Lincoln Electric RANGER 305 D Service Manual page 146

RANGER 305D
CHOPPER MODULE REMOV L ND REPL CEMENT (continued)
PROCEDURE
Removal
1. Turn the engine off.
2. Perform the Case Cover Removal
Procedure.
3. Perform the Chopper Module Capacitor
Discharge procedure.
4. Disconnect leads 23 and 25 at their in-line
couplings.
5. Using the 7/16" socket wrench, remove the
following leads. Label the leads before
removal. Cut cable ties as needed. Note
placement of leads and fasteners: screw,
lock washer, flat washer, small lead, heavy
lead.
6. Using a 3/8" socket wrench, remove the
three screws holding the power module
assembly to its brackets on the vertical baf-
fle. Remove the plastic strip with the top
two screws. Be sure to support the Power
Module as you remove the last screw.
FIGURE F.19 – EXCITER LE DS T1, T2, T3
B8
B1
HL W6
B2
B3
HL W4
HL W9
SL302
SL301
SL14
F 89
B7
HL W11
B4
B5
HL W5
B6
HL W8
SL13
7. Remove the Power Module assembly from
the machine.
TERMINAL
B4
B5
B6
B1
B2
B3
TROUBLESHOOTING & REPAIR
LEADS
HEAVY LEAD W11, SMALL
LEAD 14
HL W5, SL 13
HL W8
HL W6
HL W4, SL 301
HL W9, SL 302