TM9-2330-376-14&P
4 - 3 4 . SERVICE BRAKE HYDRAULIC TUBES, HOSES, AND FITTINGS REPLACEMENT.
This Task Covers:
b.
Installation
Removal
a.
Initial Setup:
Materials/Parts
Equipment Conditions:
Air reservoir pressure drained (para 3-9).
Rags (Item 12, Appendix E)
Six Iockwashers
Tools/Test Equipment:
General mechanic's tool kit
Drain pan
NOTE
Service brake hydraulic tubes, hoses, and fittings are replaced in a similar manner for
all trailers. XM979 or XM1061 is shown here.
Use a suitable container to catch any draining brake fluid. Clean up all spills.
REMOVAL
a.
Disconnect tube assembly (1) from multiple connector (2) on backing plate and multiple connector (6) on front
1.
axle. Remove tube assembly from front axle.
2.
On all except M1061A1, disconnect hose assembly (3) from multiple connector (6) on front axle and fitting on
shuttle valve (4). Remove hose assembly from front axle.
On all except M1061A1, disconnect hose assembly (5) from fitting on shuttle valve (4) and reducer on master
3.
cylinder (8). Remove hose assembly.
On M1061A, disconnect hose assembly (7) from multiple connector (6) on front axle and reducer on master
4.
cylinder (8). Remove hose assembly.
Remove tube assembly (13) from multiple connector (12) on backing plate and multiple connector (6) on front
5.
axle.
Remove two screws (16), Iockwashers (15), and clamps (14). Remove tube assembly (13) from front axle.
6.
Discard Iockwashers.
Remove nut (11), Iockwasher (10), screw (9), if present, and multiple connector (6). Discard Iockwasher.
7.
Repeat steps 1 through 7 for hoses, tubes, and fittings on rear axle.
8.
INSTALLATION
b.
Install multiple connector (6) on front axle with screw (9), if present, new Iockwasher (10), and nut(11).
1.
Position tube assembly (13) on front axle and install two clamps(14) with two screws(16) and new Iockwashers
2.
(15).
Connect tube assembly (13) to multiple connector(12) on backing plate and multiple connector(6) on front axle.
3.
4.
On M1061A1, connect hose assembly (7) to reducer on master cylinder (8) and multiple connector(6) on front
axle.
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