Honeywell HON 512, User And Maintenance Manual

Page: 137 / 208

Maintenance
HON 512 with HON 650 pilot user manual 137
8.4.6 Maintaining the fine mesh filter
Observe the following cleaning instructions:
▪
Before assembly, all parts must be cleaned in order to remove any foreign particles
(swarf) and soiling.
▪
If fasteners (screws, washers, etc.) are replaced with identical new parts, any oil on
these new parts must first be removed.
Observe the tightening torques below when following the instructions in this section:
Part Tightening torque Step
Base plate hex nut 10 Nm (8 ft lbs) 7
Fitting 40 Nm (30 ft lbs) 9
Proceed as follows:
Figure Step Description
1 Unscrew the nuts (1) and washers (2).
Remove the base plate (3) from the body.
2 Remove the filter insert (1) and clean it.
3 Check the filter cartridge for damage and
replace it with a new one if necessary.
4 Replace the O-ring (1) in the body with a
new, greased O-ring.
Cleaning
Tightening torques
Maintaining the filter