Section 1: Assembly & Set-up
SA20 Hydraulic Post Hole Diggers 317-215M
3/8/18
7
Skid Steer/Tractor Requirements
This Post Hole Digger is designed to attach to skid steers,
track loaders, or tractor front-end loaders equipped with a
skid steer type quick attach hitch that meets SAE. It will
also attach to the side of a tractor loader bucket. The
following requirements must be met:
Hydraulic pressure rating . . . . . . . . . 1,500 - 3,500 psi
Hydraulic flow rate
Low flow motor . . . . . . . . . . . . . . . . . . . . 6-15 gpm
Medium flow motor . . . . . . . . . . . . . . . . . 10-20 gpm
High flow motor . . . . . . . . . . . . . . . . . . . . 15-30 gpm
Hydraulic Connections . . . . . . . . . . . 1 - Duplex outlet
Power Machine Weight
Machine horsepower and weight must be capable of
controlling the Post Hole Digger under all operating
conditions. Light weight machines must not be used.
WARNING
!
To prevent serious injury or death:
Lightweight power machines may need weight added to the
rear to maintain steering control and prevent forward tipping
or side tipping caused by a heavy front load or lifting an auger
stuck in the ground. Consult your power machine Operator’s
Manual to determine proper weight requirements and
maximum weight limitations.
Torque Requirements
Refer to
“Torque Values Chart”
on page 32 to
determine correct torque values for common bolts.
Power Machine Shutdown Procedure
The following are basic power machine shutdown
procedures. Follow these procedures and any additional
shutdown procedures provided in your power machine
Operator’s Manual before leaving the operator’s seat.
1.
Reduce engine speed and shut-off all power to the
attachment.
2.
Park on solid, level ground and lower attachment until
it is flat on the ground or on support blocks.
3.
If shutting down a tractor, put tractor in park or set
park brake.
4.
Turn off engine, and remove switch key to prevent
unauthorized starting.
5.
Relieve all hydraulic pressures.
6.
If included, raise seat bar and move controls until
both lock.
7.
Wait for all components to come to a complete stop
before leaving the operator’s seat.
8.
Use steps, grab-handles, and skid-resistant surfaces
when getting on and off the power machine.
Section 1: Assembly & Set-up
Bucket Mount Assembly of Motor/Gearbox
Figure 1-1
Optional Bucket Mount Assembly
This arrangement is designed to bolt onto the side of a
tractor front-end loader bucket.
Motor/Gearbox Assembly
Refer to Figure 1-1:
1.
Locate backer plate (#1) on right-hand or left-hand
bucket sidewall in a location where it is most
convenient for operator to view auger.
2.
Using backer plate (#1) as a guide, locate and drill
four 9/16" dia. holes in bucket side wall.
3.
Attach bucket mount (#2) to bucket sidewall with
1/2"-13 x 1 3/4" GR5 bolts (#6), backer plate (#1),
and 1/2" flange nuts (#7) as shown. Tighten nuts to
the proper torque.
4.
Check orientation of motor/gearbox housing. Hose
guide (#4) must face rearward as shown. If needed,
rotate motor/gearbox housing as follows:
a. Pull cotter pin (#8) and remove clevis pin (#9).
b. Rotate motor/gearbox housing 180
o
and reinsert
clevis pin (#9).
c. Secure clevis pin with cotter pin (#8). Bend both
legs of cotter pin to keep it from falling out.
37265
NOTE:
Bucket Mounted Post Hole Diggers can be
mounted on the left- or right-hand side of bucket.
NOTE:
Vertical indicator arrow (#3) indicates auger
is vertical side to side and not front to back.
IMPORTANT:
Make sure hydraulic hose guide (#4)
is located on the back side of motor/gearbox
assembly as shown. If needed, rotate
motor/gearbox housing 180
o
.