Vedeneyev M-14P, Руководство по обслуживанию, Страница: 198 / 381

2. DESCRIPTION
Oil from the tank is fed to the oil pump via an oil line through the oil inlet connection, mesh filter in the
rear cover and inner space of the driven shaft to the oil pump delivery section (Ref. Fig. 1).
Oil under pressure from the delivery section of the oil pump is fed to the space of the oil pump drive
shaft, then through the hollow vertical shaft, radial holes in its walls to the annular racess of the vertical boss of
the crankcase rear cover to lubricate the bushings of the upper and lower supports of the vertical shaft.
Oil from the annular racess of the vertical boss is supplied to the attachment flanges of the tachometer
generator drive, compressed air distributor and compressor to lubricate these drives and their accessories.
Further oil flows through drilled passages to two grooves for the magneto drive housing for lubricating
these drives and to the twin gear of the blower impeller drive.
Oil is delivered to the bearings of the drives of the tachometer generator, compressed air distributor,
compressor and magnetos through the recesses, flats and radial holes in the drive housings.
The bulk of oil fed from the annular racess in the vertical boss of the crankcase rear cover is fed
through a passage to the central boss of the crankcase rear cover and is branched in two directions:
Through the drilled passage to the aligning recess for the generator drive housing and further through
the passage drilled in the generator drive housing stiffening rib to the inner annular recess to lubricate gear
bearings.
Through radial drilled passages in the drive gear to the space of the drive shaft connected with the
space in the main journal of the crankshaft rear section. A part of oil from the drive shaft space passes through
drilled holes to lubricate support necks of the drive gear, drive shaft and blower impeller shaft.
From the crankshaft rear section main journal space, oil gets through drilled passages in the web to the
space of the crankpin and then the oil flow is divided into three directions:
Through two oil intake pipes to the flat of the crankpin to lubricate the crank mechanism.
Through the calibrated orifice in the jet driven into the web of the crankshaft front section to the
crankcase for additional lubrication of the cylinders, pistons and connecting rods.
Through the passage in the web of the crankshaft front section to the space of the crankshaft front
section end.
Two oil intake pipes installed in the crankpin space and serving as an oil cleaning centrifuge supply
clean oil to the crank-mechanism parts.
During rotation of the crankshaft, heavier particles contaminating the oil are rejected by centrifugal
force to the base of the pipe protruding part, while clean (lighter) oil gets through the pipes to the master
connecting rod bushing.
Oil from the gap between the master connecting rod bushing and the crankpin of the crankshaft flows
through radial passages in the bushing and in the lugs of the master connecting rod to the space of the
articulated rod pins from which it is fed through two radial passages to lubricate friction surfaces of the
articulated rod big end bushings.
The cylinder surface, pistons, pins and bushings in the connecting rod small ends are lubricated by oil
squirted from the gaps of the crank mechanism and from the oil jet of the crankshaft.
The crankshaft bearings are also splash-lubricated.
Oil from the crankshaft front section space is fed through the radial hole in the shaft
end, through the spacer to the cam plate bushing.
The gears and bearings of the timing mechanism, the cam plate and speed governor drive are
lubricated by oil splashing.
The tappets and parts of valve mechanisms, needle rollers and rocker rollers, valve springs, spherical
surfaces of tappet push rods and inlet valve stems of cylinders Hos 1, 2, 8, 9 and the exhaust valve stems of
cylinders Nos 1, 2, 3, 8, 9 are pressure lubricated with oil supplied from the gearbox housing.
Other tappets and parts of the valve mechanisms are lubricated with oil gravitating to them through the
gap between the tappets and their guide bushings.
Oil from the crankshaft front section end space flows to the airscrew shaft space to lubricate the
bushing pressed in the crankshaft end and serving as the airscrew rear support.
Further the oil flows along the airscrew shaft passage.
Oil is fed through a flat and a special passage in the airscrew shaft to the annular space between the
spacer and the airscrew shaft, from the annular space the oil is fed via special passages of the airscrew shaft to
the annular groove in the airscrew shaft.
From the annular groove the oil is supplied through the passages in the satellite cage to the satellite
pivots. From the satellite pivots the oil is fed through the passages for lubricating satellite needle roller bearings.
The front ball bearing is lubricated with oil fed from the gearbox housing jet. Other gears and friction
parts of the gearbox are lubricated by splashing.