Pengo DT-5 - Manual (Page 21)

Two Speed (DT & RT) Series Manual 21
DRILLING OPERATION ONLY
After steps 1-3 above have been completed continue
with the following steps for drilling applications.
4. When the auger has penetrated the ground about
24” (610mm), raise the auger from the hole to clean out
the loose material.
5. Once the required hole depth is reached, allow the
auger to turn a few seconds at this depth to clean the
hole.
6. Stop rotation of the auger and raise the auger out of
the hole. Swing the auger away from the newly drilled
hole. Spin the lose material off the auger.
Note: Do not reverse the auger rotation while the auger
is still in the hole. The lose material will back fi ll the
hole.
If necessary, repeat steps 4 through 6 to obtain a cleaner
hole.
OPERATIONS TO AVOID
1. In some soil conditions or when excessive down
pressure is applied, the auger may “screw” itself into
the ground. This can cause the auger to become stuck
causing the Drive Unit to stall. If this situation occurs,
reverse the auger rotation and slowly raise the auger
from the hole.
2. If the auger becomes lodged under rocks, tree roots,
or other large obstructions, do not attempt to raise the
auger out of the ground. See Step 1 of this section to
relieve the auger.
3. Avoid excessive side loading. This can cause damage
to both the Drive Unit and the auger bit.
4. Keep all auger teeth and pilot bits in good condition.
Avoid using damaged teeth and holders.
Before operating the Drive Unit ensure it is properly lubricated
and inspected for any worn or damaged areas. Only a
minimum amount of time and effort is required to regularly
lubricate and maintain the Drive Unit. Preventive maintains
will help ensure long life and trouble free operation.
LUBRICATION MAINTENANCE
The Drive Unit must be properly lubricated to achieve the
most effi cient operation. Clean excess grease, gear oil, and
hydraulic fl uid for the Drive Unit. This is especially important
in sandy conditions.
HYDRAULIC OIL MAINTENANCE
CLEAN HYDRAULIC OIL IS ESSENTIAL!
80% of all hydraulic component failures are caused by
contamination of the hydraulic oil. Always keep all dirt and
other contaminates from entering the hydraulic system
during disconnect and connect operations. Always use dust
caps and plugs on all quick disconnects when not in use.
Tightly cap all hydraulic openings to hold oil in and keep dirt
and other contaminates from entering hydraulic systems.
HYDRAULIC HOSE MAINTENANCE
Inspect all hydraulic hoses daily for cracked and brittle
covers caused by excessive heat. Reduced viscosity of
hydraulic oil occurs at higher operating temperatures and
causes a breakdown of fluid additives, such as wear
inhibitors. Excessive heat will cause higher internal leakage
in the Drive Unit motor, which will make the Drive Unit less
effi cient. It can also cause seals in the drive unit motor to
become brittle and crack. Replacement of hoses before
failure will prevent loss of hydraulic oil and down time.
OUTPUT SHAFT LUBRICATION MAINTENANCE
Ensure that the output shaft is properly greased on a regular
basis. The grease port for the output shaft is located near
the shaft. See Grease Port location fi gure below.
MAINTENANCE INSTRUCTIONS OPERATING PROCEDURES CONT.
Grease Fitting
IMPORTANT: Do NOT over fi ll grease cavity! Too much
grease can compromise the output shaft seal.
Only a small amount grease (.50-1.0 oz) is required every
100 hours of use.
Recommended grease type:
Lithium NLGI 2
Viscosity @ 40 deg C: 220