The 2011 A4L B8 is currently driving 145000 kilometers, and there is a little oil leakage in the lower left corner of the valve cover. Based on the principle of not going to the repair shop if you can do it yourself, you decided to take the time to deal with it yourself.
First of all, prepare the torque wrench, the valve cover screw torque is 10 Nm.
Prepare high temperature resistant engine sealant for Volkswagen.
And other assistive tools (always on your own)
Tools to be used:
17 open wrench (disassemble high pressure oil pump outlet pipe)
T30 batch head + extension rod (valve cover screw, waste valve screw, vacuum pump screw)
T30 corner wrench (camshaft solenoid valve screw)
10 opening extension wrench (timing cover screw)
10 sleeves (timing cover screws)
T20 batch head (AVS solenoid valve screw)
12-angle M10 batch head (high pressure pump screw)
5-25 Nm torque wrench
Electromagnetic drill (can quickly remove screws)
One ratchet wrench
3 bottles of detergent
One bottle of high temperature resistant sealant
Tie 10 straps
First, after the change, the picture of the road test
5-25 Nm 1 ram 4 joint torque wrench
The tools are ready, the weather is good, and the yard of the community is open.
There is a little oil leakage in the location, and it becomes like this again three days after cleaning.
Take off the engine dust cover and take a look at the whole picture.
Zoom in to see where the oil is leaking.
Remove the waste gas valve, here need the ignition coil fixed screw loose, 8 AVS regulating valve plug unplug, easier to disassemble.
By the way, remove the vacuum pump and the high-pressure oil pump, there are also 3 T30 screws behind the vacuum pump, pay attention to the vacuum pump dismantling under a piece of cloth, there will be oil flow out.
There is an oil channel filter under the vacuum pump. Be careful not to drop it when you take it out. You can put it aside alone. It is recommended that you first loosen the two screws of the high-pressure oil pump and the vacuum pump for later installation!
Then remove the camshaft solenoid valve on the front timing cover, which is also 3 T30 screws, remove it patiently and slowly.
Check the sealing ring and replace the new one if necessary
The official cover is made of aluminum.
The last time I changed the cover, I made 10 lengthened wrenches to make it easy to remove the cover screws.
To demonstrate, this is how it works.
After removing the formal cover, take a look at the quality inside, chain, tensioner, slide rail has been changed to the improved model.
This is the removed accessory, and the high-pressure oil pump and vacuum pump lines are connected to it.
The camshaft is tied up with a tie to avoid tilting too much, which is not convenient for the later installation of the valve cover.
By this point, the valve chamber should have been completely removed. Huang Cancan!
The next step is to clean up the residual glue, especially on the top of the valve cylinder, with a blade shovel while holding a vacuum cleaner to prevent it from falling into the engine facade and clogging the oil passage.
The valve cover will be taken home and served with oil cleaner and flushed with water.
The way the valve chamber should be taken off, the original sealant has aged and hardened and is difficult to clean.
Small awl little by little shovel, shovel and then take home cleaning agent to clean.
After cleaning the appearance, do not glue first, compare the trial installation, at this time to manually dial the camshaft position adjusted by AVS, can not conflict with the valve cover bearing, otherwise the installation will damage the valve cover bearing.
Ordinary glass glue gun engine sealant, can be used normally.
When the glue is done, there are too many places, and some of the blades are scraped off.
Gluing details
Adjust the torque wrench to 10 Nm and start assembly.
Confirm again, the electric drill with T30 batch head first pre-tighten the screw.
Tighten the screws in turn from the middle to the four sides.
The AVS regulating valve sealing ring that was replaced 4 years ago has been aged. Let’s change it this time.
After the installation, the glue is pressed out, and the whole is OK.
Here also look at the shape of the sealant extrusion.
Replace all the parts in turn.
At this time, make sure that all the plugs and screws are in place, and the vehicle can be started. After starting, idle for about 5 minutes, no abnormal, no abnormal driving on the road. Pack up the tools.
The total time this time is 4 hours. There are many attachments to be dismantled, which requires enough tools and patience. Half of the car owners are not advised to do it themselves, because they need more tools.
So far, there has been a round trip from Ningbo to Shaoxing, plus urban use, about 500km, vacuum pump cushion, timing cover cushion, camshaft solenoid valve cushion, AVS regulating valve, valve cover, there are no oil stains.
After a point, remember to replace the cover behind the intake camshaft, the original car without steps, aging for a long time, will be sucked into the valve chamber. Can use the crankshaft front tensioner to observe the plug cover, the size is the same, and this cover with steps, will not be sucked in, before installing the high-pressure oil pump, the cover can be smeared with sealant.
1Accord 2 sleeve box is broken. Buy an empty box on Taobao and carve a card slot for your tools.
TroyGeordie 
5 
September 2, 2024 
