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TM 9-2320-360-20-1
WARNING
Jewelry can catch on equipment and cause injury or short
across electrical circuit and cause severe burns or electrical
shock. Remove rings, bracelets, watches, necklaces, and
any other jewelry before working around HET Tractor.
WIRE NO. 1715 VOLTAGE TEST
(1)
Remove wire no 508/988 from ENGINE BRAKE relay.
(2)
Install jumper wire from terminal 85 on ENGINE BRAKE
relay to known good ground.
(3)
Turn ENGINE switch to ON position.
(4)
Place ENGINE BRAKE RETARDER ON/OFF switch in
the ON position.
(5)
Place ENGINE BRAKE RETARDER HI/LOW switch in
the HI position.
(6)
Place positive (+) probe of multimeter on wire no 1715
at ENGINE BRAKE RETARDER HI/LOW switch.
(7)
Place negative (-) probe of multimeter on ground and
look for 10-14 volts on multimeter.
(8)
Place ENGINE BRAKE RETARDER ON/OFF switch in
the OFF position.
(9)
Turn ENGINE switch to OFF position.
(10)Remove jumper wire from ENGINE BRAKE relay.
(11)lnstall wire no 508/988 on ENGINE BRAKE relay.
WIRE NO. 1714 VOLTAGE TEST
(1)
Remove wire no 508/988 from ENGINE BRAKE relay.
(2)
Install jumper wire from terminal 85 on ENGINE BRAKE
relay to known good ground.
(3)
Turn ENGINE switch to ON position.
(4)
Place ENGINE BRAKE RETARDER ON/OFF switch in
the ON position.
(5)
Place ENGINE BRAKE RETARDER HI/LOW switch in
the HI position.
(6)
Place positive (+) probe of multimeter on wire no 1714
at ENGINE BRAKE RETARDER HI/LOW switch.
(7)
Place negative (-) probe of multimeter on ground and
look for 10-14 volts on multimeter.
(8)
Place ENGINE BRAKE RETARDER ON/OFF switch in
the OFF position.
(9)
Turn ENGINE switch to OFF position.
(10) Remove jumper wire from ENGINE BRAKE relay.
(11) Install wire no 508/988 on ENGINE BRAKE relay.
Change 3 2-593.2
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