Lincoln Electric SVM150-A service manual Reassembly Notes, Rotor/Stator/Engine Reassembly

Section TOC

Master TOC

F-66 F-66

TROUBLESHOOTING & REPAIR

ENGINE/STATOR/ROTOR REMOVAL AND REPLACEMENT (continued)

Return to

Return to Section TOC

Return to Section TOC

Return to

Return to Master TOC

Return to Master TOC

6.Double check that the spark plug wires are disconnected. You will be turning the rotor during this procedure, and this could cause engine kickback.

7.Hold the rotor shaft with locking pliers. With the 5/8" wrench or an impact wrench, remove the rotor thru-bolt. Hold the rotor with one hand and shock the wrench with a mallet to loosen the thru-bolt. The thru-bolt has a centering washer, tapered to conform to the rotor shaft.

8.Remove the thru-bolt and washer from the end of the rotor.

9.Install the appropriate long thru-bolt (two are provided) supplied with Lincoln Electric Rotor Puller Kit S20788. 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".

10.Turning it counterclockwise, screw in the left-hand thread rotor removal tool from the kit into the rotor shaft. Carefully prevent the rotor from turning - use locking pliers. Tighten the tool to approximately 50 ft lbs with the torque or impact wrench. The rotor should "pop" off the engine crankshaft.

11.If the rotor does not pop off, continue to carefully prevent the rotor shaft from turning and tighten the rotor removal tool an addi- tional 5 ft lbs. until the rotor pops off the engine crankshaft.

12.With the 7/16" wrench, remove the side fire- walls.

13.With the 9/16" wrench, remove the four bolts that hold the stator to the engine. There is one lock washer per bolt.

14.Carefully remove the stator/rotor assembly from the engine. Once the assembly is sep- arated from the engine, be careful that the rotor does not fall out of the stator.

15.Carefully remove the rotor from the stator. You can tap carefully on the end of the rotor shaft with a rubber mallet. Guide the rotor carefully to prevent damage to its core.

REASSEMBLY NOTES

Reassemble the rotor and stator to the Ranger 250 by carefully retracing the disassembly proce- dure steps in reverse order. Keep the following special points in mind as you proceed. A Lead Reconnection Checklist is provided here to aid in reassembly.

Rotor/Stator/Engine Reassembly

Refer to Figure F.30.

NOTE: Lincoln Electric recommends that you install a new bearing (Lincoln part #M9300-85) and tolerance ring (Lincoln part #S18044-9) any time the stator and rotor are reassembled.

1.Fit the rotor into the stator, being careful not to damage the rotor core against the stator. Position the rotor so that the laminations are at top and bottom and air gap at the sides. This will limit movement of the rotor.

IMPROPER HANDLING OF THE ROTOR CAN RESULT IN SHORTED WINDINGS AND/OR LOST OUTPUT.

2.Tap the rotor carefully with a mallet to fit the bearing all the way into the stator frame.

3.Clean the tapered engine crankshaft.

4.Using the hoist, carefully fit the stator/rotor assembly onto the engine crankshaft.

5.Install the four bolts that mount the stator to the engine. NOTE: Apply Loctite 271 thread sealant to the two bottom bolts on the ONAN engine, to prevent oil leakage from the crankcase. With the 9/16" wrench, draw the bolts up evenly in order to seat the rotor bearing properly. Tighten moving diagonal- ly from bolt to bolt.

Return to Section TOC

Return to Master TOC

RANGER 250