R129 soft top 'Hydraulic System' ultimate thread

[lynns]

If you want to get an understanding of the R129 Convertible Top Hydraulic Cylinder System take a look at these posts.

Function Description of Roadster Soft Top and RST Troubleshooting PDF's

soft top tool / wrench p/n # 1295810066

DIY: R&R of the Convertible Top Release Cylinders

Dennis Ficken contact information (e-mail address, phone #, mailing address

Remanufactured Hydraulic Cylinders - BENZWORLD MEMBER DISCOUNT

**Hydraulic system fluid renew on MY90-98

**Hydraulic system fluid renew on MY98-02

There are twelve cylinders that work the soft top and roll bar for a total of $3,496.00 US MSRP for parts alone

seal size is 6mm ID x 14mm OD x 5.7mm thick U-CUP Polyurethane Rod Seal

Seal and O-Ring dimensions

Easy to remove & rebuild ALL R129 Hydraulic Cylinders on MY90

Make sure you take pictures of all of your hydraulic soft-top cylinders before you remove them

Repairing Leaking Top Cylinders Inexpensively

Pictures of where soft top hydraulic cylinders leak.

Hydraulic cylinder repair photos

Adjusting Soft top & Hard top (Front & Back)

POLL - Convertible Top Hydraulic Cylinder R&R

hydraulic leak at rear wheel, the most expensive cylinder: 129 800 17 72 is $700

91sl oil leaking front right rear wheel soft top controller might need to be "reset"

Removal Of Rear Panels; Step-by-Step

I used the following video clip link (Tail) to help to remove storage compartment

Main Hydraulic Cylinder Removal

Main Hydraulic Cylinder Removal

this is really a fairly easy repair, take your time and have fun doing it

Don't be fooled by the complexity of the 129 SL. It is actually a comparatively easy car to work on

1991 front hydraulic Distributor leak

MB decided to use a 'custom' size urethane seal in lieu of an o-ring within the hydraulic piston

limit switch for the convertible top in compartment is in the area shown

i fix the leak in my 1998 sl500, by adding NO LEAK brand powering steering fluid to my resorvior

fluid in front of the rear tire would suspect seal for the main lift cylinder

all 12 cylinders were leaking and my stealer wanted nearly $5K for parts

if you take it into Stealer they recommend replacing all cylinders at once to save on labor

Oil leaking from Sunvisor hinge due to front hydraulic cylinder M-B p/n 129 800 1672

Hydraulic leak just in front of rear wheel -can anyone ID

Hydraulic leak just in front of the passengers side rear wheel

R129 Hydraulic fluid M-B p/n 00989910310 or Febi-Bilstein p/n 02615 at about $10-$20/liter US

picture of hydraulic pump and location

hydraulic reservoir is located in the trunk under the spare tire plastic shield

2000 SL soft top stuck in compartment

Manual Release with Soft Top Tool

Manually locking the RST front and rear.

**How to remove the hard top and put the RST(roadster soft top) up manually

opening rear soft top compartment when hydraulics are dead...

rear soft top compartment wrench p/n # 1295810066

I did the re-set/re-synch deal at least 5 times before it worked

R129 soft top 'Controller' ultimate thread

[RedLiner]

Just for reference this is the hydraulic pump that supplies the fluid to the operating cylinders.
It is located in th trunk under the plastic covering that the spare wheel fits on to.
There are Max and Min fluid marker lines which are about 2.54cms/1" apart.
The reservoir in the photo is filled to the Maximum level.
Note: entire system holds 1.25 Liters of fluid

MY90-98 SL pump showing return line on the top of the reservoir.


MY98-02 SL pump