Before installing the pump, check the protrusion of the plunger. To install the pump correctly, use two of the three gaskets listed below: A — 0.27–0.33 mm thick; B - thickness 0.70-0.80 mm; B — 1.10-1.30 mm thick. Installation is performed in the following order. Install the heat-insulating spacer with a pusher, placing gasket A under it (figure 26), and on the plane in contact with the pump, place gasket B. Measure the size d (maximum tappet protrusion, established by slowly turning the engine crankshaft). If the size d is within 0.8-1.3 mm, the pump is fixed. If the size d is less than 0.8 mm, then the second gasket A is installed instead of the gasket B; if the dimension d is greater than 1.3 mm, then gasket B is replaced with gasket B. The dimension d is checked again and the pump is secured to the engine. Gasket A should always be under the heat-insulating spacer. Gaskets A, B and B are interchangeable with the corresponding gaskets of previous car models.
The text is copied from the online portal: VAZbook