Author Topic: Crack detected at Front lower arm  (Read 9398 times)

Offline alangohek

  • Low End (2000 rpm)
  • **
  • Posts: 377
Crack detected at Front lower arm
« on: June 10, 2010, 12:29:00 AM »
Dear Bros and Sis,

I got my car jacked up at autobacs and found the following. Please see the cracks boxed up in yellow

According to the mechanic, it was common for Nissan Latio. According to him, will cause instability while traveling at high speed e.g on NSH

Anyone of you encountered this below? Any compromise on safety? Any advice on claiming warranty for the replacement of this part?

Please kindly advise.

Offline robtan99

  • Mid Zone (3000 rpm)
  • ***
  • Posts: 514
Re: Crack detected at Front lower arm
« Reply #1 on: June 10, 2010, 12:53:31 AM »
I think you are referring to the rubber joint at the lower arm.  I just change left and right lower arm 2 days ago after 120k

Dear Bros and Sis,

I got my car jacked up at autobacs and found the following. Please see the cracks boxed up in yellow

According to the mechanic, it was common for Nissan Latio. According to him, will cause instability while traveling at high speed e.g on NSH

Anyone of you encountered this below? Any compromise on safety? Any advice on claiming warranty for the replacement of this part?

Please kindly advise.

Offline alangohek

  • Low End (2000 rpm)
  • **
  • Posts: 377
Re: Crack detected at Front lower arm
« Reply #2 on: June 10, 2010, 08:58:33 AM »
I think you are referring to the rubber joint at the lower arm.  I just change left and right lower arm 2 days ago after 120k

Hi robtan99,

Thanks for your advise. Do you claim warranty or how much you pay?

May I check how do you find out that you have a cracked rubber joint?

thanks
alan

Offline robtan99

  • Mid Zone (3000 rpm)
  • ***
  • Posts: 514
Re: Crack detected at Front lower arm
« Reply #3 on: June 10, 2010, 10:03:56 AM »

You can try TCM if you are still under warranty.  Mine is aleady out warranty so i pay around 256.80 for 2 front lower arms
and 80.56 for installation.

The crack in the rubber joint for both side was told to me by a few workshops. 

Normally it should last around 100k with minor cracking.  The crack can be wear and tear due to road conditions or shock absorbers etc.  Just pray that the whole ruber joint dun crack, if not u will have problems with your handling.


Hi robtan99,

Thanks for your advise. Do you claim warranty or how much you pay?

May I check how do you find out that you have a cracked rubber joint?

thanks
alan

Offline robtan99

  • Mid Zone (3000 rpm)
  • ***
  • Posts: 514
Re: Crack detected at Front lower arm
« Reply #4 on: June 10, 2010, 10:11:21 AM »

For your reading pleasure..... note that minor cracks are okay but again who can determine that.....


The Purpose of the Control Arm Bushing
The control arm bushing consists of an outer metal sleeve, a durable rubber bushing and an inner metal sleeve. It's attached to the ends of the control arm as it's supported to the frame of the vehicle. Without the bushing, the metal ends of the control arm would be mounted to the frame and cause metal-to-metal contact. This would cause major clunking as the suspension maneuvers over bumps and other deviations on the roads. The bushing acts as a hinged dampener to cushion the suspension and provide a more manageable and quiet ride. Most front-wheel drive cars that employ struts only use a lower control arm, but many trucks and SUVs have an upper and lower control arm.
Upper control arm bushings are a little bit easier to inspect than lower ones. Peeking through the wheel well of each front wheel usually gives you a clear view to the bushings. In some cases, you can also inspect them from the engine compartment and look down on each side of the engine by the wheel.

Because rubber cracks and dry rots over time, look for signs of this symptom--although if it's just starting to dry rot and crack on the outer edges, it doesn't necessarily mean it needs to be replaced. The control arm ends should be perfectly centered inside the bushing to buffer it around the full diameter. A compromised bushing begins to weaken on the side that endures the most stress from the suspension.

The lower control arm bushings are usually encased between the end of the control arm and the side of the car frame, making them difficult to see. A large pry bar can be used to pry the control arm one way or the other. A good bushing returns the control arm to its original position when the pry bar is removed. A compromised bushing causes the control arm to stay in the position the pry bar moved it toward.
Deterioration of the Control Arm Bushing
When the bushings deteriorate, they affect alignment and vehicle handling. Wheel alignments are set in minor degrees, and it doesn't take much to position the tire at an awkward angle. All suspension components work in unison to position the tire as flat and straight onto the road as possible. A worn control arm bushing affects the camber angle of the tire. Camber is the vertical angle of the tire. When this is compromised, the tire cannot hit the road flatly. It's angled slightly enough to begin to wear the edge of the tire that contacts the road first. This not only causes excessive premature tire wear, it affects the way the vehicle steers. It may pull slightly or aggressively, depending on the severity of the bushing wear, to one side.

Worn bushings also allow metal-to-metal contact that they're intended to buffer when going over bumps. The suspension being compromised also affects the manageability of the vehicle when stress is placed on it.

Offline Snakekid

  • Cool Engine (0 rpm)
  • Posts: 27
Re: Crack detected at Front lower arm
« Reply #5 on: June 10, 2010, 12:56:58 PM »
Got my 2nd had latio and also found out this prob on left lower arm when Autobaccs jacked up my car. Same advice that is common prob for Latios.  Got both arms replaced at Riverview. Mileage only 62K. I suspect previous owner might have hit kerb or something hard..

Offline alangohek

  • Low End (2000 rpm)
  • **
  • Posts: 377
Re: Crack detected at Front lower arm
« Reply #6 on: June 10, 2010, 02:17:10 PM »
Got my 2nd had latio and also found out this prob on left lower arm when Autobaccs jacked up my car. Same advice that is common prob for Latios.  Got both arms replaced at Riverview. Mileage only 62K. I suspect previous owner might have hit kerb or something hard..
May I check how much did you pay for the replacement at Riverview?

Offline alangohek

  • Low End (2000 rpm)
  • **
  • Posts: 377
Re: Crack detected at Front lower arm
« Reply #7 on: June 22, 2010, 02:58:59 PM »
I sent my car for this in the morning and was advised by Bukit Timah, Tan Chong that the rubber was not damaged.

They told me that the "bush" was not meant to be circular shape and what was observed was normal.

I told them about the intermittent occassional tok-tok sound at slow speed and moving off. They changed the steering coupling for me. This is the second change of the steering coupling.