TM 5-3805-280-24-1
Sub-System Diagnostics
1b QUICK HITCH
Position boom so implement is resting on ground.
YES: Control box is OK.
CONTROL BOX (A6)
Go to next check.
CHECK
Turn key Switch OFF
NO: Repair or replace
control box.
Remove harness connector from hitch solenoid.
connect voltmeter to pins 1 and 2 of harness connector.
Turn key switch ON.
T112437 UN05DEC97
CAUTION: Do not move control box switch to
UNLATCH position unless implement or
quick hitch is resting on ground.
Move control box switch to UNLATCH position.
Does voltmeter read 24 volts?
9015
Does hitch indicator light come on?
15
43
Does hitch warning alarm sound?
Move control box switch to LATCH position
1/1
1c HITCH SOLENOID
Disconnect harness from hitch solenoid.
YES: Solenoid is OK.
(Y2) CHECK
Connect 24 volts to solenoid terminal No. 1 and ground
NO: Solenoid has failed.
terminal No. 2.
Replace.
Does solenoid click?
Reconnect harness.
T111034 UN21AUG97
1/1
HEATER CIRCUIT (MACHINES WITHOUT AIR
CONDITIONER)
See Group 9031.
CED,OUOE012,43 1910NOV981/1
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