SEQUENCE VALVE REPAIR - CONTINUED
TESTING - CONTINUED
Operate engine and run at high idle (TM 5-3805-248-10).
Move apron control lever to raise position and hold. Observe pressure gage. When pressure reaches 1,00050 psi, the
sequence valve must open. If it does not open, proceed to next step.
Shut down engine.
Disassemble valve. Refer to Disassembly, steps 3 through 6, in this work package.
Decrease shim thickness to lower pressure. Increase shim thickness to raise pressure.
Add or remove two shims (12), as necessary. Refer to Table 1 to determine correct amount of shim(s) to add or remove.
Pressure Change to Sequence Valve
Change in Pressure
0.005 in. (0.127 mm)
20 psi (138 kPa)
0.031 in. (0.787 mm)
120 psi (827 kPa)
Assemble valve. Refer to Assembly, steps 1 through 4, in this work package.
Operate engine. Check gage. If reading is correct,
Install plug (5). If valve does not open at 100050 psi,
repeat test until valve opens at correct pressure.
END OF WORK PACKAGE
0382 00-5/-6 Blank