TM 5-4310-452-14
5-39. UNLOADER VALVE ASSEMBLY REPAIR.
This Task Covers:
a. Disassembly
b. Assembly
Initial Setup:
Equipment Conditions:
Materials/Parts:
• Unloader valve assembly removed (see para-
• One gasket
graph 4-90).
• Two preformed packings
Tools/Test Equipment:
• General mechanic's tool kit
a. DISASSEMBLY
1.
Remove 4 screws (8) and access cover (9) from housing (12).
NOTE
Washer may remain in housing or stay on piston.
2.
Remove washer (2) and main unloader valve spring (3) from piston (5).
3.
Remove screw (10), washer (7), packing retainer (6), and spring (11) from piston (5).
4.
Pull bushing (1) and sleeve (4) from piston (5).
5.
Remove 6 screws (13).
6.
Remove housing (12), gasket (14), and valve (15) from valve body (16). Discard gasket.
7.
Remove plug (22), spring (20), and pin (19) from valve body (16).
8.
Remove preformed packing (21) from plug (22). Discard preformed packing.
9.
Remove plug (18) and remove preformed packing (17) from plug. Discard preformed packing.
5-95
