TM 5-5420-228-24
MASTER RELIEF VALVE (RV1) CARTRIDGE REPLACEMENT (Sheet 1 of 1)
1-1/8 in. open end wrench
TOOLS:
Rags (Item 12, Appendix D)
SUPPLIES:
Goggles (Item 26, Appendix D)
Preformed packing
Gloves (Item 27, Appendix D)
LO 5-5420-202-12
REFERENCE:
Drain hydraulic reservoir (page 3-74)
PRELIMINARY PROCEDURE:
REMOVAL:
wARNING
FRH fluid may contain Tricresyl
P h o s p h a t e which may be absorbed
and produces
skin
the
through
internally.
taken
paralysis if
measures
protective
Appropriate
should be taken to avoid such
exposures.
NOTE
Use rags to catch excess hydraulic fluid.
Using wrench, remove cartridge (A)
1.
from master relief valve (B).
Remove preformed packing (C) from
2.
cartridge (A). Throw preformed
packing away.
INSTALLATION:
Install new preformed packing (C) on cartridge (A).
1.
Using wrench, install cartridge (A) into master relief valve (B).
2.
3. Refill hydraulic reservoir (LO 5-5420-202-12).
Bleed hydraulic system (page 3-72).
4.
5.
Check for hydraulic leaks and correct as necessary.
6. Refill hydraulic reservoir (LO 5-5420-202-12).
Adjust master relief valve (RV1) pressure (page 3-76).
7.
TA251471
End of Task
