TM 9-2320-260-34-2
16-37. REUEF VALVE MAINTENANCE (M819)
THIS TASK COVERS:
d. Assembly
a. Removal
b. Disassembly
e. Installation
c. Cleaning and Inspection
INITIAL SETUP
MATERIALS/PARTS (Contd)
APPLICABLE MODELS
M819
Gasket (Appendix D, Item 61)
Packing (Appendix D, Item 313)
Tools
Lubricating oil (Appendix C, Item 20)
General mechanic's tool kit
Antiseize tape (Appendix C, Item 50)
Cap and plug set (Appendix C, Item 6)
(Appendix B, Item 1)
Two 1-1/2-in. open-end wrench
REFERENCES (TM)
LO 9-2320-260-12
14-in. pipe wrench (Appendix B, Item 129)
TM 9-2320-260-10
Vise (Appendix B, Item 38)
Arbor press (Appendix B, Item 7)
TM 9-2320-260-34P-2
EQUIPMENT CONDITION
MATERIALS/PARTS
Z Parking brake set (TM 9-2320-260-10).
Two O-rings (Appendix D, Item 272)
O-ring (Appendix D, Item 273)
q Hydraulic oil tank drained (LO 9-2320-260-12).
I
I
a Removal
4
CAUTION
Clean area around hoses and lines before removal to prevent
q
entry of dirt. Damage will occur if dirt or dust enters system.
Z Cap or plug all openings immediately after disconnecting lines
and hoses to prevent contamination. Remove caps and plugs
before installation. Failure to do so may result in damage to
hydraulic system.
NOTE
Tag hoses for installation.
Disconnect hose (1) from elbow (3) on hydraulic oil reservoir (2).
1.
Loosen nut (9) on adapter (10) and disconnect hose (8).
2.
Loosen nut (6) on adapter elbow (7) and disconnect hose (5).
3.
Remove hose (1) from tee fitting (15).
4.
Remove adapter elbow (7) from tee fitting (15) and tee fitting (15) from bushing (14).
5.
Remove relief valve (13) from pipe nipple (4).
6.
Place relief valve (13) in vise and remove adapter (10) from bushing (11).
7.
Remove bushings (11), (12), and (14) from relief valve (13).
8.
b. Disassembly
1. Remove capnut (16) and packing (17) from adjusting screw (18). Discard packing (17).
NOTE
Record position of adjusting screw for installation.
2. Loosen jamnut (19) and remove adjusting screw (18), jamnut (19), and O-ring (20) from
retainer (21). Take jamnut (19) off adjusting screw (18). Discard O-ring (20).
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