opposite sides of the truck.

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If the slack adjuster settings differ by more than the length of one pin hole, the chocked brake linkage may shorten the usable life of brake components.

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5. With the piston rod fully retracted, adjust the slack adjuster to provide a minimum clearance of 0.75 inches (19 mm) between the brake shoe and the wheel.

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<b>Note: </b>If adjusting tandem brakes, ensure that the slack adjusters on the opposite side of the truck are pinned to the same length, plus or minus the length of one pin hole.

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If settings differ by the length of two or more pin holes, replace worn shoes or linkage parts to balance out the slack adjuster settings.

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6. Replace the slack adjuster pin and rotate the pin retainer in place over the pin.

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<b>Note: </b>If a slack adjuster is near the adjustment limit, check for excessively worn brake shoes or brake linkage components.

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Replace worn or damaged parts as needed.

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7. Check adjustments and the brake clearance at all other truck wheels.

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<b>Warning: </b>When adjusting the brakes, check the cylinder piston rod travel required to apply the brakes.

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Brake cylinder piston rod travel must not exceed 6.5 inches (165 mm).

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Piston rod travel beyond 6.5 inches (165 mm) may cause inadequate braking force against the wheels.

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8. Open the truck air cut-out cock to supply air pressure to the brake system, then check for proper operation of the adjusted air brakes.

