Tools and Materials:
- New Auto Transmission Cooling Hose (Refer to your vehicle's specific model and year for the correct part).
- Hose Clamps or Worm Drive Clamps
- Flat-head screwdriver or pliers
- Safety glasses and Gloves
Step-1: Preparation
1. Park your car on a level surface and turn off the engine. Allow the engine to cool down.
2. Engage the parking brake and secure your car. If possible, lift or elevate the front of your vehicle to gain easier access underneath.
Step-2: Locate the Auto Transmission Cooling Hose
1. Open the hood of your Mercedes 190E.
2. Locate the automatic transmission cooling hose. It's usually made of rubber and is connected between the transmission and the radiator. The transmission cooler hose typically begins at the bottom tank of the radiator and goes to the transmission cooler (heat exchanger).
Step-3: Disconnect the Hose
1. Place a container underneath the hose connections to catch any fluid that might leak.
2. Use a flat-head screwdriver or pliers to carefully pry open the hose clamps or worm drive clamps securing the hose to the radiator and the transmission cooler.
3. Gently remove the old hose, taking note of how it's routed and connected.
Step-4: Install the New Hose
1. Take your replacement transmission cooler hose and make sure it's routed properly.
2. Slide the new hose onto the connectors at both ends. Make sure the hose is secured without leaks or kinks.
3. Reinstall the hose clamps or worm drive clamps to secure the new hose. Tighten the clamps securely, ensuring a good seal.
Step-5: Checking Connections
1. Once the new hose is installed, double-check to make sure all connections are tight and secure.
2. Lower your vehicle if it was elevated earlier and start the engine.
Step-6: Check for Leaks
1. Run the engine for a few minutes and look under the car for any transmission fluid leaks.
2. Examine the hose connections to make sure they are secure. Make any necessary adjustments if leaks are noticed.
Step-7: Clean Up
1. Clean up any spilled transmission fluid if necessary.
Remember, if you're unsure or uncomfortable performing this task yourself, it's advisable to seek the assistance of a qualified mechanic to replace the auto transmission cooling hose for your Mercedes 190E.
