TM 55-2210-224-34
Table 3-1. INTERMEDIATE DIRECT SUPPORT AND INTERMEDIATE GENERAL SUPPORT
TROUBLESHOOTING (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. AUTOMATIC BRAKE DOES NOT APPLY FOLLOWING A BRAKE PIPE REDUCTION.
Step 1. Check for uncharged brake pipe.
Charge brake pipe.
Step 2. Check for closed brake pipe cutout cock.
Open brake pipe cutout cock.
Step 3. Check for partially closed main reservoir cutout cock.
Open main reservoir cutout cock.
Step 4. Check for defective No
. 24 double check valve in pipe 12.
Replace No. 24 double check valve (para 3-54).
Step 5. Check for closed brake cylinder cutout cocks.
Open brake cylinder cutout cocks.
Step 6. Check for defective brake cylinders.
Disassemble, clean, and repair or replace brake cylinders (para 3-58).
Step 7. Check for defective 6-NFR distributing valve
. (Refer to malfunctions 25 thru 28.)
Disassemble, clean, and repair or replace 6-NFR distributing valve (para 4-13).
10. UNDESIRED RELEASE OF AN AUTOMATIC BRAKE APPLICATION BY AN INCREASE IN EITHER
EQUALIZING RESERVOIR OR
BRAKE PIPE PRESSURE.
Check for defective automatic brake valve
. (Refer to malfunctions 21 and 22.)
Disassemble, clean, and repair or replace automatic brake valve (para 4-11).
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