MAIN CONTROL VALVE ASSEMBLY REPAIR - continued

TM 10-3930-673-34

(c)

Remove plug (8), preformed packing (9), back-up ring (10), and preformed packing (11).

Discard preformed packings.

(d)

Remove spring (12), piston (13), preformed packing (14), back-up ring (15), and poppets (16

and 17). Discard preformed packing.

(e)

Remove body (18) and preformed packing (19). Discard preformed packing.

NOTE

Do not remove relief valves unless they are being replaced.

(2)

Remove two relief valves (20) and

disassemble parts (21 through 38)

from main control valve.

(a)

Remove nuts (21 and 22) and

preformed packings (23) from

adjusting screw (24).

NOTE

Count and record number of turns

required to remove adjusting screw

to aid in assembly.

TR00991

(b)

Remove adjusting screw (24),

spring (25), and poppet (26) from

plug (27).

(c)

Remove plug (27), preformed packing (28), back-up ring (29), and preformed packing (30).

Discard preformed packings.

(d)

Remove spring (31), piston (32), preformed packing (33), back-up ring (34) and poppets (35

and 36). Discard preformed packing.

(e)

Remove body (37) and preformed packing (38). Discard preformed packing.

16-17