Lincoln Electric SVM194-A 38TROUBLESHOOTING and REPAIRF-38, Rocker Adjustment Procedure, Tighten

Return to Section TOC Return to Master TOC

F-38TROUBLESHOOTING AND REPAIRF-38

ROCKER ADJUSTMENT PROCEDURE (continued)

FIGURE F.1 – FACTORY SET POINT DRILL MARK LOCATIONS

EXCITER BRACKET

Return to Section TOC Return to Master TOC

DRILL MARKS

ROCKER

Return to Section TOC Return to Master TOC

Return to Section TOC Return to Master TOC

PROCEDURE

When the rocker is set for the first time at the fac- tory, a 1/8" drill is used to mark the position of both the rocker and the exciter bracket. See Figure F.1 If a machine is not operating within the specified limits, and nothing else appears to be faulty, the rocker position should be checked. If the drill marks are not aligned, the rocker and/or the exciter brack- et should be reset to the original factory position.

If it has been determined that a rocker adjustment is necessary on an unaltered machine; the rocker should only be moved in very small increments, and the total movement should be no more than 1/2 the diameter of the drill mark.

IMPORTANT! The following procedures should only be attempted if all the other systems have been thoroughly checked and are functioning normally.

Setting the rocker if the factory drill mark is missing or invalid due to component replace- ment:

A tachometer will be required for this phase of the test. See The Engine RPM Adjustment Test for details about measuring engine RPM.

Initial rocker placement:

The rocker should be initially positioned so the cen- ter of brushes visually lines up with the center of the main poles. Lining up the four brush holder studs with the four exciter bracket mounting bolts is acceptable for initial placement. The rocker should be tight against the shoulder of the hub and the clamping screw should be tightened only enough to assure the rocker cannot move. DO NOT OVER

TIGHTEN.

IMPORTANT: Over tightening the rocker clamp screw can destroy the rocker.

CLASSIC® 300D & 300G