TM 5-2420-224-20-2
F L U I D R E G U L A T I N G V A L V E R E P L A C E M E N T
This task covers:
a. Removal b. Installation
Tools and Special Equipment:
Shop Equipment, SC 4910-95-CL-A74
Tool Kit, SC 5180-90-CL-N26
Equipment Condition:
Reference
Condition Description
Page 4-300
Antifreeze Device
Removed
Page 2-23
Air Pressure Relieved
General Safety Instructions:
W A R N I N G
D o n o t d i s c o n n e c t a n y a i r
system lines or fittings unless
vehicle engine is shut off and
air system pressure is relieved.
To do so could result in injury
to personnel.
R E M O V A L
1.
LOOSEN COUPLING (1).
2.
REMOVE fluid regulating VALVE (2) by
rotating to left.
I N S T A L L A T I O N
1.
INSTALL fluid regulating VALVE (2) by
rotating to right.
2.
TIGHTEN COUPLING (1).
3.
INSTALL ANTIFREEZE DEVICE (page 4-300).
NOTE
It may be necessary to adjust new
regulating valve after installation.
4.
5.
Start and run engine at idle until regulating
valve reaches cut-out pressure (an audible
“pop”)
Read pressure on dual brake gage. Reading
must be approximately 106 psi. If reading is
not approximately 106 psi, turn fluid regulating
valve adjusting screw (3) 1/4-turn to right to
increase pressure,
or 1/4-turn to left to
decrease pressure. Relieve air pressure (page
2-23) from air tanks to approximately 80 psi
and repeat steps 4 and 5 until cut-out
pressure is approximately 106 psi.
4-306
I N I T I A L S E T UP
