TM-5-3805-254-20-1

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL VOLUME 1 OF 2

JANUARY 1988

TM-5-3805-254-20-1 - Page 417 of 790

TM 5-3805-254-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 4. Check valve vent (6) on bottom of treadle valve (4) for foreign matter as follows: drain air system

(page 2-1034).

Using 1/4-inch flat-tip screwdriver, pull back diaphragm (7) and check for

foreign matter or other restrictions.

a.If foreign matter or other restriction is found in valve vent (6), using 3/8-inch box-end

wrench, unscrew and take off nut (8), and diaphragm (7).

Using 1/4-inch flat-tip

screwdriver, unclog any foreign matter and clean.

Put diaphragm (7) in place,

screw on and tighten nut (8) using 3/8-inch box-end wrench.

If air pressure is still

not exhausted, replace treadle valve (4) (page 2-1052).

b.If foreign matter is not found, replace treadle valve (4) (page 2-1052).

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