Vedeneyev M-14P, Maintenance Manual

Page: 238 / 381

FILTER 8D2.966.064 - DESCRIPTION AND OPERATION
1. GENERAL
Filter 8D2.966.064 is intended to clean fuel of mechanical impurities in the airplane fuel system.
The filter operates on the principle of retaining mechanical particles contained in the fuel flow by means of a
mesh partition.
The filter includes a filtering element and a by-pass valve. The filter is installed on the airplane. 2.
DESCRIPTION
The filter (Ref. Fig. 1) comprises a housing with valve assembly, cover, filtering element.
The housing has inlet and outlet threaded holes for connecting the pipelines. Valve (5) arranged near the
housing outlet hole is pressed by spring (6) to disk (7).
To preclude flow of fuel between the disk and the housing, sealing ring (8) is lodged in the disk groove.
Filtering element (3) installed with its flange in the disk hole comprises flange (9) • whose groove has
sealing ring (10), body (11) and bottom (12).
Body (11) is a corrugated cylinder and two holders (14). The cylinder is manufactured of wire mesh housing
rigid metal frame (13).
The corrugated cylinder and metal frame are welded at the end faces. Flange is welded to one end of the
body and the bottom to the other end.
The cover has a hexagonal head for the wrench and is screwed into the housing.
2.2. SPECIFICATIONS
Filtration fineness:
Nominal 36
µ
m
Absolute 40
µ
m