Operation - Stanley GR29 User Manual

PREPARATION PROCEDURES
CHECK THE POWER SOURCE
1. Using a calibrated flow meter and pressure gauge,
check that the hydraulic power source develops a
flow of 4-12 GPM/15-45 LPM at 950-2000 psi/67-
140 bar.
2. Make certain that the hydraulic power source is
equipped with a relief valve set to open at 2100-
2250 psi/145-155 bar minimum.
3. Check that the hydraulic circuit matches the tool for
open-center (OC) or closed-center (CC) operation.
CHECK THE TOOL
1. Make sure all tool accessories are correctly installed.
Failure to install tool properly can result in damage
to the tool or personal injury.
2. There should be no signs of leaks.
3. The tool should be clean, with all fittings and
fasteners tight.
CHECK TRIGGER MECHANISM
1. Check that the trigger operates smoothly and is free
to travel between the "ON" and "OFF" positions.
2. Check that the trigger is set to disengage the grinder
when released.
CHECK HANDLE
Check that the cross handle is securely screwed into the
handle bracket. Remove any oil from the handle.
CHECK AND ADJUST WHEEL GUARD
1. Inspect the wheel guard for cracks and other
structural damage.
2. If necessary, adjust the position of the wheel guard
by loosening the two capscrews on the guard clamp.
Make sure the capscrews are tightened securely
after adjustment.
INSTALLING AND REMOVING GRINDING
WHEEL
1. Remove and set aside the jam nut from the output
shaft.
2. Position the grinding wheel over the shaft.
3. Screw the jam nut down onto the spindle shaft.
Tighten the nut securely by using two open-end
wrenches, one wrench on the flats of the spindle
shaft, the other wrench on the jam nut.
4. Remove the grinding wheel by loosening the jam
nut.

OPERATION

Never over-tighten the grinding wheel jam nut by
impacting either wrench with a mallet or hammer.
Sufficient torque is attained by hand tightening the
USE OF DEPRESSED-CENTER WHEEL
ADAPTER
The Depressed-Center Wheel Adapter (part number
05194) must be used with wheels having a cupped or
depressed center.
CONNECT 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 tool fittings or quick disconnects. It is good
practice to connect return hoses first and disconnect
them last to minimize or avoid trapped pressure
within the tool.
3. Observe the arrow on the couplers to ensure that the
flow is in the proper direction. The female coupler on
the tool is the inlet (pressure) coupler.
4. Move the hydraulic circuit control valve to the "ON"
position to operate the tool.
5. Squeeze the grinder trigger momentarily. If the
grinder does not operate, the hoses might be
reversed. Verify correct connection of the hoses
before continuing.
Note: If uncoupled hoses are left in the sun, pressure
increase inside the hose may make them difficult to
connect. Whenever possible, connect the free ends
of the hoses together.
TOOL OPERATION
For best results, use only STANLEY approved
accessories. They have been designed and selected to
get the most from the tool.
Review the safety precautions given at the front of this
manual before operating the tool.
Remember to grip the tool with both hands at all times
during startup and operation and be sure you have full
balance before starting grinder rotation. Always keep
your body away from the "plane of rotation" of the
grinding wheel.
Always start the grinder with the wheel away from the
work surface. Start hydraulic flow at one GPM and slowly
nut with two open end wrenches.
GR29 User Manual ◄ 11