WWW.TMGINDUSTRIAL.COM
16 / 33
Toll Free:1-877-761-2819
Special Applications
Trenching Between a Building and an Open Excavation
Start the trench at the building and trench toward the open excavation. Dig toward the open excavation until there is just
enough room to move the unit out from between the trench and open excavation.
Position the unit so the backhoe swing is over the centerline of the trench connection. Dig with the backhoe at an extreme
swing position and as close to the stabilizers as possible. Pile the soil on the opposite side of the trenches. Position the unit
forward so the two trenches can be connected. Pile the spoil on the opposite side of the trench.
Excavating on Slopes
When digging on slopes always face the backhoe upgrade whenever possible. It may be necessary to cut a level surface in the
hill for the backhoe to sit in when operating on slopes. This will allow the backhoe to sit level for digging the main excavation.
Pile the spoil from the surface downhill. When digging the main excavation, pile the spoil uphill.
Pipeline Leak Repair
To check for pipeline leaks, start by digging a bell hole about six feet wide and ten feet long. Then, dig lengthwise along the
pipeline to locate the leak. Once the leak is located, position the unit to dig at grade level on both sides of the pipeline. If a
section of pipe is to be replaced, strip the soil from both ends of the bell hole. Enlarge the hole enough to allow the workmen
adequate working space in the leak area.
Backfilling
To backfill an excavation, lower the extended bucket into the spoil pile. Curl the bucket and lift it clear of the spoil pile. Swing
the bucket to the excavation and extend the bucket. Return the bucket to the spoil pile and continue the cycle until the job is
completed.
Do not backfill by using the swing circuit and dragging the bucket sideways. Doing so could cause damage to the dipperstick,
boom, and swing cylinders or mainframe. Avoid constant jarring or hammering contact between the spoil pile and the loaded
bucket as this may cause premature wear to the backhoe pins and bushings.
Cold Weather Operation
For smooth operation in cold weather, let the tractor warm up. Slowly circle all of the cylinders several times to warm the oil in
the hydraulic system. The backhoe may operate erratically until the hydraulic oil has warmed to operating temperature.
When lowering a heavy load, ease it downward slowly. Never drop a loaded attachment and "catch it hydraulically". Stopping a
load after it has gained downward momentum places undue strain on the unit and may cause unnecessary damage to the
backhoe or tractor or even worse, personal injury. Before disconnecting hydraulic lines, relieve all hydraulic pressure.
Escaping hydraulic oil under pressure can have sufficient force to penetrate the skin causing serious personal injury. If injured
by escaping hydraulic oil, seek medical attention immediately.
Do not operate the backhoe if fittings are leaking or if hoses are damaged. A sudden line burst can cause the boom, or
dipperstick bucket to drop suddenly, causing damage to the tractor or backhoe or personal injury.
Before leaving the machine, stop the engine, remove the key, place all controls in neutral, and either set the parking brake or
place tractor in park as equipped.
