FARMTECH FPD 30, Руководство оператора

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8
Operation
Detaching the Digger from the Tractor
Raise the boom to allow the auger to hang
vertically then lower it until the end rests on the
ground. Remove the PTO shaft and on hydraulic
diggers disconnect the hydraulic hoses. Move
the tractor slowly forward whilst lowering the
boom until the digger gearbox rests on the
ground. Stop the tractor and fully lower the
linkage. Disconnect the upper linkage pin then
the lower pins. It may be necessary to use a
hoist to take the weight of the digger.
Alternatively the digger can be removed with the
PTO still attached to the gearbox by drilling the
auger into the ground.
Attaching Assembled Digger to the Tractor
Position the digger with the PTO shaft removed
and gearbox and auger on the ground behind the
boom. Back the tractor into position, disable the
draft control and lower the linkage. Connect the
tractor arms to the digger pins, swing the digger
frame up and fit the boom on the tractor upper
hitch clevis, or connect the hitch post on a
hydraulic digger. Install the PTO shaft. Connect
the hydraulic hoses, if applicable.
Changing the Auger
Interchangeable augers of various diameters are
available for all post hole diggers. Augers have
double cutting teeth and range from 4 to 14
inches in diameter. Refer to the Specifications
section for the list of auger diameters available for
each model. All augers are of the same length
and are attached in the same way by two bolts
through the gearbox output shaft.
To remove the auger, raise the boom to allow the
auger to hang vertically then lower until the end of
the auger is about 100mm above the ground.
Stop the tractor engine and apply the parking
brake. Remove the two attaching bolts from the
upper end of the auger and pull down so that it
slides off the gearbox shaft. If the auger is tight
on the shaft loosen it by sharply striking the auger
tube with a hammer where it overlaps the
gearbox shaft. If it is necessary to strike the
auger longitudinally on the flighting to drive it off
the shaft place a piece of timber on the flighting to
avoid damage.
Clean and lightly grease the gearbox output shaft
and the inner tube of the new auger. Align the
bolt holes and slide the auger onto the gearbox
shaft. Install and securely tighten the two
attaching bolts.
Changing Auger Teeth and Pilot
When worn the teeth and/or pilot bit on the auger
head should be replaced to maintain good
digging performance. Two types of teeth are
available and both can be supplied as plain
forgings or with tungsten carbide tips for longer
life. Flat teeth are used for normal ground
conditions. Chisel teeth can be fitted for drilling in
rocky ground. Tungsten tipped teeth provide long
life in abrasive conditions but can become
chipped if used in very rocky conditions. Plain or
tungsten carbide tipped pilot bits are also
available. The same teeth and pilots fit all
augers.
When fitting chisel teeth to double toothed augers
it is normal to only fit chisels to the inner position
and retain the flat teeth in the outer position.
Chisels are rarely required in both positions.
The teeth are located in the socket of the auger
head by their U-shaped profile and are held in
place by a rubber retainer which is wedged
between the tooth and the socket. To remove the
tooth, place a small punch on the rear corner and
strike sharply with a hammer to drive it out of the
socket, refer diagram below.