Mercedes Benz Power Steering Leak
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Date: 2020-08-05
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Comments and reviews: 9
Garth
Not enough plastic material at that O ring fitting neck area. Surely it was cracked prior to you removing it since it was leaking the day it came in for the estimate. Problems with engineers got this started. That fluid port design has some complex design work in it so when they designed the thickness of the plastic tank. likely they also left the same thickness at that fitting area. I'd have to say that was wrong since plastic loses it's elasticity and strength when exposed to hot environments. The weak point of that tank is right there where the fluid supply flow to the pump and vibration, heat, torque, plus likely some stress from the single fastener caused the thing to fail. 5 years later proves the design and material isn't up to snuff. Some of those cars have long warranties.
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Not enough plastic material at that O ring fitting neck area. Surely it was cracked prior to you removing it since it was leaking the day it came in for the estimate. Problems with engineers got this started. That fluid port design has some complex design work in it so when they designed the thickness of the plastic tank. likely they also left the same thickness at that fitting area. I'd have to say that was wrong since plastic loses it's elasticity and strength when exposed to hot environments. The weak point of that tank is right there where the fluid supply flow to the pump and vibration, heat, torque, plus likely some stress from the single fastener caused the thing to fail. 5 years later proves the design and material isn't up to snuff. Some of those cars have long warranties.
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George
Always replace the reservoir when replacing the o-ring. The filter screen inside the reservoir tears allowing the fluid to flow in with very little resistance
which causes the fluid to aerate(If you ever see one of these with a p/s whine and the fluid level is normal take a peek inside the reservoir with the engine running and if you see the fluid flowing violently the screen is torn. Also please please please use factory parts-URO is complete garbage!
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Always replace the reservoir when replacing the o-ring. The filter screen inside the reservoir tears allowing the fluid to flow in with very little resistance
which causes the fluid to aerate(If you ever see one of these with a p/s whine and the fluid level is normal take a peek inside the reservoir with the engine running and if you see the fluid flowing violently the screen is torn. Also please please please use factory parts-URO is complete garbage!
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Joe
I have my first euro ever now. And I can say there has been some speed bumps as far as maintenance costs and chasing quality Parts. But there hasn't been a lot of it. And the car rides and handles like a dream compared to any Chevy I ever had. Incredibly stable at high speeds. I've often looked down on the highway, and been like oh crap I'm doing 100. Lol the Jeep Cherokee I used to have at 100mph, you had White knuckles and we're praying the rosary.
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I have my first euro ever now. And I can say there has been some speed bumps as far as maintenance costs and chasing quality Parts. But there hasn't been a lot of it. And the car rides and handles like a dream compared to any Chevy I ever had. Incredibly stable at high speeds. I've often looked down on the highway, and been like oh crap I'm doing 100. Lol the Jeep Cherokee I used to have at 100mph, you had White knuckles and we're praying the rosary.
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Steve
Great job, I had hard time pushing the C clamp in. OEM reservoir and O ring aren't very expensive, but I assume hard to get where you're at. Oh, someone mentioned the reservoir has filter built-in it. I don't see you bleed air after filling PS fluid, it'll whine badly without.
Power Steering fluid flush is super easy on this ML320, just need someone else to turn the wheel lock to lock a few times(10-15) while bleeding air.
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Great job, I had hard time pushing the C clamp in. OEM reservoir and O ring aren't very expensive, but I assume hard to get where you're at. Oh, someone mentioned the reservoir has filter built-in it. I don't see you bleed air after filling PS fluid, it'll whine badly without.
Power Steering fluid flush is super easy on this ML320, just need someone else to turn the wheel lock to lock a few times(10-15) while bleeding air.
reply
Ronald
Premium German cars are over engineered. They just try too hard. Cheaper German cars contain bad materials. They have to compensate the high labor cost with crap materials to be competitive. I used to like German cars, but I would never buy any European car anymore. I drive Japanese. They do the job, year in year out, many times over, with only maintenance to worry about.
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Premium German cars are over engineered. They just try too hard. Cheaper German cars contain bad materials. They have to compensate the high labor cost with crap materials to be competitive. I used to like German cars, but I would never buy any European car anymore. I drive Japanese. They do the job, year in year out, many times over, with only maintenance to worry about.
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DAN
my Mercedes ML350 has steer pump oil leak slowly. the auto shop's owners told me need to replace the whole piece with control valves, which could cost about from 1500-1800. i just wish your shop is near to where I live, I will definitely bring the car to you to fix it: )
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my Mercedes ML350 has steer pump oil leak slowly. the auto shop's owners told me need to replace the whole piece with control valves, which could cost about from 1500-1800. i just wish your shop is near to where I live, I will definitely bring the car to you to fix it: )
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GNX157
Would of been Perfect use of some brake clean. Proper diag would be to thoroughly clean the area then run the car and check for leaks. Heat and wind can cause that fluid to leech all over that pump and res so a good clean and dry is really important.
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Would of been Perfect use of some brake clean. Proper diag would be to thoroughly clean the area then run the car and check for leaks. Heat and wind can cause that fluid to leech all over that pump and res so a good clean and dry is really important.
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commodore665
European car makers are the only ones who put four different sized nuts on the same component, each requiring a specialized tool that is manufacturer specific. I swear and curse my Alfa Romeo V6, but glory at it's sound.
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European car makers are the only ones who put four different sized nuts on the same component, each requiring a specialized tool that is manufacturer specific. I swear and curse my Alfa Romeo V6, but glory at it's sound.
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Spencer
in a small ontario town i got made fun of for having one of these, until the first big snow hit and i was pulling everyone out-and i mean everyone, foresters, tow trucks, chevs and fords dodges alike.
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in a small ontario town i got made fun of for having one of these, until the first big snow hit and i was pulling everyone out-and i mean everyone, foresters, tow trucks, chevs and fords dodges alike.
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