Troubleshooting & repair, Stator/rotor removal and replacement (continued) – Lincoln Electric POWER-ARC 4000 SVM103-A User Manual
Page 73
POWER-ARC 4000
TROUBLESHOOTING & REPAIR
F-32
STATOR/ROTOR REMOVAL AND REPLACEMENT (continued)
FIGURE F.11 - ROTOR WITH STATOR REMOVED
ROTOR
THRU-BOLT
ROTOR REMOVAL PROCEDURE
1. To remove the rotor, double check that the
spark plug wire is disconnected. You will
be turning the rotor during this procedure,
and this could accidentally cause engine
kickback.
2. With an impact wrench, remove the rotor
thru-bolt. See Figure F.11. If an impact
wrench is not available, use the 1/2” box
wrench. Hold the rotor with one hand and
shock the wrench with the mallet to loosen
the thru-bolt. The thru-bolt has a star
washer and lock washer, beveled to con-
form to the rotor shaft. Pull out the thru-
bolt.
3. Install the long thru-bolt supplied with
Lincoln Electric Rotor Removal Kit S20925.
The slot head must face out. Screw in the
bolt with the slot head screw driver until the
bolt bottoms out on the engine crankshaft,
about 3/4”.
4. Turning it counterclockwise, screw in the
reverse thread bolt from the kit into the rotor
shaft until it bottoms out on the thru-bolt.
5. With an impact wrench, tighten the reverse
thread bolt until the rotor pops off the
engine crankshaft. If an impact wrench is
not available, use the 1/2” box wrench.
Hold the rotor with one hand and shock the
wrench with the mallet until the rotor pops
off the engine crankshaft.
6. Slide the rotor and blower (press-fitted to
the rotor) the rest of the way off the crank-
shaft.
REASSEMBLY PROCEDURE
1. ubricate the tapered engine crankshaft.
Slide the rotor onto the shaft.
2. Coat the rotor thru-bolt threads with Lincoln
E177-R retaining compound (Locktite( 277).
Place the beveled lock washers onto the
thru-bolt and insert it into the rotor shaft.
Hold the rotor and tighten the thru-bolt to
22 - 25 ft lbs.
3. Carefully install the stator, with the leads at
the 1 o’ clock position. IMPROPER HAN-
DLING OF THE STATOR CAN RESULT IN
SHORTED WINDINGS AND/OR LOST
OUTPUT.
4. Install the end bracket. Slide it on and
install the two top thru-bolts loosely to hold
the end bracket for the next step.
5. Install the end bracket support.