Yak 52 Emergency Air Tank
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In Hydro till March 2025
Note Nanchang CJ-6 and Yak 52 bottles are not directly interchangeable. The second photo shows the difference in angles between the delivery port and the drain valve.
On Sale
On Sale
Nanchang CJ-6, emergency air bottle
Note Nanchang CJ-6 and Yak 52 bottles are not directly interchangeable. The second photo shows the difference in angles between the delivery port and the drain valve.
Air Compressor shear coupling - M14-P
Used on all M14 engines with Air Compressor. Price shown includes $10 electronic refund on receipt of your sheared core.
Air Valve - Factory Overhauled Yak 52
Main or Emergency Air Valve in either cockpit.
Legend has it these can be serviced...That hex on the valve gland looks like it would come so easily to the crescent wrench, right?
And in all probability that's where the corrosion is. When they become hard to turn, internal corrosion has the upper hand and it will not get better with time or brutality.
Just like the Pneumatic start valve, somebody at the factory is assembling these using tremendous torques, since this valve sees full system pressure.
We receive these as pictured, overhauled and tested by the factory. However in some cases the Tees and Valve Handle may not be present on your valve.
Electro Pneumatic Start Valve - OVERHAULED
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On Yak 52 this valve is located ahead of the pilots left foot and is mounted against the rear of the firewall, above the voltage regulator.
If you are having trouble with yours, it's no secret these were a 'marginal' design - by which is meant you'll need a solid 28v in the battery and at least 40 bar of Air Pressure to make a successful start, because the spring is only overcome by a combination of Electrical and Pneumatic force, simultaneously applied.
(The unit pictured is a used example and does not depict the true appearance of a Factory overhauled unit in its original packaging.)
A version of this valve exists without the manual lever shown in the second photo. Being mounted on the firewall, this WAS something you could operate with your foot in a 52, but could not reach in a 50, hence Yak 50 start valves ( while interchangeable) don't have the lever.
All Electrical Items are sold without warranty and cannot be returned. All sales are final. Thanks for your understanding.
Pressure Reducing Valve Tee with Check valves
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A great place to start looking if you are making but not holding air. These springs can break but more likely the hard rubber facing on the brass piston ( shown at the base of the photo) has taken a set from the steel sealing ring inside the valve body, and should be refaced.
Yak 50 uses the same PRV but with a different orientation and distribution of Check Valves.
Braking Differential Valve PU-8 (Y135)
In the Yak 52 this valve is connected to the rear rudder pedals and their position ( biased either left or right) diverts more compressed air to the wheel brake on that particular side. Air pressure is first stepped down to 80 psi by the U-139A2 reduction valve, also available on this site.
AK-50 air compressor removal tool set
Waterjet cut, welded, normalized, heat treated and plated, these two wrenches are faithul to the original Russian dimensions and materials.
Only those who have wasted a day on this task using the wrong tools will appreciate the right ones.
Five nuts and washers yield to the long curved tool with ease, but unless you have this short wrench, you'll be spending a lot longer than necessary on the sixth.
(If it's your first time tackling the job, we recommend removing the section of the exhaust that includes the heater muff, followed by the sheet metal blast duct which guides cold air onto the head of the compressor. Might seem like wasted effort until you have freed the compressor and need to maneuver it for removal or to get at that sheared coupling. )
And, if you've already attempted the job without the correct tools, you'll know that taking these six nuts off, was only half the fun.