Справочник Пользователя для Stanley Black & Decker DH9000

12  DH USER MANUAL

1. Tip the drop hammer to a horizontal position. 

2. Gradually move the drop hammer past horizontal until the 

weight slides forward. This can be done in a controlled manner 

by shaking the weight out using the curl lever. 

3. Allow the Hammer to slide out until it hits against the Safety 

Pin. 

4. Return the drop hammer to horizontal and rest it on the 

ground and Shut the carrier off. 

5. On the under-side of the Hammer remove the Bolt and Peg 

Locking Plate that hold the Hammer Peg. 

6. Remove the Hammer Peg and replace it in the next hole. 

Tighten to 180 ft/lbs/240 Nm for the DH3500 and DH9000, 

for the DH1500 tighten to 140 ft lbs/190 Nm with the Bolt and 

Peg Locking Plate. See Figure 3 below.

Figure 3. Hammer Adjustment

7. Restart the carrier and SLOWLY raise the drop hammer 

until the Hammer slides down the column. 

It is recommended that only genuine Stanley parts are used. 

Genuine Stanley drop hammer parts are all checked for 

allowable tolerances. 

Although the drop hammer is a simple machine, it is subject 

to severe stresses and shocks during normal operation. A 

five-minute daily check will ensure that your drop hammer 

remains in good condition and will prevent unscheduled 

down time. 

Check that all the mount plate bolts that connect the drop 

hammer to the carrier are tight and torqued to the recom-

mended value. 

Check that the motor flange bolts are tight and secure. 

Rest the drop hammer in a vertical position on the concrete 

to be broken. The skids should be just resting on the concrete 

with some of the weight taken by the carrier. If a crack appears 

in the top surface of the concrete you can be sure it is broken 

all the way through. 

Actuate the hydraulics and the drop hammer will start to cycle. 

As the concrete cracks or breaks move the carrier. It is best 

to move while the hammer is raised and pause momentarily 

as the hammer strikes. 

Generally all that is required is to hit the concrete until it cracks 

and then move 6-12 inches /150-300 mm. Sitting in one place 

will pulverize the concrete and eventually the hammer will hit 

the column buffers. This is felt as a hard jarring action through 

the machine. 

With skid steers movement can be in any direction but gener-

ally moving in a reverse direction provides the best control. 

On excavators setting the machine down and moving in arc 

with the slew drive is usually the quickest method. 

It is important to keep the drop hammer as vertical as possible 

during operation as this provides the greatest impact. 

When breaking thinner concrete, the drop hammer may hit 

too hard and punch completely through. In this instance the 

hammer sticking into the concrete and stopping the carrier 

traveling can slow production. If this occurs adjust the impact 

of the drop hammer as described below. 

Hammer Peg

Hex Head Setscrew

Peg Locking Plate

Hammer Safety Pin

Hammer