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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | 2002 G500 brakes pulling hard new problem: after sitting overnight and driving first for the day my brakes pull hard left when I push the brakes harder down it goes dead straight and it continues to do so for the rest of the day until the next scare morning drive any insight guys? | ||
#240327 | |||
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TexWagen Veteran Date registered: May 2006 Location: Houston, Texas Vehicle(s): 2003 G500 Posts: 115 | Re: 2002 G500 brakes pulling hard just a guess, but I'd say to look for a brake line leak on the right side somewhere | ||
#240337 - in reply to #240327 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | Re: 2002 G500 brakes pulling hard TexWagen - 1/6/2019 9:55 AM just a guess, but I'd say to look for a brake line leak on the right side somewhere then the brakes would not come back - but they do maybe a sticking caliper maybe the ABS unit | ||
#240338 - in reply to #240337 | |||
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Gfun Member Date registered: Dec 2010 Location: Czech Republik Vehicle(s): W463 G300td 97 Lwb Posts: 8 | Re: 2002 G500 brakes pulling hard hi Harald, I had similar problem, ques its completelly different to yours but. My lovely dog love piss on my left front Wheel , specialy front left which is out of wall where i parking car. This caused slight corrosion, sometime also on rear which is drum, on my baby so nothing to do. Every next driving start with almost locking of left front brake first braking, then i make sst plate cover over the Wheel. looks as police boot, but its working.I use G just as weekend warior, or how to say "On any Sunday" Your isue will be probably sticking piston.Try change fluid , blow more volume run through just to be sure no air is there. Then no other action then take out brake pads and with helper try how pistons still move. | ||
#240339 - in reply to #240327 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | Re: 2002 G500 brakes pulling hard I will open the right wheels tomorrow fluid change came to my mind as well - has been many years without I have been in a wheelchair for almost 2 years and have not been able to do the necessary TLC | ||
#240341 - in reply to #240339 | |||
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BigSek New user Date registered: Apr 2018 Location: Vehicle(s): 2003 G500 / 2002 BMW M5 Posts: 3 | Re: 2002 G500 brakes pulling hard Interested in what you find. My new to me 03' G500 is doing something similar. For me, it only occurs when I start braking with a quick stab at the brake pedal which will initially pull slightly to the left and then straighten out quickly the deeper I get into the pedal. A bit disconcerting but never feels uncontrollable. If I gently start braking it will remain in a dead straight line and not pull left. Odd, my first thought was that it might be the BAS system that applies extra force in "emergency braking" situations that might be distributing the power in a weird way when I initially depress the pedal a little too quickly. | ||
#240343 - in reply to #240327 | |||
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AlanMcR Expert Date registered: Apr 2006 Location: US, CA, Los Altos Vehicle(s): G300DT E300DT 230SL Posts: 3500 | Re: 2002 G500 brakes pulling hard In my experience BAS kicks in quite violently and won't let go until you get off the brake pedal. "Thrown into the seatbelt" braking. BAS operates on the brake booster and mechanically stomps on the brake pedal for you by actuating the booster fully. I would expect that Harald's problem is caliper corrosion/stickiness. MB recommends a two year flush cycle on all brake and locker systems. Whether they are used or not. The problem is moisture being absorbed into the fluid. Not as big an issue down in La Paz due to low relative humidity, but still needs to be attended to. Harald, good to hear that you are getting around more! | ||
#240344 - in reply to #240343 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | Re: 2002 G500 brakes pulling hard today my "reset" (stepping on the brakes very hard) did no longer work so I had to be very careful around town then, after driving for 30 minutes, the system normalized and worked fine will take it for another test drive front right disk looks nice and shiny, indicating that the pads are engaging but not as hard as the left | ||
#240348 - in reply to #240344 | |||
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Otiswesty Administrator Date registered: Jun 2007 Location: Portland, Oregon Vehicle(s): 463.241, 461.213 Posts: 3003 | Re: 2002 G500 brakes pulling hard Maybe just a little sticky from sitting and not being driven. My 280GE brakes were draqging a little and felt uneven the first couple months as well. Now they are fine, I did nothing except to burn a couple tanks of gas. | ||
#240349 - in reply to #240348 | |||
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GwagenLover Extreme Veteran Date registered: Apr 2006 Location: Winston Salem, NC USA 27104 Vehicle(s): 2016 G550 & 2016 GLE350 Posts: 473 | Re: 2002 G500 brakes pulling hard Buy a brake hone and then hone the calipers. (not very expensive,) You obviously have a sticking piston. The job is actually very easy. Be careful when waving the air hose over the inlet, as it will most definitely mash your fingers when the piston comes out. Keep your fingers away from the pistons. Getting the air bled out is the tough part. Edited by GwagenLover 1/9/2019 7:14 AM | ||
#240352 - in reply to #240327 | |||
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G-AMG G-Class DIY Host Date registered: May 2006 Location: South Texas Vehicle(s): '04 G55, '80 280GE, '99 S420, '98 E320, 2011 E350 | Re: 2002 G500 brakes pulling hard GwagenLover - 1/9/2019 7:10 AM Buy a brake hone and then hone the calipers. (not very expensive,) You obviously have a sticking piston. The job is actually very easy. Be careful when waving the air hose over the inlet, as it will most definitely mash your fingers when the piston comes out. Keep your fingers away from the pistons. Getting the air bled out is the tough part. Boy, I don't know if I would go grinding away on the Caliper Bore with a Hone. WIS sounds like the Pistons/Bores are pretty darn 'Delicate', as noted in attachment. (Caliper.jpg) Attachments ---------------- Caliper.jpg (82KB - 0 downloads) | ||
#240353 - in reply to #240352 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | Re: 2002 G500 brakes pulling hard I have gone through all the manuals and done some reading early 463 calipers were rebuildable - 2000 and later are not still searching for the cause will start with replacing the fluid | ||
#240356 - in reply to #240352 | |||
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hipine Date registered: Jul 2006 Location: US, CO, Bailey Vehicle(s): 460 1980 280GE w. 617A | Re: 2002 G500 brakes pulling hard 4x4abc - 1/9/2019 8:40 AM I have gone through all the manuals and done some reading early 463 calipers were rebuildable - 2000 and later are not still searching for the cause will start with replacing the fluid Just because it's easy to do, I'd check for damage to the hub, bearings, or play in the wheel hub. The only symptom of my G's right front hub being in six pieces was a long pedal travel. Good luck Harald! -Dave G. | ||
#240389 - in reply to #240356 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | Re: 2002 G500 brakes pulling hard so, finally opened up the patient pistons in caliper are moving freely however, I could not bleed any of the 3 bleeders turning on engine, stepping brake - pistons are not moving forward looks like no brake pressure gets to the front right wheel the only thing between the master and the brakes is the ABS unit now what? | ||
#240413 - in reply to #240389 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | RE: 2002 G500 brakes pulling hard did some reading sounds like the ABS pump has one or more sticking solenoids not changing the brake fluid will do that for you I have never changed the fluid in 15 years new ABS pump around $1,400 - used around $70 I'll try compressed air before I order the part | ||
#240414 - in reply to #240327 | |||
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AlanMcR Expert Date registered: Apr 2006 Location: US, CA, Los Altos Vehicle(s): G300DT E300DT 230SL Posts: 3500 | RE: 2002 G500 brakes pulling hard 4x4abc - 2/7/2019 10:37 PM did some reading sounds like the ABS pump has one or more sticking solenoids not changing the brake fluid will do that for you I have never changed the fluid in 15 years new ABS pump around $1,400 - used around $70 I'll try compressed air before I order the part I have wondered how rebuildable those are. Can't hurt to try. | ||
#240416 - in reply to #240414 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | RE: 2002 G500 brakes pulling hard several examples of repair on youtube but mainly it is the circuit board with pins that need re-solder (like the K40 issue) haven't seen anyone going into the solenoids today I took the line from front right off the ABS pump the line is clear so, it is inside the pump I remember one of the video showed corrosion on the valve parts as to them, fresh brake fluid has anti corrosion properties that go away with time since you have different metals inside the ABS pump since bathed in a fluid, particles move from one to the other - causing buildups that make the valves stick so, tomorrow I will drain the block of the ABS pump completely and bathe it in penetrating oil if that does not work, I will use compressed air the line to each wheel has 3 solenoids the one allowing fluid to go back to the reservoir is open as I was able to push back the pistons easily but I can not suck fluid from the reservoir to the wheel that solenoid is stuck shut - unless it is an electrical problem and the solenoid does not get any power to open we will see | ||
#240417 - in reply to #240327 | |||
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4x4abc Date registered: Apr 2006 Location: La Paz, Baja California, Mexico Vehicle(s): 02 G500 | RE: 2002 G500 brakes pulling hard no luck with compressed air will have to get a new one | ||
#240423 - in reply to #240327 | |||
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