Vedeneyev M-14P, Maintenance Manual

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11. REQUIREMENTS FOR STORAGE GROUNDS
Arrange the engines prepared for storage on specially equipped grounds.
The engine storage grounds should be organized on dry non-flooded areas, cleaned of grass and
litter and be provided with drainage facilities.
The grounds should be equipped with special supports to protect the engines against ingress of
water and ensure ventilation of the container lower portion. The support height depends on the local climatic
and soil conditions but should not be less than 300 nun.
Arrange the containers with engines on the ground so as to allow free access to them for inspection.
When storing the engines on grounds under sheds, the latter should protect the containers with
engines against direct sun rays and rainfalls.
The shed may be of any construction and material. The shed construction should provide for drain of
water to the drain ducts.
The clearance of at least 50 mm should be left between the boxes placed in storage and the shed.
12. INSPECTION AND CARE OF ENGINES IN STORAGE
Inspect all the containers in storage and check color of silica-gel indicator through the container
inspection ports once in three months. When silica-gel indicator turns fully pink, replace silica-gel dehydrator
and silica-gel indicator and inspect the film cover.
Replace silica gel and repair the damaged cover indoors according to the effective Instructions. The
room temperature should not be below 10 °C.
Clean the engine storage grounds and their drainage system regularly of grass and litter.
At snow thawing, remove snow from and around the containers.
13. FORMALIZING OF TECHNICAL DOCUMENTS IN STORAGE
Enter the following information in the Log Books of engines and accessories and in the inspection
Register (for spares and accessories without Log Books):
Date of engine placement in storage.
Results of periodic engine inspections in storage.
Date of repair of the film cover.
Condition of silica-gel indicator and date of silica gel replacement.Each move of the engines,
accessories and spares during the entire storage period from the outdoor storage place to indoor storage
and back.
All entries should be made by the head of storage department (section) or senior technician of the
department with applying a stamp.
ENGINE FRONT - DESCRIPTION AND OPERATION
1. GENERAL
The engine front comprises gearbox (Ref. Pig. 1), gearbox housing (10) (Ref. Pig. 2) accommodating
airscrew shaft (1) and the planetary train.
The engine gearbox is intended to reduce the crankshaft speed to the airscrew shaft speed.
the required airscrew speed is obtained by using a spur gear planetary train between the crankshaft
and the airscrew shaft (Ref. Fig. 1).
The gearbox increases engine power by increasing crankshaft speed while maintaining moderate
peripheral velocity of the airscrew blades. At take-off rating the crankshaft rotates at a speed of 2900 r/min
while the airscrew makes 1908 r/min.
When the crankshaft rotates, drive gear ring (17) (Ref. Fig. 2) turns satellites (15). Meshing with sun
gear (29) of the gearbox, the satellites roll around it and move the airscrew shaft in the direction of crankshaft
rotation.
The M-14P engine gearbox transmission ratio is 0.658.
The gearbox housing carries the airscrew speed governor. The speed governor drive is located on
the bracket of the crankshaft thrust bearing front cover.
2. CONSTRUCTION
2.1. GEARBOX HOUSING