JLG 19AMI (3120758) Service Manual User Manual
Page 26
SECTION 2 - SERVICE PROCEDURES
2-12
– JLG Lift –
3120758
Shunt Assembly, Varistor, and SCR Rectifier
Replacement (See Illustration)
Shunt Assembly (Item #1)
1.
Carefully remove the screw from the end of the
shunt assembly. The white insulator may need to be
restrained to keep it from turning while removing the
shunt assembly fasteners. Also make note of the
position of each washer, nut and wire connector
when removing for later assembly.
SCR Rectifier Replacement (Item #2)
1.
Remove the wiring from the SCR Rectifier.
2.
Remove the nut securing the rectifier to the insulated
aluminum chassis bracket.
3.
Remove the SCR Rectifier.
Varistor Replacement (Item #3)
1.
Remove the fasteners securing the varistor to the
aluminum angle bracket (see illustration below). One
through the rear panel of the base with a short white
spacer and one at the long white insulator attaching
the shunt assembly to the bracket.
2.
Remove the varistor from it’s mount.
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