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I plan on adding the tips and hints on this page provided to me or ones I have come across. I will also provide some downloads I have prepared for various systems on the Yak-52.
Air System Schematic - the complete schematic of the pneumatic system along with descriptions.
Fuel System Schematic - the complete schematic of the fuel system along with descriptions.
Oil System Schematic - the complete schematic of the oil system along with descriptions.
The lines connecting the various components in the above systems are color coded: black for air lines, yellow for fuel lines and brown for oil lines.
M14P Oil Screens - 4 oil screens that need to be cleaned at oil change.
Main gear "hidden" grease nipples you'll want to find! Thanks for your help Jill Gernetzke-Hays.
Upper carb drain plug issue you'll want to inspect! Thanks Sam Sax & Mark Schrick for the heads-up!
Oil Temp Reservoir Issue you'll want to inspect! Thanks again Mark Schrick for the info & picts
Prop Description & Tips along with common maintenance practices.
Preflight Duties Sample preflight document.
Russian Lubricant Conversions Conversions to US equivalents.
Mag Drop Issues Common causes for mag drops.
Tire Sources Tires can be re-capped or purchased new.
Tach Issues Common cause (and solution) for tach isssues.
Air Tank Testing Info including where you can send the tanks for testing.
Shimmy Damper Servicing Info and process for servicing the shimmy damper.
Wing Spar Modification History
The 52 was designed as an +7/-5 g aircraft. In 1982, new limits were established limiting it to +5/-3 g until a factory upgrade was fitted, increasing the strength of the spar carry through (service bulletins 59 & 60). In 1986 (s/n 866501 and above) this modification was incorporated from the factory and the overhaul facilities began to incorporate the modifications during the late '80s. Since all 52s in service were required to be overhauled every five years, all servicable aircraft should have been upgraded by now. Of course, there were a few aircraft that did not receive the upgrade. It is easy to identify these aircraft since the modification yields a "pie slice" shaped bump on the underside wingroot fairings by the main spar. There is nothing wrong with non-modified, pre-86 52s, just respect the limitations. Later, the factory issued another modification (spar straps) to extend the service hours of the airframe (service bulletin 107).
Move your mouse cursor over the buttons to the right of the picture to "apply" the modifications.
| Yakovlev Model 52 External Spar Modification Identification | |||||||
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Many tips are listed on other wepages...
UK Mandatory Permit Directives and SBs from Yak UK.
Yak-52 World maintenance tips.
M14P Schematics from SnapRoll Aerobatics.
M14P Introduction by Fred Abramson.
Radial Engines and Hydraulic Lock from AvWeb.
To access the start page of most of the links above, see my links page.
