How to Repair Mercedes Benz 722 Transmission

This article show you guide on how to repair Benz 722 transmission trouble to adjust it. 

Mercedes Benz EPC

1. The intermediate lever #2 and notched lever #3 are held in relation to each other with two 10 mm hex head bolts,#4 and #4.(Figure 4)
2. Loosen these two bolts and adjust levers, as necessary, to arrive at the condition described in Step 4.
CONTROL PRESSURE LINKAGE ADJUSTMENT MODEL 280SE/8,300SEL/8-2.8.
To check:
1. The vertical push rod from the bell crank on the engine block to the injection linkage cross shaft should have free travel.
2. With the injection linkage in the idle position and the transmission control pressure rod fully back, the vertical rod should fit free when the free play is fully extended.

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Mercedes Benz 722 Transmission To adjust:
1. Adjust length of vertical push rod at ball joint ends.
CONTROL PRESSURE LINKAGE ADJUSTMENT, MODEL 220/8-SOLEX CARBURETOR
1. Disconnect rod between carburetors and remove dashpot. Carburetors must be in idle position.
2. Intermediate rod to rear carburetor must have free travel.
3. Disconnect intermediate rod to rear carburetor at intermediate lever. When fully extended, rod must fit tension-free.
4. Adjust intermediate rod ball ends accordingly.
5. Replace dashpot and reconnect carburetor connecting rod.
MODEL 220/8-STROMBERG CARBURETOR(Figure 5)
1. Disconnect pull rod (7) and push back to stop on transmission.
Adjust pull rod at ball joint (8) to fit free of tension.
2. With the carburetor in the hot idle position,(off choke, vacuumthrottle control clear) adjust control rod(i2) with bali joint(11)
to fit free when fully extended.

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Mercedes Benz W204 Engine Air Filter Replacement Guide

The air filters protect the air intake system, valves, pistons, cylinder walls, and engine oil from dust and debris that can be sucked in under normal operation. Every 10,000 miles or so, you should change the two engine air filters in your Mercedes-Benz.Here I will show a step-by-step guide on how to replace engine air filter for Benz W204.


Time: 30 minutes
Applicable Models:
Mercedes-Benz C350 (2008-15) Mercedes-Benz GLK350 (2010-15)

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Procedures:

Before replacing engine air filters you need to remove the engine cover,and please check:

How to Remove Benz C Class W204 Engine Cover

With the cover removed and turned upside down you can see the four clips(red arrows) that hold the cover/air filters in place.

Place the cover upside down on your work bench with a couple of rags under it to protect from getting scratched.The two air filters are located one on each side(red arrows)

Use a T25 Torx and remove the four Torx screws on each air filter housing(red arrows).The screws will not unscrew all the way out from the housing lid.

Remove the old filters and be sure to clean out the air boxes.You do not want to put a clean air in a dirty air box.Installation is the reverse of removal.

From Auto Repair Technician Home, post How to Replace Engine Air Filter for Benz W204

Benz C320 AC / Air Conditioner Trouble Repair Guide

Question:

Hi everyone….I have a 2003 C320 and have had this problem for some time and looking for some assistance. When I first start my car the AC will only blow warm air.



I was recently low on freon and had the hissing sound so charged it to the high amount to about 45lbs on the gauge–the max green. Before charging it was in the middle of the green range why I put it up at the max. Anyhow this was after driving it for some time and it blew cold while at idle and the pressure on the Climatic Control Diag #7 remained steady.

Next day I start my car and the Diag #7 showed about 30!! Put the gauge on and it showed extremely high. Well figured it worked the night before so would drive it and see what happens. Before my car operating temp warmed up I watched the number fluctuate and drop while I was driving and then rise when I was not moving at idle. It would kick the AC compressor off when it reached 31ish drop the pressure to about 29 then kick back on and cycle like that until I started driving again.

After the car warmed up to normal operating temperature it seemed the reading on the climatic control would not go above 20 and while driving went down to 10.

Is there something that will cause the pressure to rise when the car is not driving? I am not sure if it’s directly correlated to the operating temperature of the engine but does seem to be better when the car is warmed up.

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Here are the readings from my climatic; don’t know how to pull any error codes but none in MB STAR DAS.


Solution:

If you used that DIY freon kit your not helping take it to a shop where they have the proper equipment to service that system. You can blow a line overcharging it.
It seems that its low if the compressor is kicking off there may not be enough in the system to compress.
Ideally the ac equipment will give precise readings for the psi and see of there is a leak.
If there is enough in the system and the compressor is kicking on and off abnormally then the compressor is going out.
Had this issue in my AMG and I’m a tech so just my 2cents.

The pressures in the condenser getting up to 30bar is a bit alarming. There is definitely something wrong, don’t add anymore gas! Charging by pressure alone is very difficult for models with a variable compressor. You most likely have overcharged the system which is giving the very high pressures. I would suggest you get it evacuated, vac’d down and recharged properly. If the problem persists then you may have a sticking TX valve.


From Auto Repair Technician Home, post Benz C320 AC / Air Conditioner Trouble – Warm at Idle