Magnetic Pick-Up Inspection / Adjustment - Hobart 60PL20 Operation And Maintenance Manual

(3) Magnetic Pick-up Inspection / Adjustment

Figure 8 shows how the magnetic pick-up is mounted. Typically, this area of the generator set
can be seen by opening the door on the front left side of the generator set and viewing the side of
the flywheel housing. The strength of the magnetic pick-up signal to the controller can be weak-
ened if the tip of the pick-up is too far from the flywheel ring gear or if it becomes damaged.. If
the pick-up is removed for any reason, or if the signal is weak, adjust the magnetic pick-up as fol-
lows:
(a) Loosen the jam nut on the pick-up, by turning it toward the wire end of the pick-up.
(b) Remove the magnetic pick-up and inspect for damage, replace if necessary. Clean the tip
and reinstall.
CAUTION: The pickup tip must be directly over a tooth and not between teeth when adjustment
is made.w
(c) Continue turning pick-up CLOCKWISE until it bottoms out (it has hit the ring gear teeth) .
(d) Back the magnetic pick-up out 1/4 to 3/4 of a turn COUNTERCLOCKWISE. This creates a
gap between the magnetic pick-up and the ring gear.
(e) Disconnect magnetic pick-up wires at the terminal strip (Figures 4 & 5)
(f) Start the engine and run at idle speed..
(g) Connect the pick-up wires to a voltmeter. The signal should read between 4 and 8 VAC.
(h) If the signal is weaker than 4-V AC, check connections. If necessary, check magnetic pick-
up continuity or idle speed setting on the fuel pump.
(j) Tighten the jam nut when the pick-up is properly adjusted.
(k) Reconnect the wires to the terminal strip.
December 31/91 Revised
OM-2053
1. Magnetic pick-up
2. Adjustment nut
Magnetic Pick-up Adjustment
(Typical)
Figure 8
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