1. Tube
11.
Capscrew (5)
21.
Identification plate
2. Pilot valve
12.
Washer, steel(6)
22.
Crank pin cap, complete
3. Elbow
13.
Capscrew
23.
Plunger
4. Spring
14.
Cover, frame end
24.
Spring
5. Plate
15.
Cover-
25.
Lockwire
6. Body,
16.
Gasket
26.
Pin (2)
7. Locknut
17.
Plug, oil filler
27.
Weight (2)
8. Seat
18.
Plug
28.
Screw, hex, socket(2)
9. Thrust pin
19.
Packing
29.
Cap, crank pin
10. Packing
20.
Stud, drive (4)
Figure 4-3. Pilot valve, removal and installation
(2) Remove elbow (3), spring (4), plate (5), and
(5) Replace a deteriorated preformed packing
body (6).
c Installation
(3) Remove locknut (7), seat (8), and the thrust
(1) Position Preformed packing (10) on thrust
pin (9).
pin, then place thrust pin (9) through seat (8).
(4) Remove the preformed packing (10) from
(2) Screw the locknut on body (6), place seat
the thrust pin (9).
(8) in body, then position pin, seat, and body in the frame
b Cleaning and Inspection.
end plate.
(1) Clean all parts and Ripe dry with a lint free
(3) Position plate (5) against thrust pin (9).
cloth.
(4) Adjust the pilot valve (pare 3-9).
(2) Check the spring (4) for disfiguration, or
4-12. Inlet Filter Replacement
loss of tension. Replace a defective spring.
(3) Check that the plate (5) is not worn, or bent
out of shape. Replace a defective plate.
3-4) from nipple (6).
(4) Check body (6) and seat (8) for burred
b Disassembly, Cleaning, Repair, and Reassembly
threads. Check the thrust pin (9) for excessive wear, or
(1) Disassemble, clean, repair, and reassemble
bend that will keep plate unseated.
the
4-5
