TB 9-2320-335-13&P
7-10. PROPORTIONING VALVE AND DIFFERENTIAL VALVE REPLACEMENT
This task covers:
a. Differential Valve Removal
c. Proportioning Valve Removal
b. Differential Valve Installation
d. Proportioning Valve Installation
INITIAL SETUP:)
Tools
Manual References
General mechanic's tool kit:
TM 9-2320-387-10
automotive (Appendix B, Item 1)
TM 9-2320-387-24-1
Maintenance and repair shop equipment:
TM 9-2320-387-24P
automotive (Appendix B, Item 2)
Equipment Condition
Materials/Parts
Battery ground cables disconnected
Locknut (Appendix A, Item 78)
(TM 9-2320-387-24-1).
Locknut (Appendix A, Item 106)
Hood raised and secured (TM 9-2320-387-10).
Lubricating oil (Appendix C, Item 46)
Maintenance Level
Unit
CAUTION
Cover or plug all open lines and connections immediately after
disconnection to prevent contamination. Remove all covers or
plugs prior to connection.
Do not attempt to disassemble proportioning valve. Damage to
equipment will result.
NOTE
Have drainage container ready to catch brake fluid.
a. Differential Valve Removal
1.
Disconnect electrical connector (2) from differential valve (4).
2.
Disconnect two brake lines (3) from differential valve (4).
3.
Disconnect two brake lines (5) from differential valve (4).
4.
Remove locknut (6), washer (7), and differential valve (4) with differential valve bracket (8) from
hydro-boost (1). Discard locknut (6).
b. Differential Valve Installation
1.
Install differential valve (4) and differential valve bracket (8) on hydro-boost (1) with washer (7) and
locknut (6). Tighten locknut (6) to 22 lb-ft (30 Nm).
2.
Connect two brake lines (5) to bottom of differential valve (4).
3.
Connect two brake lines (3) to top of differential valve (4).
4.
Apply lubricating oil to pins (9) of differential valve (4).
5.
Connect electrical connector (2) to differential valve (4).
c. Proportioning Valve Removal
1.
Disconnect two brake lines (17) from proportioning valve (16).
2.
Disconnect two brake lines (15) from proportioning valve (16).
3.
Remove locknut (14), washer (13), screw (11), and proportioning valve (16) with proportioning valve
bracket (12) from bracket (10). Discard locknut (14).
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