PN 1-4-1-390, Yak 52 Air Hose, Nose Gear Extension
This hose supplies air to the Diverter Valve on the Nose Gear Actuator to blow down the Yak 52's nose wheel. It is hose number 87 on the factory schematic.
Non Emergency hoses always attach to the smaller diameter side of the Diverter Valve PN 524704-30
New Russian hose material meeting the factory specifications has been used, plus good-condition used Russian hose fittings.
This part should be installed on a Yak 52 with standard nose gear. No fitness for use should be assumed if this hose is installed on any other Nose gear/airframe combination.
Once you've fitted this new hose, don't throw your old one away ! If the Original Russian hose fittings on your old hose are in good shape, please cut the ends off and ship them to us.
For each well cared-for RUSSIAN metric hose-end fitting, once received, inspected and deemed acceptable by us we'll send you an electronic refund (not to exceed $15 US per hose end) .
The blog has more details on our unambiguous accept / reject criteria.