Mirror Vibrations

FAQ / Trouble-shooting Guide

Freightliner
Western Star
Sterling Trucks

Subject: Applies to west coast mounted Hadley 4WAY

 

FAQ:

The 4WAY Mirror on my Freightliner Classic vibrates so badly at idle it is difficult to back into a dock or parking location.

Response:

  1. Hadley recommends first checking the mirror glass and motor
  2.  Using your hand, manually move the glass on the motor. There should be no abnormal stoppage, and not too loose or too tight. There should be firm but smooth movement throughout range of motion. Hadley defines abnormal as: any stopping, sticking, grinding of gears, or mirror moves with very little effort.
  3. Remove glass per instructions provided with each mirror kit or download instructions from www.hadleyadvantage.com
  4. Check the bayonet ring that locks to the motor. It should not be disconnect from the back of mirror at any point. This can happen when the locking tab is pressed beyond the locking tab stop. When replacing mirror glass or working on mirror motors, make sure to push the locking tab into place and not further.
  5. Once glass is removed, check the mounting screws on the motor and the mounting bolts at top and bottom of mirror. Make sure all are very tight. Also, assess the gears of the motor for any wear or degradation.
  6. The mirror should also have a rubber band around the motor (this band is not the rubber dust boot). Remove the dust boot and feel the side of the motor, if it is plastic then Hadley would suggest mirrors with the FET (Friction Enhancement Technology™). The FET is designed to compress the motor and gears to reduce degradation and vibration.
  7. Re- attach motor and glass and do a quick manual adjustment to see if there is a difference.

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After checking the glass and motor, there is still vibration at idle.

Response:

  1. We recommend checking the mounting bracket attachments (Bolts)Begin with tightening the door brackets, then move away from the vehicle tightening as you move toward the mirror. Once at the mirror, tighten the upper and lower bolts. Re-assess vibration upon completion
  2. Another contributor to mirror vibration are convex mirrors (especially off set mountings). Does your driver use upper and lower convex mirrors? Off set mounting can create cantilever situations, upsetting the balance of the mirror and brackets, contributing to stress on mounting bolts. A top mounted convex w/ off set mounting, will hang over face of 4WAY™ mirror glass. During engine vibration (idle), the convex glass will shake and create extra vibration to anything attached to the mirror bracket. Hadley recommends using a smaller convex or using a center mount convex to even out balance.

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Still there is mirror vibration.

Response:

  1. If the mirrors, mountings do not solve the issue, please check the door.
  2. The door should form a complete closure and seal.
  3. If there are gaps in the door at anytime, there is a potential mounting issue.
  4. Hadley recommends first checking the mounting bolts, and if necessary realign the door. Or follow step 3 above.Disclaimer: Hadley will not be responsible for parts or labor involved in replacing, realigning or tightening of door. This is understood to be a factory or field issue and should be addressed by appropriate Freightliner personnel.
    .

Response:

  1. A final recommendation and proven solution is to adjust engine idle speed.
  2. If idle speed is low (which most new trucks are @ 500rpm) adjust the speed while running and assess at what RPMmirror vibration is eliminated.
  3. If an Engine idle is very rough and there is no ability to change then the entire vehicle will vibrate uncontrollably.
    1.      Disclaimer: Hadley will not be responsible for any parts or labor associated with Engine adjustments, or any parts associated with the Engine itself. Dealers will have to perform and assume risk for making adjustments, any claims will have be resolved between Dealer and Freightliner /Daimler – Benz

 

After assessing the door, there is still mirror vibration.

Response:

  1. Once all steps are completed, and vibration issues still occurs, please return the product per appropriate warranty claims procedures.
    Or contact:
    Brian Kujala (616-249-8496) East coast /Canada

    Jeff Fohr (360-834-0760) West coast / USA

 

Cruising Speed Mirror Vibrations:

 

At +60 mph, the 4WAY™ mirrors vibrate so bad I can not see out of them / behind me?

Response 1:

    1. Does your vehicle (Freightliner Classic, Sterling, and Western Star) have a bug deflector?
      1. Bug Deflectors can create extreme wind turbulence at the Mirrors.
      2. Wind deflected from Bug shield, creates a tornado effect between the door and mirror, this will put a wind force back onto the face of the glass
      3. This is an issue that has been discovered and rectified in the past.

Response 2:

    1. Hadley recommends first checking the Mirror glass and motor
    2. Using your hand manual move the glass on the motor, there should be no abnormal stoppage, too loose, or too tight. There should be tight fluid movement throughout range of motion. Remove glass per instructions at www.hadley-products.com or provided with each mirror kit. Hadley defines Abnormal as: any stopping, sticking, grinding of gears, or mirror moves with very little effort.
    3. Check the bayonet ring that locks to the motor. It should not be disconnect from the back of mirror at any point. This can happen when the locking tab is pressed beyond the locking tab stop. When replacing mirror glass or working on mirror motors, make sure to push the locking tab into place and not further.
    4. Once glass is removed, check the mounting screws on the motor and the mounting bolts at top and bottom of mirror. Make sure all are very tight. Re- attach motor and glass and do a quick manual adjustment to see if there is a difference.
      1. Also, assess the gears of the motor for any wear or degradation.
      2. The mirror should also have a rubber band around the motor (this band is not the rubber dust boot). Remove the dust boot and feel the side of the motor, if it is plastic then Hadley would suggest mirrors with the FET (Friction Enhancement Technology™). The FET is designed to compress the motor and gears to reduce degradation and vibration.

 Response 3:

  1. We recommend checking the mounting bracket attachments (Bolts).
  2. Begin with tightening the door brackets, then move away from the vehicle tightening as you move toward the mirror.
  3. Once at the mirror, tighten the upper and lower bolts.
  4. Assess vibration upon completion
  5. Another contributor to mirror vibration are Convex mirrors (especially Off set mountings)
    1. Does your driver use upper and lower convex mirrors?
    2. Off set mounting can create cantilever situations, upsetting the balance of the mirror and brackets, contributing to stress on mounting bolts
    3. A top mounted convex w/ off set mounting, will hang over face of 4WAY™ mirror glass. During engine vibration (idle), the convex glass will shake and create extra vibration to anything attached to the mirror bracket.
    4. Hadley recommends using a smaller convex or using a center mount convex to even out balance.
      .

Still there is mirror vibration.

Response:

  1. If the mirrors, mountings do not solve the issue, please check the door
  2. The door should form a complete closure and seal.
  3. If there are gaps in the door at anytime, there is a potential mounting issue.
    1. Disclaimer: Hadley will not be responsible for parts or labor involved in replacing, realigning or tightening of door. This is understood to be a factory or field issue and should be addressed by appropriate Freightliner personnel.
    2. Hadley recommends first checking the mounting bolts, and if necessary realign the door. Or follow step 3 above.
      .

I’ve tightened everything down, the door fits fine but high speed there is still a vibration issue? There is no issue at idle.

  1. Check the mounting / orientation of mirror to bracket and cab. The sides of a 4WAY™ Mirror are flat, the more flat surface area exposed to the wind there is greater resistance created, in turn leading to more vibration.
  2. Turn the mirror glass so that the Aerodynamic shell is facing front and cutting through the wind.
    1. This can be done in the actual mirror mounts or by adjusting the entire bracket.

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Nothing has resolved this issue

Response:

  1. Please return the product per warranty standards to Freightliner/Hadley
  2. Or Contact Brian Kujala616-249-8496, East Coast/Canada email: bkujala@hadley-products.com