Air Spring 1R14-039

Goodyear air spring for tractor suspensions

Air springs carry vertical load while keeping ride height stable across fuel burn, fifth wheel pin load, and road crown. The Goodyear air spring on this page belongs to the 1R14 family referenced in the listing title. When a bag fails, height drops on one corner, shock travel maxes out, and tire wear patterns turn diagonal within weeks.

Replacement is never only the rubber bellows. Bead plates, bumpers, and height control valves determine whether a new spring returns the axle to design ride height. Inspect those neighbors whenever a bag splits.

Listing scope is the air spring assembly described on the card. Hardware kits and leveling valves are separate purchases unless your PO already includes them.

Makes named on the fitment table

Published examples include Freightliner, Kenworth, Mack, and Peterbilt tractors. Engine rows read All in that table. Axle vendor and suspension package still vary within a single model name.

Verify using VIN build data, photos of bead plate bolt patterns, and the stamp on the removed spring. The fitment guide helps when a fleet mixes 1R14 variants across branches.

Send height sensor and linkage photos to support@aonetruckauto.com when automatic leveling behaves erratically after a blowout.

Published weight and price

Ship weight is 13.8 lb. Listed price is $118.50 USD before tax. Use weight for parcel versus LTL decisions per the shipping policy.

Bellows and port integrity checks

Before install, inspect the air port threads and bellows exterior for shipping rub-through. Inflate slowly to seat the convolutions while the axle is unloaded on safe stands.

Listen for leaks at the bead plate gasket and port fitting with soapy water at working height pressure—not merely at idle supply.

Ride height workflow

• Set the valve linkage to neutral before measuring ride height.
• Compare left and right heights within OEM tolerance bands.
• Torque bead hardware in the sequence the suspension maker publishes.
• Road test over known bumps and re-check height after thirty loaded miles.

Document spring stamp and axle position on the work order for credit claims your fleet processes internally.

Returns and storage

Store springs away from ozone sources and welding arcs. Creased bellows belong on the reject rack, not on a customer unit.

Height valves and sensor linkages

Air springs depend on height control valves reacting to axle motion within milliseconds. Bent linkages or frozen bell cranks keep valves open, bleeding air until compressors never rest. Inspect linkage whenever a bag is replaced on the same axle.

Over-tightened U-bolts on walking beam setups twist hangers and preload one bag harder than its neighbor. Measure ride height left versus right after any hanger work.

Tag axles that lift for empty return need explicit driver training so valves are not forced at wrong heights on loaded departures.

Load shift scenarios

• Re-check height after first full fuel load post repair.
• Compare steer axle height when fifth wheel pin load changes sharply.
• Listen for exhaust air at valves during static height hold.
• Log corrected pressure at design height in the fleet portal.

Height drift after bag work is often valve linkage, not the new bellows itself.

Torque sequencing on bead plates

Bead bolts tightened out of sequence pinch bellows and create slow leaks that appear only under highway vibration. Follow star patterns published for the suspension family and re-torque after the first loaded mile if the manual requires.

Height sensors on some steer axles use small links that bend when curbs strike wheels. Inspect links whenever a steer bag is replaced after a curb hit report.

Goodyear convolute care during handling

Do not lift tractors by bellows when moving units in the yard; internal wire rings deform silently. Use approved jack points even for quick repositioning during suspension work.

When pairing new bags with used hardware, inspect bead plates for cracked bolt holes that flex under air pressure and mimic bag leaks.

Ride height after tire changes

New tire diameters change ride height slightly; reset height valves after tire service on the same axle when bags were recently replaced. Drivers notice lean after tire swaps even when bags are healthy.

1R14 family bench checks

Compare bellows height uninflated against the removed unit before discarding; stretched old bags look longer than new packs and cause false mismatch fears.

Goodyear air springs on shared lanes should be stored away from ozone-generating welders; the same rule applies when neighboring bays service batteries and charging systems that vent gases.

1R14 bag geometry checks

Goodyear-style 1R14 bags still vary by bead plate and port clocking. Dry-fit the new bag against the old plate bolts before you cut the airline free.

Port threads that cross-thread at install will leak under road vibration even if the bellow looks perfect. Start the fitting by hand; if it binds, back out and clean the plate threads.

After inflation, walk the bag through a full dump and lift while watching for bellows contact on clamp heads. A bag that kisses a clamp at dump will rub through on the next mountain grade.

Keep the old bag until a loaded loop confirms ride height valves track correctly — soft corners are often linkage, not the new bellow.

Before you pay, skim the shipping policy and returns and refunds. Parts questions go to support@aonetruckauto.com.

Operator: HEAVY TRUCK PARTS, INC. We are not affiliated with the truck or filter brands named on this page.