This authentic military surplus specialty shop tool known as a Cam and Oil Pump Assembly Jig was manufactured by/for Wright Aeronautical. This heavy-duty steel fixture is a necessary piece of depot-level maintenance equipment used to precisely position, align, and retain internal drive tolerances when overhauling core oiling and valve timing components. It had application with engines such as the Wright-1820 Cyclone 9 and Wright R-2600 Cyclone 14. These engines were used to power classic warbird aircraft such as the:

- CH-34

- B-17 Flying Foretress

- B-25 Mitchell

- Douglas C-47

- Grumman S-2

- SB2C Helldiver

- T-28 Trojan