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Understanding Audi Allroad Control Arms and Suspension Set-Up
Diagnosing Worn Audi Allroad Control Arms
- Audi Allroad Control Arm Noise
Importance Of Correct Allroad Control Arm Repair
- Proper Audi Allroad Control Arm Replacement
BLAU® Audi Allroad Control Arm Replacement Kits
- Complete Allroad Control Arm Kit
- Upper Allroad Control Arm Kit
- Lower Allroad Control Arm Kit
- Limited Lifetime Warranty
|Passenger side view of an Audi Allroad equipped with our BLAU® Audi Allroad Air Suspension Conversion Kit.|
When discussing the Allroad suspension system, we break it into the following 2 categories:
An Audi Allroad has a sophisticated multi-link front control arm suspension. No doubt, the engineering goal was to create an amazing driving experience for owners. The driver and passenger side front Allroad suspension have a total of 8 control arms (each with ball joints and bushings), 2 tie rod assemblies (each with inner and outer joints), and 2 sway bar links. That's a combination of 24 moving hemi ball joints and bushings that make up your unique and complex Audi Allroad suspension.
FRONT Audi Allroad Control Arms - 1 Per Side:
Upper Audi Allroad Control Arms - Forward Position [IMAGE 1 A]
Upper Audi Allroad Control Arms - Rearmost or Aft Position [IMAGE 1 B]
Audi Allroad Tie Rod Assemblies (each with outer and inner joints) [IMAGE 1 C]
Lower Audi Allroad Control Arms - Forward Position [IMAGE 2 D]
Lower Audi Allroad Control Arms - Rearmost or Aft Position [IMAGE 3 E]
Audi Allroad Sway Bar Links [IMAGE 3 F]
Both of the upper Allroad control Allroad control arm's inner bushings are mounted to the shock absorber mounting plate. Also, both of the upper Allroad control arm's integral ball joints are mounted to the top of the suspension spindle assembly. The tie rod assembly is also mounted to this spindle assembly.
NOTE: Both of the lower control arms are specific to the Allroad model and differ in design when compared to other multi-link Audi control arms (i.e. Audi A6 models). The Audi Allroad came equipped with a pneumatic adjustable air suspension system, therefore the lower control arms are designed longer to accommodate the highest and lowest air suspension settings. They also have a specific ball joint taper design.
Both of the lower Allroad control arm's integral ball joints are mounted to the bottom of the suspension spindle assembly. Also, both of the lower Allroad control arm's inner bushings are bolted to the vehicle subframe (which supports the engine and transmission). The front brake calipers are bolted to the vertical suspension spindle, which also houses the wheel bearing hub. The shock absorber is mounted to the forward position lower Allroad control arm.
The REAR Allroad suspension is less complicated in design with upper and lower A-arms and a toe arm assembly. The rear Allroad control arms are not addressed on this page.
The Audi Allroad air suspension system consists of air bags that surround the shock absorbers instead of conventional coil springs. The adjustable Allroad air bag compression is managed by a control module and air compressor that are delivered via air lines. This type of Audi Allroad suspension set-up allows for variable suspension feel and height. See our Audi Allroad Airbag Suspension page for a detailed write-up regarding the air suspension, related issues, and replacement options.
When an Audi Allroad control arm is worn, most owners notice a suspension rattle, clunking, or creaking noise. These creaking noises usually increase when turning in and out of parking lots or driveways. When the control arm bushings have failed, some may even hear a suspension clunk during heavy braking.
Clunks are often due to control arm bushing failure and squeaks are often caused by the control arm ball joints.
Audi Allroad owners who use their air suspension regularly have reported shorter control arm life-span. The increased loads caused by the constant rising and lowering of the suspension puts additional loads as well as torsional or rotational stresses on the inner control arm bushings and ball joints.
It's often a difficult task to diagnose specific front Allroad suspension problems even for the most experienced mechanics. Why? With 8 control arms (each with ball joints and bushings), 2 tie rod assemblies (each with inner and outer joints), and 2 sway bar links there is a combination of 24 moving hemi ball joints and bushings that make up this unique and complex Audi Allroad suspension.
Unsure how to install Audi Allroad control arms or bushing? Curious as to how long it takes to replace them? Review our basic overview on How to replace and install multi-link Audi control arms.
It's important to choose an ASE Certified Audi mechanic that's familiar with the complexity of your specific Allroad front suspensions. Why? Time. Troubleshooting Audi Allroad control arm noise is often a tedious process of elimination. Automotive technicians who work on these multi-link Audi suspensions on a daily basis are properly equipped to diagnose and perform repair correctly and in the optimal amount of time.
An experienced mechanic will closely check all Allroad control arms and related components. Aged or ripped inner control arm bushings can usually be confirmed by visual inspection. However, the squeaks caused by control arm ball joints are much more difficult to pinpoint. Special tools are often used to apply pressure to specific areas to help find any play in the Audi Allroad control arm ball joints. The ball joint boot often hides the breakdown and depletion of the interior ball joint grease, that over time deteriorates and looses it's lubricating abilities.
Proper Audi Allroad Control Arm Replacement
Unfortunately, some customers have reported horror stories when choosing a shop that wasn't qualified to repair these complex suspensions. It is imperative that the proper procedures and tools be used when disassembling and assembly Audi Allroad control arms.
For instance, when popping out the lower ball joints, special ball joint puller tool #3287A is required [IMAGE Above Right]. Most shops don't have this tool and make the disastrous decision to use a ball joint fork [IMAGE Above Right]. A ball joint fork should never be used to remove the ball joint shaft from it's tapered mounted spindle. Using this incorrect tool almost always results in the ripping of the ball joint boot [IMAGE Right], which allows for road grime and dirt to enter and destroy the joint. Improper and uneven pressure and leverage causes unseen damage to the internal ball joint area as well. These costly mistakes and the resulting damage usually aren't noticed until after reassembly and several months of driving. Save on future repair costs and headaches, by having an ASE Certified Audi mechanic who is familiar with these complex systems, using the proper procedures to replace your Audi Allroad control arms.
Replacing Audi Allroad control arms one by one often costs more money in the long run. You'll save on installation costs when replacing all of your Audi Allroad control arms at once. If some of the control arms are on their way out, the others aren't far behind. You're better off getting the job done right the first time. Save hundreds of dollars by replacing all of your Audi Allroad control arms, tie rod ends, sway bar links, and hardware with our convenient updated kit! In the event of an Audi Allroad control arm failure, look to the nation's leading Audi Allroad control arm specialist for the solution!
Ocap of Italy is a certified Official O.E. (original equipment) supplier. This means that they're a direct supplier of suspension componentsfor VAG (Volkswagen Audi Group), along with their other exotic high performance companies Lamborghini, Bugatti, McLaren, Lotus, Renault Sport, and Porsche straight off the production line. They also supply Maserati, Mercedes, Volvo, and BMW. Ocap is also certified by TUV (Germany): UNI ISO-9001, TS 16949 (Quality System) and ISO 14000 (Environment System). Read more about OFFICIAL O.E. Ocap Control Arms.
The goal of BLAU control arm development was to confirm reliability through extensive and rigorous vehicle testing on the street, off road, and race track. In conjunction with our BLAU® Allroad shock absorber suspension system development, we performed extensive and extreme sessions of race track testing at Road America USA. For more information regrading our Allroad testing see our Audi Allroad Airbag Suspension page.
Under extreme race conditions the vehicle is in a continuous state of pitch, role, and yaw (cornering, braking, accelerating) at maximum speeds. The oscillating axial and radial loads transferred onto suspension components is further amplified in dynamic race track conditions. The physics of a 4,167 lb. Allroad approaching corners at over 120 MPH, last minute heavy braking, engagement of the anti-lock brake system, followed by throttle steering through 180° carousel turns, lap-after-lap, induces a magnitude of load strains onto suspension components that are classified as "extreme stress testing." We also performed cross county and rough off road testing. All of this rigorous and extensive vehicle testing proved successful with zero failures recorded, confirming the high quality design expectations of the control arms included in our BLAU® Allroad control arm kit.
Discriminating Allroad car owners want control arms that last. Blauparts® carries control arms that have been manufactured by OEM quality TUV/ISO 9001/TS16949 certified manufacturers. We are confident that our customers will be pleased with the quality and durability of our complete BLAU® Allroad control arm kits. BLAU® front Audi Allroad control arm kits come with our limited lifetime warranty along with a 30 day money back guarantee if you are not completely satisfied.
Upper Audi Allroad Control Arms
Audi Allroad Control Arm - Upper DS
8E0 407 505A
Audi Allroad Control Arm - Upper PS
8E0 407 506A
Audi Allroad Control Arm - Upper Rear DS
8E0 407 509A
Audi Allroad Control Arm - Upper Rear PS
8E0 407 510A
Lower Audi Allroad Control Arms
Audi Allroad Control Arm - Lower DS & PS
4Z7 407 151
Audi Allroad Control Arm - Lower Rear DS
4Z7 407 693D
Audi Allroad Control Arm - Lower Rear PS
4Z7 407 694D
Audi Allroad Tie Rod Ends Outer - DS & PS
8E0 419 811B