The accessory drive shaft is a hollow cemented steel part. The rear part of the shaft has involute
splines whereby it is connected with the internal splines of the drive bevel gear of the rear cover drive.
Two copper-plated bands in the rear part of the shaft are intended for aligning the shaft relative to the
drive bevel gear of the rear cover drive (the rear band) and for sealing the oil gallery (the front band).
Three through radial holes on the rear cylindrical band serve to supply oil from the rear cover oil
passage to the shaft space being a part of the engine oil gallery.
The middle part of the shaft has a disk with five double projections to mount the blower coupling.
Two support necks on the middle part of the shaft are supports for the impeller shaft.
One radial hole for supply of oil to the impeller shaft sliding bearings is made between the necks.
The accessory drive front portion has involute splines for mounting the drive shaft coupling provided
with internal and external splines; the coupling is fixed with retaining ring (11) against lateral displacement.
The external involute splines of the coupling enter the rear main journal of the crankshaft and is
aligned on the latter by the locating band with sealing the oil gallery joint.
Adjustment ring (10) disposed between the coupling front end and retaining ring is needed to obtain
required axial clearance between the blower drive parts.
The rear end of the coupling thrusts through a spherical bronze ring against a spherical bearing
secured on the mixture collector, while the accessory drive shaft bears against the coupling through the
adjustment ring.
Thus, axial displacement of the accessory drive shaft towards the rear cover ia limited;
displacement towards the intermediate crankcase is restricted by the impeller shaft which bears
through the spacer and spherical bronze ring against the spherical bearing of the mixture collector.
The working end faces of the blower drive parts (coupling, spacer, spherical ring and impeller shaft)
are grooved to improve lubrication of friction surfaces.
The blower coupling (Ref. Fig. 4) is assembled on the accessory drive shaft.
The coupling protects the drive parts against overloads at abrupt changes in engine operating
conditions and serves to decrease torsional stresses in the drive parts.
The blower drive coupling comprises the following parts: gear (4), five cylindrical helical springs (2),
five pairs of plates (1) and (3) and fasteners.
Содержание M-14P
Страница 6: ...19 Engine M 14P Front View Figure 1...
Страница 7: ...20 Engine M 14P Rear View Figure 2...
Страница 27: ...40 Arrangement of Airborne Tools in Case Figure 1...
Страница 39: ......
Страница 44: ...57 Engine M 14P Test Run Chart Figure 201...
Страница 67: ...80...
Страница 163: ...176 Crankshaft Thrust Ball Bearing Front Cover Figure 1 Intermediate Crankcase Figure 2...
Страница 166: ...179 Intermediate Grankcase Front Portion Figure 3 Intermediate Crankcase Rear Portion Figure 4...
Страница 173: ...186 Front view Cylinder Figure 1 Rear view...
Страница 174: ...187 1 Inlet Valve 2 Outer Spring 3 Inner Spring 4 Split Retainer 5 Valve Plate Inlet Valve Figure 2...
Страница 178: ...191 Intake Pipe of Cylinders Nos 4 5 and 6 Figure 4 Piston Piston Rings and Piston Pin with Plugs Figure 5...
Страница 180: ...193 Timing Mechanism Schematic Diagram Figure 6 Cam Plate Figure 7...
Страница 189: ...Blower Longitudinal Section View Figure 1...
Страница 191: ...Rear view Mixture Collector Figure 2 Diffuser Figure 3...
Страница 194: ...1 Plate 2 Spring 3 Plate 4 Gear 5 Accessory Drive Shaft Blower Coupling Figure 4...
Страница 204: ...Oil Sump Figure 4...
Страница 216: ...Engine M 14P Gear Train Figure 1...
Страница 247: ...Carburetor AK 14P Operation Diagram Figure 1...
Страница 249: ......
Страница 267: ...OPERATIONS AND TECHNICAL REQUIREMENTS CORRECTIVE ACTIONS CH ECKED BY Carburetor AK 14P Right Side View Figure 201...
Страница 273: ...Carburetor Altitude Control Needle Position Versus Barometric Pressure Barometric Graph Figure 203...
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Страница 288: ...T t en 0 CO 0 T K D fi h0 Ol f 01 3 0 F4...
Страница 293: ......
Страница 309: ...SPARK PLUG SD 49SMM MAINTENANCE PRACTICES 1 LIST OF TASK CARDS Title Task Card Uo Removal 201 Installation 202...
Страница 344: ...Generator Electrical Connection Diagram Commutator Side View Figure 3 1 Main Pole 2 Interpole...
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