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Summary of Contents for SIG PLB 291K
- Page 1 PLB 291 ROCKDRILL SERVICE INSTRUCTIONS AND SPARE PARTS LIST MODELS: SIG.au PLB 291 DI...
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Page 2: Table Of Contents
Disassembling – Reassembling the Hammer Parts & Maintenance Data • Handle • Backhead • Control Lever • Distribution system • Piston • Cylinder washer bush • Rotating mechanism • Chuck insert Spare Parts List: SIG.au PLB-291DI Exploded Drawing: SIG.au PLB-291DI... -
Page 3: Safety Precautions
PLB 291 ROCKDRILL SAFETY PRECAUTIONS The safety precautions listed in the manual are intended to alert operator and helpers to the possible physical dangers inherent in the various stages of operating and/or maintaining equipment of this kind. All personnel involved in operating and/or maintaining this equipment must read and thoroughly understand the operating instructions before attempting to operate, or perform maintenance on the drill machine. -
Page 4: Technical Data/Ratings
PLB 291 ROCKDRILL TECHNICAL DATA/RATINGS Carefully memorize this tool’s operation and maintenance instructions. PLB-29DI PLB-29K DIMENSIONS Weight 30Kg 30Kg Length 690mm 690mm Piston diam. 90mm 90mm Piston stroke 65mm 65mm DRIVE Impact rate 2700BPM 2700BPM Optimal air pressure 5-6Bar 5-6Bar Air Consumption 5.3m /min at 6Bar... -
Page 5: Operation
PLB 291 ROCKDRILL OPERATION 1. Control Elements A. Turning Handle for leg extension (SIG.au PLB-29K only) B. Push button for leg retraction (SIG.au PLB-29K only) C. Air pressure is shut off D. Water flushing is ON Reduced air pressure is ON (spot drilling) E. -
Page 6: Lubrication
PLB 291 ROCKDRILL 3. Lubrication When drilling, ALWAYS have the automatic oil feeder PLO 20 or a POB 15 fitted to the air pressure line. (The closer the device is to the hammer, the safer it works). Make Sure that oil shows up at the drill rod shank. The bit flange must be damp with oil. The needed output may be regulated with the adjusting screw at the oil feeder. - Page 7 PLB 291 ROCKDRILL Maintenance The drill hammer is to be disassembled and cleaned periodically. At this opportunity the particular wear parts are to be checked accordingly to chapter ‘Components and Servicing Data’. Dirt Restrictor When replacing the dirt restrictor Part 60, care should be taken to insert it with Part 61 as shown.
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Page 8: Disassembling - Reassembling The Hammer
The frame-bolt nuts, Part 10, Are to be screwed down alternatively And in an uniform manner. In the SIG.au PLB-29K and SIG.au PLB-291K models, care is to be taken so not to jam the valve piston, Part 128 inside the handle. -
Page 9: Parts & Maintenance Data
PLB 291 ROCKDRILL Parts and Maintenance data 1. Handle (SIG.au PLB-29K and SIG.au PLB – 291K models only) Disassembly Disassembly the left shaft bolt, Part 10. Remove the head screw, Part 121. Withdraw the left lever, Part 123. Remove the supporting ring, Part 124. - Page 10 PLB 291 ROCKDRILL Valve piston – inside handle (Model SIG.au PLB-29K and SIG.au PLB-291K only) The valve piston, Part 130, may jam because of dirt or incorrect tightening of the side rod, Part 10. Check it for easy movement. To remove dirt that is causing jamming unscrew nut, Part 130, and remove the valve pin.
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Page 11: Control Lever
There is a standard and high performance valve chest assembly. They are recognized by a different diameter of the VALVE PLATE. The high performance unit fitted to the SIG.au PLB-291K and the SIG.au PLB-291DI models has a small outside and a larger internal diameter valve plate. -
Page 12: Cylinder Washer Bush
And dismantle with the help of Punch E as per drawing. Check valve plate, Part 74, for indentations. Max depth not to exceed 0.3mm. SIG.au PLB-29DI & SIG.au PLB-291DI Models only – Replace Mounting Bracket Bush, Item 04, when excessively worn. NOTE: Toavoid Bush slippage in the bore, do not Apply oil or grease when replacing. -
Page 13: Rotating Mechanism
PLB 291 ROCKDRILL Check inner diameter for wear. Maximum inner diameter 38.2mm If worn, push out sealing bush using a 41.5mm diameter header, (made on site), and a vice. With the help of an old percussion piston press in a new sealing bush. CAUTION The inner diameter of the sealing bush must fit over the outer diameter... - Page 14 PLB 291 ROCKDRILL Maximum wear on edge: Minimum twistspline width: 1mm Radius 1.5mm after this limit, replace ratchet ring. After this limit, replace ratchet ring. Chuck Nut, Part 91 Wear on splines: min. spline width 1mm If less than 1mm, Replace guide bush.
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Page 15: Chuck Insert
PLB 291 ROCKDRILL 8. Chuck insert (drill socket), Part 93 At regular periods, check the inner hexagon for face wear. To do so, use the wear gauge. Broken pistons and/or drill rods may be The consequence of worn out drill sockets. To Test: 1. - Page 16 PLB 291 ROCKDRILL 9. Cylinder Liner Replacement In order to maintain good air compression, it is important to check the cylinder liner bore for wear, cracks, corroded and pitted surface. If replacement is required proceed as follows: • Use safety glasses and leather gloves to avoid injury. Place the housing vertically on the top of the open bench vice or lock the housing hard on the side of the vice on the pivoting eye section.
- Page 17 PLB 291 ROCKDRILL Replacement of chuck insert NOTE: Where possible, use a hydraulic press when changing the chuck insert. CAUTION! If the chuck insert and chuck nut have to be changed at the same time, it is preferable to change the chuck nut first, as the old chuck insert forms a better support than the new one.
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Page 18: Spare Parts List: Sig.au Plb-291Di
PLB 291 ROCKDRILL SIG.au PLB 29 Rockdrill Parts List ITEM DESCRIPTION PART NUMBER Mounting Bracket Bolt 64 000 111 Mounting Bracket Assembly (Inc 1 & 5) 64 000 103 For 360 rotation of airleg assembly Bush 64 000 140 64 000 120... - Page 19 PLB 291 ROCKDRILL Valve Chest 64 263 260 Cylindrical Pin 64 258 130 Valve Plate 64 244 320 Valve Guide 64 263 270 Damper Ring 64 914 091 Housing, Silenced 64 263 173 Piston 64 262 364 Cylinder Washer Bush 64 262 350 Cylinder Washer 64 262 120...
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Page 20: Exploded Drawing: Sig.au Plb-291Di
PLB 291 ROCKDRILL...
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