TM 5-5420-228-24
TONGUE CYLINDER HYDRAULICS, RELIEF VALVE (RV4),
AND CHECK VALVE (CV4) REPLACEMENT (Sheet 1 of 4)
PROCEDURE INDEX
PAGE
PROCEDURE
Removal
Installation
12 in. adjustable wrench
TOOLS: l-1/8 in. open end wrench
15 in. adjustable wrench
1-3/8 in. open end wrench
Vise
l-1/4 in. open end wrench
SUPPLIES:
Drip pans [suitable containers)
Pencil (Item 22, Appendix D)
Rags (Item 12, Appendix D)
Pipe tape (Item 19, Appendix D)
Masking tape (Item 18, Appendix D) Protective caps and plugs
REFERENCE:
LO 5-5420-202-12
Remove tongue cylinder armor (page 3-232)
PRELIMINARY PROCEDURES:
Relieve hydraulic pressure (page 3-71)
Remove tongue cylinder flow regulator (page 3-114)
REMOVAL:
1.
Holding nipple (A) with 1-1/8 inch wrench, use 1-1/4 inch wrench to disconnect hose
assembly "CH" (B) from nipple (A).
2.
Holding elbow (C) with 15 inch adjustable wrench, use 1-1/4 inch wrench to remove hose
assembly "CK1" (D) from elbow (C).
3.
Using 1-1/8 inch wrench, remove nipple (E) and attached parts as an assembly from relief
valve "RV4" (G).
4.
Holding check valve "CV4" (F) with 1-3/8 inch wrench, use 15 inch adjustable wrench to
remove relief valve "RV4" (G) from check valve "CV4" (F).
5.
Using 1-1/8 inch wrench, remove nipple (H) and its attached parts as an assembly from
tongue cylinder (J).
TA251497
Go on to Sheet 2