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FG10/PG05 Service Manual ◄ 11
OPERATION
Cross Section of Typical Rail
Figure 3. Prole Grinding
USING THE EXTENSION ASSEMBLY
The extension assembly (128) can be used at anytime
by simply connecting it to one end of the grinder at the
barrel nut (61) and clamping it in place by turning the
adjustable handle (44).
CONNECTING THE HOSES
1. Wipe all hose couplers with a clean lint-free cloth
before making connections.
2. Connect the hoses from the hydraulic power source
to the hose couplers on the grinder. It is a good prac-
tice to connect the return hose rst and disconnect
it last to minimize or avoid trapped pressure within
the grinder motor.
3. Observe ow indicators stamped on hose couplers
to be sure that oil will ow in the proper direction.
The female coupler is the inlet coupler.
NOTE: The pressure increase in uncoupled hoses
left in the sun may result in making them difcult to
connect. When possible, connect the free ends of
operating hoses together.
OPERATING PROCEDURES
1. Observe all safety precautions.
2. Always start the grinder with the grinding wheel
away from the work surface by turning the hand-
wheel counter clockwise to raise the wheel.
3. Move the hydraulic circuit control valve to the “ON”
position.
4. Squeeze the trigger momentarily. If the grinder does
not operate, the hoses might be reversed. Verify
correct connection of the hoses before continuing.
5. Start the grinder and move the grinding wheel to the
work surface by turning the handwheel clockwise.
Cross Section of Typical Frog at 1/2” Point
Figure 1. Grinding the Wings of a Frog
GRINDING THE POINT
For grinding the point of a frog, place the grinder on top
of the point with the rollers (91) resting on the top of
the point. Adjust each wheel pivot (86) to the position
shown in gure 2. Grinding is accomplished by moving
the grinder back and forth in line with the rail. It may
be necessary to rotate the entire grinder 180 degrees
and place it on the other side of the point in order to
completely grind the width of the point. The extension
assembly (128) is normally used during point grinding
operations.
Cross Section of Typical Frog at 1/2” Point
Figure 2. Grinding the Point of a Frog
PROFILE GRINDING
For prole grinding of rail, place the grinder on top of
the rail with the rollers (91) resting on top of the rail to
be ground. Adjust each wheel pivot (86) to the position
shown in Figure 3. Grinding is accomplished by moving
the grinder back and forth in line with the rail.