Honeywell HON 512, User And Maintenance Manual

Page: 126 / 208

Maintenance
HON 512 with HON 650 pilot user manual 126
Figure Step Description
3 Unscrew the fitting (1) on the upper cover.
Replace the sealing ring (2) with a new,
greased sealing ring.
Lubricate the thread surfaces.
Screw the fitting (1) back in.
4 Remove the spring from the cap.
5 Loosen the screws and slowly and carefully
remove the lower cover.
Important! While
removing the cover, parts on the inside
may fall out from the spring housing by
accident!
6 Remove the lower spring plate (1), the
axial washers (2), and the axial needle
roller bearing (3) from the spring housing.
7 Remove the compression spring (1) and
the upper spring plate (2) from the spring
housing.