Removal the valve stem seals
Remove the camshafts.
Vehicles with BLR, BLX, BVX and BVY engines
Note: To replace the valve stem seals for the exhaust valves of cylinders 3 and 4, the EGR valve must also be removed.
Continuation of installation operations for all vehicles
Remove the roller arms and place them on a clean surface. Do not swap the roller arms.
Remove the spark plugs with a spark plug wrench.
Fig. 2.117. Installing the plate
Fasten the guide plate to the cylinder head using knurled bolts as shown in Figure 2.117.
Bring the piston of the corresponding cylinder to "bottom dead center".
Screw the adapter into the spark plug socket and connect compressed air at a pressure of at least 6 bar.
Fig. 2.118. Separating crackers
Loosen tightly seated valve crackers with a mandrel and plastic hammer (fig. 2.118).
Screw the fixture with the hanging fork into the guide.
Insert the mounting chuck into the guide plate.
Fig. 2.119. Installation of compression and decompression devices
Attach the push fork to the fixture (fig. 2.119).
Fig. 2.120. Hanging the push fork
Note: On the outlet side, the push fork should be suspended as shown in Figure 2.120.
Press the mounting cartridge down. At the same time, turn the knurled bolt of the mounting cartridge to the right until the ends enter the valve cotters.
Turn the knurled bolt back and forth slightly, this will cause the valve crackers to expand and engage the cartridge.
Release the push fork.
Remove the mounting cartridge.
Fig. 2.121. Cap remover
Remove the valve stem seals using a puller (fig. 2.121).
Fig. 2.122. Mandrel for pressing out
If the 3364 puller cannot be used due to lack of space, press out the pin with a mandrel and remove the attachment (fig. 2.122).
Fig. 2.123. Installing the 3364 oil seal remover on the oil seal
Place the lower part of the 3364 puller onto the oil seal (fig. 2.123).
Insert mandrel 1 into the hole at the bottom of the puller.
Use a lever to pry up the mounting device and remove the oil seal.
Installing valve stem seals
Fig. 2.124. Installing the oil seal
[The article is posted on this website: vwmanual]
To avoid damaging the new valve stem seals B, a plastic sleeve A must be placed on the valve stem (fig. 2.124).
Lubricate the working edge of the valve stem seal B with engine oil, insert it into the pressing tool and carefully press it into the guide sleeve.
Remove the plastic sleeve A.
Insert the spring and valve spring retainer.
Install the mounting fixture as shown in Figure 2.119.
Note: After removing the valve cotters from the mounting cartridge, they must first be inserted into the mounting fixture.
Press the mounting cartridge from above onto the mounting fixture and, once installed, secure the valve crackers.
Press the mounting chuck down with the push fork and turn the knurled bolt of the mounting chuck back and forth while pulling it up.
Release the pressure fork with the knurled bolt pulled out.
Remove the valve pin installation and removal tool.
Further installation and assembly is carried out in the reverse order of removal.
Visitor comments