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F-57

F-57

TROUBLESHOOTING & REPAIR

STATOR/ROTOR REMOVAL AND REPLACEMENT (continued)

FIGURE F.24 - CHECKING ROTOR-STATOR AIR GAP

FEELER GAUGE

STATOR

ROTOR

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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.

6.Install the bottom two end bracket thru- bolts.

7.Tap the end bracket with the mallet as nec- essary to position it. Tighten the bolts to 22 - 25 ft lbs. Alternate tightening in order to pull the assembly together evenly. As you tighten, look through the brush hous- ing access door and watch the bearing to judge end bracket movement and align- ment.

8.Check the rotor-stator air gap with the long

.010 feeler gauge. The measurement is taken through the brush holder access door; see Figure F.24. Turn the engine with the recoil starter rope slightly so that the rotor "iron" is up to take the measurement. (The rotor has two flat sides, which are not measured for air gap.) Slide in the gauge. Then rotate the shaft 180 degrees and measure again. If the gauge does not clear, loosen the four end bracket thru-bolts, reposition the end bracket, retighten the bolts, and recheck the air gap. Repeat until the proper .010 minimum air gap is achieved (.030 maximum).

9.Tighten the end bracket support nuts and lock washers. Remove the 2 X 4 engine support.

10.Reinstall the brush holder assembly. Refer to the topic "BRUSH REMOVAL AND REPLACEMENT" in this section of the manual.

11.Slide the control box back into place.

12.Connect leads #201A and #202B to the field capacitor. Replace the cable tie if it was cut earlier.

13.Connect the green ground lead (GND-C) to the wiring harness loom.

14.Connect the W1 lead to the current trans- former.

15.Connect the 6 pin molex plug.

16.With the 5/16" nut driver, install the con- trol box assembly to the stator frame with 4 sheet metal screws.

17.Connect lead #14A to its location inside the control box assembly.

WELDANPOWER 125

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Image 95
Lincoln Electric SVM 113-A service manual Figure F.24 Checking ROTOR-STATOR AIR GAP Feeler Gauge