Pilot Minimum Lift Adjustment And Pressure Setting Preparation - Emerson ANDERSON GREENWOOD 727 Installation And Maintenance Instructions Manual

ANDERSON GREENWOOD TYPE 727 DUAL PILOT MANIFOLD
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FIGURE 7
517
GUIDE NOZZLE SUBASSEMBLY
6 PILOT MINIMUM LIFT ADJUSTMENT AND
PRESSURE SETTING PREPARATION
1. Install dial gauge in top of indicator housing.
2. The pilot assembly is now ready for setting
of the minimum pilot lift as described
in Figure 8. This procedure will require
Anderson Greenwood pilot setting fixture
assembly Part no. 06.3036.002 and test
tank installation (see Figures 8 and 9).
3. After installing shims to set minimum
pilot lift to the specified range, clamp the
blowdown bushing hex in a soft jawed vise
and, using the " wrench flats provided
15 /
16
on the pilot body, tighten the blowdown
bushing.
4. Using the pilot test fixture, verify the
minimum lift setting and adjust the
blowdown adjustment screw in until pilot
lift is approximately .050". This will put the
blowdown near the normal range for final
adjustment.
516
527
518
519
523
520
524
515
504
5. Install blowdown locking seal (526) around
shoulder ring on bottom of blowdown
bushing (523). Install blowdown lock
nut (525) hand tight (see Figures 6 and 7).
6. Remove the special housing and dial
indicator.
7. Insert top spring washer w/hole (508),
spring (507) and bottom spring washer (506)
into bonnet. Place bonnet spring washer
(505) over guide (517) and screw bonnet
assembly into pilot body. Install adjustment
screw (511) with locknut (510) (see Figures 6
and 7).
Note: apply a very light coat of Fluorolube
to adjustment screw and bonnet mounting
threads before assembly.
8. Turn pilot assembly upside down, clamp
bonnet hex in soft jaw vise and, using
the " wrench flats provided on pilot
/
15
16
body, tighten body to bonnet securely to
completely seat the nozzle gasket.
9. The pilot is now ready to be adjusted for
set pressure and reseat pressure.
BLOWDOWN ADJUSTMENT
SUBASSEMBLY
521
526
525
522
19