Avtodizel ???-238??, Operating Instructions Manual, Page: 55 / 254

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Fig. 25. High pressure pump section:
1 – pump housing; 2 – lock nut; 3 – adjusting bolt; 4 – turn
bushing; 5 – ring gear; 6 – installing screw; 7 – air outlet plug;
8 – union; 9 – delivery valve spring; 10 – delivery valve; 11 –
delivery valve body; 12 – plunger barrel; 13 – plunger; 14 –
rack; 15 – upper spring retainer; 16 – tappet spring; 17 – lower
spring retainer; 18 – tappet; 19 – tappet roller; 20 – camshaft
In the pump housing 1 are installed the plunger pairs, delivery
valves 10 and unions 8, to which the high pressure pipelines are con-
nected. The delivery valve and its body – precise pair, which can be
replaced only completely.
The plunger 13 with the barrel 12 is the precise pair too. The
correct position of the barrel relatively pump housing is provided with
the screw 6.
The plunger13 is actuated from the camshaft 20 with roller tap-
pet 18. The spring 16 through the lower retainer 17 constantly presses
the tappet to cam. The tappet is fixed from turn with tappet retainer,