PARKING BRAKE HORN ON LOADER BACKHOES WITH SERIAL NUMBERS 319995 THRU 342573 DOES NOT WORK

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

24. PARKING BRAKE WARNING LIGHT ON LOADER BACKHOES WITH SERIAL NUMBER 319995 THRU 342573

DOES NOT WORK - CONTINUED

WARNING

Although ignition lock switch must be on and battery ground cable connected to test electrical circuit

voltage, turn off ignition lock switch and disconnect battery ground cable before doing resistance tests or

replacing parts. This will keep you from getting shocked and prevent damage to parts and equipment.

a. If multimeter reads 0 ohm, go to step 3.

b. If multimeter reads more than 0 ohm, replace bulb and install indicator light (page 2-550).

Step 3. Check indicator light lead (1) for cracks, breaks, and corrosion.

a. If lead (1) is cracked or broken, replace and install indicator light (page 2-550).

b. If lead (1) is corroded, clean with fine abrasive paper (item 20, Appendix C) and install indicator

light (page 2-500).

c. If lead is not cracked, broken, or corroded, replace parking brake warning light ground wire

(Serial Numbers 319995 thru 342573 only) (page 2-500).

25. PARKING BRAKE HORN ON LOADER BACKHOES WITH SERIAL NUMBERS 319995 THRU 342573 DOES NOT

WORK

WARNING

Although ignition lock switch must be on and battery ground cable connected to test electrical circuit

voltage, turn off ignition lock switch and disconnect battery ground cable before doing resistance tests or

replacing parts. This will keep you from getting shocked and prevent damage to parts and equipment.

Step 1. Operate electric horn (TM 5-2420-222-10).

a. If horn (2) sounds, go to step 2.

b. If horn (2) does not sound, replace (page 2-668).

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