Removal and installation valve springs (OHV engine) (Opel Kadett D)

Note: To perform this work, you do not need to remove the cylinder head, although you will need a special holder KM-257 and a valve spring compressor KM-261. Otherwise, remove the cylinder head.

Removal

Remove the air filter with the heating hose, See paragraph 4.44.

Remove the cylinder head cover.

Unscrew the spark plugs of the corresponding cylinders.

Rotate the crankshaft to set the pistons of the same cylinder to TDC. Both valves will be closed. Both valves of the corresponding cylinder should have a noticeable gap between the rocker arm and the end of the valve stem.



Screw in a special valve holder tool KM-257 instead of the spark plug.

The locking pin, which enters the combustion chamber, is brought to the valve plate by turning the wing nut, see figure.

Lock the wing nut.

Unscrew the rocker arm nut.

Remove the rocker arm crackers and valve tappet.



Install a special tool - valve spring compressor KM-261 on the rocker arm stud.



Screw on the M8 nut with the washer and tighten it until the valve spring is compressed enough to release the crackers.

Remove the valve crackers.

Release the spring.

Remove the squeezer.

Remove the spring.

Installation

The new valve spring should be installed in reverse order using a valve spring compressor.

Install the valve tappet, rocker arm and crackers.

Tighten the rocker arm nut.

Unscrew the valve holder.

Install the spark plug and tighten it to 40 Nm.

Perform basic valve clearance adjustment on a cold engine, see paragraph 1.18.

Install and tighten the cylinder head cover.

Install the air filter with the heating hose.