BHI HydroRam HK300S, Operations Manual & Parts List

Page: 19 / 51

BHI
Best Hammer Industries
- 16 -
5. Torque Chart [ Units: kg ․ m / N.m] / lb-ft ]
Item Torque Item Torque
Tension Bolt 350kg.m / 3432N.m / 2531 lb-ft
Accumulator
Assembly Bolt
100kg.m / 980N.m / 723 lb-ft
Accumulator
Cover Bolt
60kg.m / 588N.m / 433 lb-ft Mounting Bolt 230m / 2255N.m / 1663 lb-ft
6.
Valves function
1. Cylinder Adjuster Valve
The cylinder adjuster valve controls the length of the stroke and the power output of the
piston. Our Premium series hammers have two stages – by 1.2 times of the speed of the
breaker, the energy output is cut in 80%. When we deliver the Premium series hammers to
our customers in the overseas countries, we turn the Cylinder adjuster two (2) full turns
counter-clockwise to set the breaker at its fastest speed.
2. Adjuster Valve
In case you do not get the required speed, we recommend you to turn the adjuster valve
counterclockwise 1/4 turn per trial to get the required speed. Please note that turning will
cause the change of the pressure inside the power cell. Accordingly turn it slightly.
If the speed is faster than required, you have to turn the adjuster valve clockwise 1/4 turn
slightly to reduce the speed.
Note: Adjuster Valve should be adjusted less than 3 turns due to the change of working
pressure.
3. Adjustment of the Valves
There are three valves in the cylinder as shown below;
1) Blow Speed Control (Adjuster Valve)
- Initial (standard) turns: 2 turns
In case faster speed is needed,
B direction => turn it counterclockwise (Working
Pressure: Down)
In case of slower speed is needed,
A direction => turn it clockwise (Working Pressure: Up)
2) Blow (Striking) Frequency & Power control (Cylinder Adjuster Valve)
- Initial (standard) turns: 2 turns
In case of slower speed is needed,
A direction => turn it clockwise (Working Pressure: Up)
DO NOT TURN THE CYLINDER ADJUSTER VALVE MORE THAN TWO(2)
FULL TURNS FROM ITS SEATED POSITION OR IT MAY BLOW OUT OF THE HAMMER CAUSING
INJURY OR DEATH TO ANYONE IN THE VICINITY!
4. Blank Firing Prevention system (On-Off Valve)
(1) Initial (standard) turn: 0 Turn
(2) In case of Blank Firing Prevention system:
B direction => Max. 2 turn it counterclockwise
Note: We recommend you to use this system only for the special work. It is performed well
when the working tool is completely pushed into the materials to be broken.