Apollo 1500/1550/1551 816 Linear Actuator Part Diagrams April 09, 2020 22:59 Updated PartDiagrams_1500Series_816.pdf 900 KB Download Related articles Apollo 1500 LA System (816 arm & 636 Control Board) Installation Reference Manual Apollo 816 Linear Actuator Installation Reference Manual Linear Actuator Family Brochure How do I replace a proximity switch on a 816 actuator? How do I replace a motor for the 816 actuator?