B-29 Superfortress Service School Manual AR-234 the pilot pulls out the

the pilot pulls out the pump knob to its limit and releases it

but we have no way to authenticate the document

The Suction Gage measured the amount of vacuum generated to power the pneumatically-operated gyroscopic instruments

point the sight up (90 deg) or down (-5 deg)

B-29 Superfortress Service School Manual AR-234 the pilot pulls out theThis is an authentic WWII era compilation of original student training instructions for servicing the US Army Air Force Boeing B 29 Superfortress heavy bomber from the Academic Department of the Amarillo Army Air Field . This 1. 5 inch thick manual contains a collection of training instructions from 1944 and 1945 for select systems of the B 29, including air frames, ventilation, engines, hydraulics, electrical, etc. This was a personal compilation of