Pic. 5.30. Elements of the lubrication system:
1, 17 - Oil seals; 2 - Cover; 3 - Oil level indicator; 4 - Guide sleeve; 5 - Oil pressure sensor (0.25 bar) (only on AFT and AD2 engines); 6 - Oil pressure sensor (1.8 bar); 7 - bypass valve; 8 - Oil pressure sensor (0.3 bar) (only on 1F engine); 9, 14, 15 - Bolts; 10 - Oil filter bracket; 11 - Oil filter; 12 - Oil pump gears; 13 - Oil pump with bypass valve (5.7-6.7 bar); 16 - Drain plug; 18 - Pallet; 19, 23 - Gaskets; 20 - Oil intake; 21 - Oil separator; 22 - O-ring.
Checking the clearance between the pump gears with a feeler gauge is shown in fig. 5.31 Clearance of the new pump: 0.05 mm, allowable wear: 0.20 mm.
Checking the axial clearance of the oil pump is shown in fig. 5.32. Permissible wear: 0.15 mm.
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