Lincoln Electric RANGER 250 SVM150-A Service Manual page 109

F-59
OUTPUT RECTIFIER BRIDGE AND CHOKE
REMOVAL AND REPLACEMENT (continued)
5. Using the 1/2" and 9/16" wrenches, hold
and loosen the nut holding the engine
choke cable to the back of the front panel.
Pull the cable through the front panel. Save
the sleeve and nut for reassembly.
6. With the 3/8" socket wrench, remove the
four screws holding the front panel to the
machine base. Tilt the front panel as far for-
ward as the attached leads will permit. Cut
any necessary cable ties.
7. With two 1/2" wrenches, remove heavy
leads W6, W11 and W7 and their bolt, lock
washers and flat washers from the negative
strap on the right side of the output rectifier.
8. With two 1/2" wrenches, remove heavy
leads W4 and W5 and their bolt, lock wash-
ers and flat washers from the positive strap
of the output rectifier.
9. With two 1/2" wrenches remove heavy
leads W1, W2, and W3 and their bolts, lock
washers and flat washers from the three
straps on the left side of the output rectifier.
10. With the 1/2" wrench or socket wrench,
remove the nuts and lock washers holding
the output rectifier to the machine mounting
bracket. You will need to reach through the
large access holes on either side of the rec-
tifier to place the wrench on these nuts.
11. Remove the output rectifier from the
machine.
Output Choke
1. Remove the output rectifier as described
above.
2. Using the 1/2" wrenches, remove the heavy
flex leads W8, W9 and W10 from the choke.
3. Using the 1/2" wrenches, remove the three
long bolts, lock washers, and nuts holding
the choke to the mounting bracket in the
machine base. Note that the lower right
corner of the choke has no bolt.
4. Carefully remove the choke.
TROUBLESHOOTING & REPAIR
RANGER 250
REPLACEMENT PROCEDURE
Output Choke
1. Place the choke into the machine so that
the three mounting holes line up with the
mounting holes in the machine mounting
bracket.
2. Insert the three long bolts through the choke
and the mounting bracket.
washer and nut on each bolt and tighten with
the 1/2" wrenches.
3. Using the 1/2" wrenches, attach the heavy
flex leads W8, W9 and W10 to the appropri-
ate choke lead connections. See the Wiring
Diagram.
Output Rectifier
1. Place the output rectifier into the machine so
that its mounting studs fit into the holes in the
bracket. Attach the nuts and lock washers
using the 1/2" wrench.
2. Attach heavy leads W1, W2, and W3 to the
three straps on the left side of the rectifier
plates. See Figure F.25 for placement.
3. Attach heavy leads W4 and W5 to the posi-
tive strap on the rectifier. See Figure F.25 for
placement.
4. Attach heavy leads W6, W11 and W7 to the
negative strap of the rectifier. See Figure
F.25 for placement.
5. Attach the front panel to the machine base
with four 3/8" screws. Replace any cable ties
cut during removal.
6. Insert the engine choke cable through the
case front, attach it with the 9/16" nut and
install the sleeve. Fit the end of the cable into
the hole in the choke control lever, then
attach the cable to the choke control lever in
the position noted at disassembly using its
5/16" clamp.
7. Perform the Case Cover Replacement pro-
cedure.
F-59
Place a lock