TM 5-5420-227-24
SEQUENCE VALVE (RV2) ADJUSTMENT (Sheet 1 of 1)
3/16 in. socket head screw key
TOOLS:
5/16 in. socket head screw key
9/16in. open end wrench
SPECIAL TOOL: Gage, pressure (item 3, sec III, app B)
Two
PERSONNEL:
REFERENCE:
Relieve hydraulic pressure (page 3-65)
PRELIMINARY PROCEDURE:
QUADRANTS REMOVED FOR CLARITY
NOTE
If STE/lCE is available, go to STE/lCE Test 51
(page 247).
ADJUSTMENT:
1.
Using 5/16 inch screw key, remove plug (A).
2.
Manually install pressure gage in opening
left by plug (A).
Engage hydraulic pump (TM 5-5420-226-10).
3.
4.
Set engine speed at 1800 rpm.
Pull up on locking cylinder control
5.
and ejection cylinder levers.
Have second technician observe pressure gage
6.
reading.
Return locking and ejection cylinder control levers to neutral position.
7.
Remove adjusting screw cap (B) using wrench.
8.
To adjust pressure, hold adjusting screw (C) with 3/16 inch screw key and use wrench
9.
to loosen jamnut (D). Using 3/16 inch screw key, turn adjusting screw (C) clockwise
to increase pressure or counterclockwise to decrease pressure.
Repeat steps 3 through 9 until pressure gage shows reading of 3200 50 psi (22064 +
10.
--
340 kPa).
11.
Holding adjusting screw (B) with 3/16 inch screw key, use wrench to tighten jamnut
(D).
Install adjusting screw cap (B) using wrench.
12.
Remove pressure gage.
13.
Using 5/16 inch screw key, install plug (A).
14.
TA170299
End of Task
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