TM 5-3805-255-14
0121
ASSEMBLY CONTINUED
2. Assemble cylinder relief valve as follows.
a. Install new O-ring (Figure 18, Item 19) and new backup ring (Figure 18, Item 18) on poppet (Figure 18,
Item 17).
b. Lubricate O-rings with clean oil (WP 0018). Install poppet (Figure 18, Item 17) in check valve poppet (Fig-
ure 18, Item 16).
c.
Install piston (Figure 18, Item 2) in center bore of poppet (Figure 18, Item 17).
d. Install spring (Figure 18, Item 3) over piston (Figure 18, Item 2) and place poppet assembly aside.
e. Place pilot poppet (Figure 18, Item 9) in center bore of plug (Figure 18, Item 8).
f.
Install spring (Figure 18, Item 10) in plug center bore and over stem of pilot poppet (Figure 18, Item 9).
g. Thread adjusting screw (Figure 18, Item 11) into plug center bore until it begins to compress spring (Figure
18, Item 10).
h. Install a new backup ring (Figure 18, Item 6) in groove in center of plug (Figure 18, Item 8).
i.
Install a new O-ring (Figure 18, Item 7) below backup ring.
j.
Install a new O-ring (Figure 18, Item 7) in groove below flange of plug (Figure 18, Item 8).
k.
Lubricate new O-ring (Figure 18, Item 7) and new backup ring (Figure 18, Item 6) with clean oil (WP 0018).
l.
Install new O-ring (Figure 18, Item 5) on plug (Figure 18, Item 8).
NOTE
Be sure springs do not kink or bind and are seated correctly.
m. Place large spring (Figure 18, Item 4) over small diameter of plug (Figure 18, Item 8).
n. Carefully slide poppet assembly (Figure 18, Items 16, 17, 18, and 19) over plug (Figure 18, Item 8).
o. Place housing (Figure 18, Item 15) over poppet assembly and thread plug (Figure 18, Item 6) into housing
(Figure 18, Item 1). Hold housing and tighten plug (Figure 18, Item 8) securely.
p. Install new O-ring (Figure 18, Item 7) in groove above threads on housing (Figure 18, Item 1).
q. Lubricate O-ring with clean oil (WP 0018) and thread valve in main control valve body (Figure 18, Item 1).
Tighten valve assembly securely.
3. Install new copper washer (Figure 18, Item 12) on adjusting screw (Figure 18, Item 11). Thread jamnut (Figure
18, Item 13) on adjusting screw. Valve is now ready for adjustment (WP 0078).
4. After adjustment, install new copper washer (Figure 18, Item 12) and acorn nut (Figure 18, Item 14). Tighten
acorn nut securely.
0121-16
