Repair of solenoid block of automatic transmission A604
Required tools and materials:
* Set of socket wrenches
* Phillips screwdriver
*Pipe wrench
* Cleaning solvent
* Solenoid block repair kit
* New transmission oil (ATF)
Repair procedure:
1. Removing the solenoid block
* Disconnect the negative terminal of the battery.
* Raise the car and place it on stands.
* Locate the solenoid block under the automatic transmission oil pan.
* Disconnect the electrical harness from the solenoid block.
* Unscrew the bolts securing the solenoid block to the automatic transmission pan and remove it.
2. Disassembling the solenoid block
*Use a Phillips head screwdriver to remove the solenoid block cover.
* Remove the solenoids and o-rings from the block.
3. Cleaning
* Clean all solenoid assembly components with cleaning solvent.
* Pay special attention to the contact surfaces of the solenoids and o-rings.
4. Repair
* Replace damaged or worn O-rings from the repair kit.
* If the solenoids are faulty, replace them with new ones.
5. Assembling the solenoid block
* Lubricate the O-rings with transmission oil.
* Install the solenoids into the block and secure them with bolts.
* Install the solenoid block cover and tighten the bolts.
6. Installation of the solenoid block
* Attach the solenoid block to the automatic transmission pan and tighten the bolts.
* Connect the electrical harness to the solenoid block.
7. Changing transmission oil
* Drain the old transmission oil from the automatic transmission.
* Replace the oil filter.
* Fill with new transmission oil according to the manufacturer’s recommendations.
8. Testing and setting
* Start the car and let it idle.
* Shift the gear lever to different positions and make sure that the gearbox operates smoothly.
* If any problems occur, check that the solenoid block is installed correctly and the electrical connections are made correctly.
Notes:
*Before starting any repairs, please read your vehicle’s service manual.
*Use only high quality repair parts.
*Observe correct bolt tightening order.
* Drain gear oil into an appropriate container and dispose of it in accordance with local environmental regulations.