Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-05-2010, 09:40 AM
Registered User
 
Join Date: Mar 2010
Location: Freehold, NJ
Posts: 490
brake pressure loss

I have a 1980 300TD. I was driving last night and I started to smell an electrical burning smell inside the car. I stopped and started to see a little smoke coming from the front of the car (passenger side). I opened the hood and everything was fine, but could still see and smell smoke in front of the head lights. I drove the car again and went to stop and there was no brake pressure at all. The pedal went to the floor and even pumping it did nothing. I let the car sit for a while started it and drove and it stopped again no problem at all. I just drove it to work this morning and again, no problems at all. I'm at a loss for what could have happened and what was burning on the right front side? I replaced the pads all around about a month ago. Any ideas or suggestions would be appreciated.

Reply With Quote
  #2  
Old 09-05-2010, 10:04 AM
TX76513's Avatar
Platinum Member
 
Join Date: Apr 2003
Location: Brandon, Mississippi
Posts: 5,203
You may have had a caliper stick - causing your b fluid to heat up. Take a look at front rotors for discloration (heat). This is definatley something you want to look at.
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)
Reply With Quote
  #3  
Old 09-05-2010, 10:21 AM
Stevo's Avatar
Registered User
 
Join Date: Apr 2002
Location: NW WA
Posts: 6,296
If a brake caliper is sticking the wheel will be hot. Next time get out a feel the front wheels and you may find the problem.
__________________


1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
Reply With Quote
  #4  
Old 09-05-2010, 10:24 AM
Registered User
 
Join Date: Dec 2005
Location: Carson City, NV
Posts: 3,790
Stuck caliper. Often caused by the rubber hose supplying the caliper swelling inside and acting as a one way valve. This sounds like a good time to do a complete brake rebuild with rotors, loaded calipers, and hoses. I did this in the rear of my '83 shortly after I bought it. The parts ran a bit over $200 and the labor took me all of an hour and a half with just hand tools (in an abandoned parking lot-apartment living sucks sometimes).
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 367,xxx miles
08 Triumph Street Triple 30,xxx miles, lowered 10mm in front, Pirelli Angel GT tires, EBC HH brake pads, otherwise stock.
88 Jaguar XJS V12 93,xxx miles. I should be in the garage now.
Reply With Quote
  #5  
Old 09-06-2010, 02:22 PM
Registered User
 
Join Date: Mar 2010
Location: Freehold, NJ
Posts: 490
Now everything is working fine. I've been driving and not having the issues again. This happened after a little "spirited driving". I felt the wheel when I was up front and it noticed a little warmer than the others but nothing major?
Reply With Quote
  #6  
Old 09-06-2010, 08:58 PM
Registered User
 
Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
There is a good possibility a draggging caliper generated enough heat to boil the brake fluid. What happens is the resultant air compresses too easily when the fluid has boiled effectivly eliminating the brakes in that circuit. I have personally even had a caliper semi seize once and never again. At this stage of life I would have changed it and the rubber hose.

Very old brake fluid will boil much easier than newer fluid. It is hydroscopic in nature and absorbs more and more moisture over time. In an ideal world the brake fluid should be flushed once a year.

The payback is less corrosion in the lines and calipers. Plus the master cylinder. Your brake system will last much longer with periodic fluid changes saving you money.

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 01:18 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page