Reg. codeAIB TAB 43COP 18402007-08

Maintenance instructions for

Hydraulic COP 1840HERock drills COP 1840HEX

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ATLAS COPCO ROCK DRILLS AB ÖREBRO � SWEDEN© Atlas Copco Rock Drills AB, 2007. All rights reserved.

No. 9852 1007 01e

SAFETY REGULATIONS� Important safety information is given at various points in these instructions.� Special attention must be paid to the safety information contained in frames and accompanied by a war-

ning symbol (triangle) and a signal word, as shown below:

indicates hazards or hazardous procedures which COULDresult in serious or fatal injury if the warning is not observed.

indicates hazards or hazardous procedures which COULDresult in injury or damage to equipment if the warning is notobserved.

The following safety rules must also be observed:

� Carefully read through all operating- and main-tenance instructions for the drill rig and rockdrill before putting the rock drill to use. Alwaysfollow the instructions given.

� Do not use or intervene in the rock drill unlessyou have been trained to do so.

� The rock drill may only be used for the pre-scribed purposes.

� Make sure that the drill rig has been maintai-ned in accordance with the current instructions.

� Make sure that all safety labels remain in pla-ce, and that they are kept clean and fully legib-le. See the spare parts list for details of labellocations and part numbers.

� Always wear a safety helmet and ear protec-tors during drilling. Any local regulations thatexist must also be observed.

� Before moving the drill rig or starting to drill,make sure that there are no personnel in theimmediate vicinity of the drill rig.

� Use Atlas Copco genuine parts only. Anydamage or malfunction caused by the use ofunauthorized parts is not covered by Warrantyor Product Liability.

� Never attempt to carry out maintenance whilethe drill rig is in operation.

� Those checks and adjustments that must bemade while the drill rig is in operation must becarried out by at least two persons. One per-son must man the control station and keep astrict watch over the work.

� To prevent injury during service and mainte-nance, all components that could possiblymove or drop must be supported safely onblocks or trestles, or secured by means ofadequately dimensioned slings.

� Before starting work on any of the systems,make sure that the hydraulic and air systemsare without pressure and that the electricalsystem is dead.

� Check that the hoses used are of the right qua-lity, and that all hose connections are in goodcondition and properly tightened.

WARNING

CAUTION

Contents Page

Safety regulations . . . . . . . . . . . . . . . . 2Action list . . . . . . . . . . . . . . . . . . . . 3Hose connections . . . . . . . . . . . . . . . . 4Tightening torques . . . . . . . . . . . . . . . 5Accumulators . . . . . . . . . . . . . . . . . . 6– Charging the accumulators . . . . . . . . . . 6– Checks in the event of hose vibration . . . . . 7– Changing the accumulators . . . . . . . . . . 8– Changing the return accumulator . . . . . . . 9Changing the hydraulic motor . . . . . . . . . . 9Filling with lubricating oil and bleeding the system 10

Setting of ECL lubricating system . . . . . . . . . 10Lubrication of gear . . . . . . . . . . . . . . . . 11Setting the damper pressure . . . . . . . . . . 11Setting the extractor-unit pressure (HEX) . . . . 11Removing the front head . . . . . . . . . . . . 12Checking the front head . . . . . . . . . . . . . 13Changing the flushing head and driver . . . . . 14Mounting the front head . . . . . . . . . . . . . 16Slinging . . . . . . . . . . . . . . . . . . . . . 18Long-term storage . . . . . . . . . . . . . . . . 18Recommended hydraulic oils and lubricants . . 19Stroke length setting . . . . . . . . . . . . . . . 19

2

Action list

Before starting up a new- ornewly overhauled rock drill: Page� Connect up the hoses . . . . . . . . . . . . 4� Charge the accumulators . . . . . . . . . . . 6� Select a suitable hydraulic oil and lubricant . 19� Fill the lubricating system with oil . . . . . . . 10� Adjust and set the lubricating system . . . . 10� Set the damper pressure . . . . . . . . . . . 11� Set the extractor-unit pressure (HEX) . . . . 11

Every shift� Check that air and lubricating oil come out

between the shank adapter and front guideand also out of the hole in the front head . . 13

� Check that the damper-pressure gauge on the drill rig shows the normal value. In case of deviation, adjust the damper pressure . . . 11

� Check that the shank-adapter threads are not damaged . . . . . . . . . . . . . . . . . 13

� Keep an eye on the hydraulic hoses. If they vibrate too much, check the accumulators . . 7

� Check that there is no leakage from the rockdrill. If the flushing medium leaks out of the overflow hole in the front head, change the seals and O-rings . . . . . . . . . . . . . . . 13

� When changing the shank adapter or remov-ing the front head, check the internal compo-nents, including the visible parts of the piston,driver and rotation chuck bushing . . . . . . . 13In the event of defect, remove to a suitable workshop for repair or replacement.

After the first shift when using a new- or newly overhauled rock drill� Tighten all threaded unions . . . . . . . . . 5

After every 40th percussion-hour� Grease the gear . . . . . . . . . . . . . . . 11� Tighten all threaded unions . . . . . . . . . 5� Check the safety labels on the accumulators.

Replace them if they are damaged or illegible . 6� Check the return accumulator . . . . . . . . 7

Every 400th percussion-hour:� Remove the rock drill from the drill rig and

send it to a suitable workshop for over-hauling*.

* The rock drill should be overhauled at suitable intervals, based on local conditions. The characteristics of the rock will have a great influence on the rate of wear, and thus on the required frequency of overhauling.

IMPORTANT� Observe great cleanliness when interve-

ning in the rock drill or its hydraulic cir-cuit.

� The following parts may be changed at theworksite in accordance with the instruc-tions given:– shank adapter– driver– front head parts– accumulators– hydraulic motor– screws– connections.

Other repairs must be carried out in a sui-table workshop in accordance with the

CAUTION� Take care during rod jointing and when

handling the drill bit. Mind your fingers!� Keep your clothing away from rotating

machine parts.Carelessness can lead to serious injury.� Always use ear protectors during drilling.

High noise levels damage hearing.� Never attempt maintenance or intervene

in the rock drill, connections or hoses whi-le the hydraulic, lubrication or flushingsystems are pressurized. Air or oil can squirt out at high pressureand high temperature, with the risk of serious injury to the eyes and skin.

WARNING� Before starting any maintenance work,

make sure that the electrical system isdead.

There is a risk of injury if these instructionsare not observed!

3

Hose connections

1. Drainage 2. Rotation to the left 3. Rotation to the right 4. Percussion mechanism, return 5. Percussion mechanism, intake 6. Flushing 7. Lubricating air 8. Damper, intake 9. Extractor unit, return10. Extractor unit, intake

Connecting the hoses� Clean the hose connections on the rock drill be-

fore removing the protective plugs (or caps).� Never remove a protective plug until the hose is

ready to be connected.� Always store the rock drill with all hose connec-

tions plugged. Use suitable protective plugs orcaps, and make sure that they are clean.

CAUTION� Never attempt maintenance or intervene

in the rock drill, connections or hoses whi-le the hydraulic, lubrication or flushingsystems are pressurized. Air or oil can squirt out at high pressureand high temperature, with the risk of serious injury to the eyes and skin.

� Pressure hoses with an internal diameterof 19 mm (3/4") or more are rated SAE 100R9R (i.e. high-pressure hose with four lay-ers of spirally wound steel-wire reinforce-ment). See spare parts list for drill rig.For safety reasons, these hoses must not,under any circumstances, be replacedwith hoses of a lower rating. There is a risk of injury if these instruc-tions are not observed!

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AIR

COP

1840HE

COP

1840HEX

4

Tightening torques

N.B. Tighten item Nos. 1–3 in the prescribed order.

Ref.No. Qty. Check point Torque Instructions Nm lbf.ft

1 2 Side bolts 300 220 Tighten the rear nuts 2 1 Front bolt 300 220 Tighten the front bolt 3A 2 Side bolts (HE) 350 260 Tighten the front nuts 3B 3 Side bolts (HEX) 300 220 Tighten the front nuts 4 3 Back head 220 160 Tighten the screws alternately to full torque

(uppermost screw last) 5 1 Regulating plug 80 60 6 4 Accumulators 220 160 Tighten the screws alternately to full torque 7 4 Hydraulic motor 65 48 Tighten the nuts alternately 8 2 Clamping attachment,

return accumulator 30 22 9 4 Rock drill mounting 250 185 Tighten the screws alternately to full torque10 1 Plug 45 3311 4 Valve covers 145 105 Tighten the screws alternately to full torque12 2 Connection plate 120 90 Tighten the screws alternately to full torque13 1 Flushing connection 300 22014 4 Inlet, flushing medium 90 65 Tighten the screws alternately to full torque15 1 Intake, extractor unit 120 9016 1 Return, extractor unit 120 90

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COP 1840HE COP 1840HEX

3A 2

3B

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COP

1840HEX

COP

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12

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Accumulators

The accumulators are fitted with safety labels asshown in the figure below.

1. Damper accumulator2. Intake accumulator3. Return accumulator4. Protective cap5. Valve nut6. Gas valve

Charging the accumulators� Remove the protective cap (4).� Open the valve nut (5) by 2–3 turns, and con-

nect the gas hose.� Open the gas valve (6).Charge the accumulators to the correct pressure, as follows:– Damper accumulator (1): 20–25 bar (290–360 psi)– Intake accumulator (2): 30-40 bar below the collaring pressure (435-580 psi)NB. It is better to undercharge rather than over-charge the accumulators

� Tighten the valve nut (5) and close the gas valve(6).

� Remove the gas hose and fit back the protectivecap (4) to the accumulator valve.

The return accumulator (3) must not be charged.

WARNING� The accumulators must be charged with

nitrogen (N2) only!Other gases can cause an explosion.

CAUTION� Do NOT charge the accumulators until

they have been fitted to the rock drill.There is a risk of injury if these instruc-tions are not observed!

= Read the instruction book carefully before servicing or changing

= Must be charged with nitrogen only

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Checking the accumulators in the event of hose vibration

Damper accumulator (1) and Intake accumulator (2)1. Press in the pin on the test valve (7). If the ac-

cumulator is charged, the pin will stick out by4.5 mm and give a firm resistance when pres-sed in.N.B. The damper-accumulator pin is somewhateasier to press in.If it is easy to press in the pin, it means that the-re is no gas pressure (diaphragm damaged ordefektive charging valve).

2. Change the accumulator if it is not functioningproperly (see page 8).

3. After fitting a new accumulator, charge it with nitrogen.

Return accumulator (3) 1. Put the rock drill in the horizontal position, as

shown in the figure.2. Remove the plug with O-ring (8). If oil comes

out, the diaphragm is damaged or the accumu-lator has been charged with too high pressure.

3. Fit a new diaphragm or charging valve as ne-cessary, or replace the accumulator altogether,and then charge the accumulator.N.B. Do not check the gas pressure to often,since the valve seat can be easily deformed byrepeated opening and closing. In fact, it is advi-sable to change the charging valve quite frequ-ently.

4. If the diaphragm is touching the outer pipe,press down the diaphragm using a blunt, cylindrical mandrel (ø 7–9 mm). See fig. A.For the correct diaphragm position, see fig. B.1.Put the rock drill in the horizontal position, asshown in the figure.

1. Damper accumulator2. Intake accumulator3. Return accumulator7. Test valve8. Plug with O-ring

A

B

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Changing the accumulators

Removal

Remove the accumulators (1 and 2) together withthe O-rings (3) by removing the screws (4 and 5).

Now send the accumulators to a workshop foroverhauling!

Mounting

Fit the sealings (3) into the grove in the intermedia-te part (7) and then fit the accumulators (1 or 2) tothe intermediate part (7).

Fit the damper accumulator (1) to the left-handside of the rock drill. Fit the intake accumulator (2)to the right-hand side of the rock drill, i.e. the hoseside. Tighten the screws (4 and 5) alternately to atorque of 220 Nm (160 lbf.ft).

Now charge the accumulators with nitrogen (N2).See page 6.

CAUTION� Release all gas before removing the ac-

cumulators from the rock drill.To do this, remove the protective cap (A),loosen the valve nut (B) and open it by 2–3 turns.There is a risk of injury if these instruc-tions are not observed!

CAUTION� Mount the accumulators to the rock drill

using undamaged original screws.The intake accumulator (2) must have twoscrews (4) of length 100 mm.The damper accumulator (1) must havetwo screws (5) of length 70 mm.Change both screws at the same time,even if only one of them is corroded (ordamaged in some other way).Defective screws can cause dangerous oilleakage, or can cause the accumulator tobe blown off.Squirting oil can seriously injure the eyesand skin.Parts that come loose can cause seriousinjury.

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Changing the return accumulator

Removal

Disconnect the hydraulic hose (8) from the returnaccumulator (3).

Remove the return accumulator (3) by removingthe nuts (2), screws (1), screw (4) and holder (6).

Pull off the clamp (5) and unscrew the accumulatorfrom the nipple (7).

Now send the accumulator to a workshop foroverhauling!

MountingFit the return accumulator (3) to the nipple (7) andtighten in such a way that the plug (9) is accessiblefor checking the accumulator diaphragm.

Slide the clamp (5) on to the accumulator, and fitthe holder (6) by means of the screws (1 and 4)and nuts (2).

Connect the hydraulic hose (8) to the return accumulator (3).

Changing the hydraulicmotor

RemovalDisconnect the hydraulic hoses (1).

Remove the return accumulator (3).

Remove the nuts (2) and take off the hydraulic mo-tor (3).

Pull out the coupling (4).

MountingMake sure that the circlip (5) is fitted into the coup-ling (4).

Grease the splines inside the coupling, and slidethe coupling on to the output shaft of the hydraulicmotor (3).

Fit the hydraulic motor (3) with gasket (7) to the cylinder (6). Change the gasket if it is damaged.

Tighten the nuts (2) to a torque of 65 Nm (48 lbf.ft).

Connect the hydraulic hoses (1). Check that themotor rotates in the correct direction.

CAUTION� Before starting work on any of the sys-

tems, make sure that there is no pressurein the hydraulic and air systems.

� Pressure hoses with an internal diameterof 19 mm (3/4") or more are rated SAE 100R9R (i.e. high-pressure hose with four lay-ers of spirally wound steel-wire reinforce-ment). See spare parts list for drill rig.For safety reasons, these hoses must not,under any circumstances, be replacedwith hoses of a lower rating.

There is a risk of injury if these instructionsare not observed!

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Filling with lubricating oil and bleeding the system

� Check the oil level in the lubricating-oil container(1) once a shift. Observe a high standard of cle-anliness and fill with oil of the right quality (seepage 19). The lubricating-oil container holds 5litres.

� If the lubricating system has been empty ofoil, it must be bled after filling. This is done as follows:– Loosen the cap (6) and let the lubricating oil escape until all air has been discharged from the lubricating oil pump. Now tighten the cap.– Start the lubricating system and loosen the hose connection at pressure gauge (7), so that all air is released from the system. Now tighten the hose connection.– Disconnect the lubricating-air hose (12) from the nipple (9) on the rock drill.– Start the lubricating pump and let it pump until oil comes out of the plastic hose (11). When re-starting (after standstill), oil must come out of the plastic hose directly when the lubricating pump is started.– Check that the plastic hose (11) for lubricating oil is of the correct length. – Re-connect the lubricating-air hose (12).

Setting of ECL lubricatingsystem1. Open the electrical cabinet.

2. Start the lubricating system (see the operator’sinstructions for the drill rig).

3. Check the lubricating air pressure at the rockdrill (9) using a pressure gauge (A). The pressu-re should be 2–3 bar. If the pressure is too low,clean the restrictor (8) or increase the diameterof the restrictor.

4. Observe the relay window (5) and adjust thelubricating oil dosage to 35-40 pulses/min forpump (13a) and 20-25 pulses/min for pump(13b), by means of the potentiometer (4).

5. After making the setting, check the LED (10) onthe lubricating pump to ensure that the right pul-se frequency has been obtained. Check alsothat air and lubricating oil comes out of the hole(B) in the front head and between the shankadapter and front guide.

1. Lubricating-oil container 2. Filler cap 3. Pulse relay 4. Potentiometer 5. Relay window 6. Cap, bleeding 7. Pressure gauge 8. Restrictor 9. Lubricating-airconnection

10. Light-emitting diode(LED)11. Plastic hose12. Lubricating-air hose13a. 3217 8667 50 old13b. 3217 8667 52 new

A. Pressure gauge

IMPORTANT� Use the recommended lubricating-air pres-

sure and the recommended lubri-cating oil.Certain moving parts of the rock drill arelubricated by means of oil-mixed compres-sed air. It is important that these parts re-ceive good lubrication.

CAUTION� Never intervene in the lubricating system

while it is pressurized.Lubricating oil can squirt out, with therisk of injury to the eyes and skin.

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Min. oil level

A

B

B

B

9

8

610 12

724 V

I+

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Lubrication of gear

� Remove the bleeder plug (1).� Grease the gear through the nipple (2) until grea-

se comes out of the hole (3). Use heat-resistantgrease (see "Recommended hydraulic oils andlubricants", page 19).

� Fit back the plug (1).

Setting the damper pressure1. Shut completely the constant-flow valve (B) on

the drill rig.2. Connect a pressure gauge (A) [calibrated from

0 to 60 bar] between the hose and the dampernipple (1).

3. Pressurize the damper circuit.

4. Check that the shank adapter is unloaded, andthat it has been pushed into the forward posi-tion.

5. Adjust the constant-flow valve until the pressu-re gauge (A) reads 30–35 bar.

6. Read off the pressure on the damper pressuregauge on the drill rig.If the pressure gauge later shows a different va-lue, make a new pressure setting.

7. Disconnect the pressure gauge (A) and re-connect the hose to the nipple (1).

Setting the extractor-unitpressure (HEX)1. Close the constant-flow valve (B) on the drill rig

completely.2. Connect a pressure gauge (A) [calibrated from

0 to 60 bar] between the hydraulic hose and theextractor-unit intake nipple (P).

3. Connect the circuit for the extractor unit by acti-vating feed reverse and running the cradle tothe stop at the rear end of the feed beam. Holdthe feed lever in the "feed-reverse" position.

4. Adjust the constant-flow valve (B) until the pres-sure gauge (A) reads 20–25 bar.

5. Disconnect the pressure gauge (A) and re-connect the hydraulic hose to the extractor-unitintake nipple (P).

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Removing the front head

N.B. Always clean the outside of the rock drill befo-re disassembly.

COP 1840HERemove the flushing hose (5).

Remove the connection plate (1) and nipple (2) byremoving the screws (3) and washers (6).

Remove the cup seal (4).

Remove the front side-bolt nuts (3) with their washers (2).

Remove the front head (1) by tugging the shankadapter (4).

Now pull out the shank adapter (4) from the fronthead (1).

Check the internal components of the front headwhen changing the shank adapter.

COP 1840HEXRemove the front side-bolt nuts (3) with their washers (2).

Remove the front head (1) by tugging the shankadapter (4) or by tapping the front head with a cop-per hammer.

Now pull out the shank adapter (4) from the fronthead (1).

Check the internal components of the front headwhen changing the shank adapter.

CAUTION� Never attempt maintenance work while the

drill rig is in operation.� Before starting work on any of the sys-

tems, make sure that there is no pressurein the hydraulic and air systems.

There is a risk of injury if these instructionsare not observed!

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Checking the front head

� Check that air and lubricating oil come out be-tween the shank adapter (5) and front guide (2), and also out of the hole (B).

� Blow clean the lubricating oil ducts (A) in thefront head (1) using compressed air, and checkthat the restrictors (10) are open.

� Change the guide (2) if its internal diameter isgreater than 53 mm.

� Check the O-rings and flushing seals (3) if air isescaping from the hole (C) in the front head.Change the O-rings and flushing seals if theyare worn or damaged.

� Change the flushing head (6) if it is seriously cor-roded, or if it contains cracks.

� Change the stop ring (7) if it is worn by morethan 1 mm.

� Change the extractor-unit piston (12) if the surfa-ce toward the shank adapter has worn by morethan 1 mm.When changing the extractor-unit piston, checkthe seals and O-rings (13). Change them if theyare worn or damaged.

� Look inside the gear housing and check the spli-nes of the driver (8). If the splines are less than2 mm in width, the driver must be changed (seepage 14).Fit a new driver with the aid of a suitable mandreland a copper hammer.

� If the rotation chuck bushing (9) is worn by morethan 1 mm, or if the striking surface of the im-pact piston (4) is damaged in any way, the rockdrill must be sent to a suitable workshop for over-hauling. See the overhauling instructions. NB!Fit the rotation chuck bushing so that the lubrica-tion grooves (D) face the damper piston (14).

� Change the shank adapter (5) if the thread isworn out or the impact surface is upset or chip-ped, or if the front or rear end surfaces of thesplines are worn.

� Check that the drill collar (11), which must beused in upwards-directed drilling, is not dama-ged and that it rotates with the shank adapter.

3 3 6 3 3

13 12 13 13

2

53 mm

5

2 mm

81 mm

1 mm

COP 1840HE

HE HE HEX

COP 1840HEX

HEX

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5 1 3 6 3 3 A 8 9 10

42 3 C 7

11

12 C B 9

112

5 13 1 13 13 3 3 3 3 8 A 106

4

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1 mm 2D

14

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Changing the flushing head and driver

Disassembly

Remove the flushing hose (1) from the nipple (2).

Remove the nipple (3) and its O-rings.

Press the disassembly tool (A) into the gear hou-sing (4) until it comes to a stop, i.e. until the spli-ned part of the tool has passed the splines of thedriver (5).

Turn the disassembly tool clockwise a little.

Tap out the driver (5) and flushing head (6) by stri-king with the impact hammer (B).

CAUTION� Take care when removing the flushing

head and driver. Mind your fingers!

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Assembly

If the rotation chuck bushing (3) has been remo-ved, fit it back and tap into place eith the aid of asuitable copper mandrel.

NB! Fit the rotation chuck bushing so that the lubri-cation grooves (D) face the damper piston (14).

Tap the driver (2) into the rotation chuck in thegear housing (1) with the aid of a mandrel (A) anda copper hammer.

Fit the O-rings (3) and seals (4) into the flushinghead (2).

IMPORTANT! The seals (4) must be turned asshown in the figure opposite.

Place the flushing head (2) into the cover (1) andtap it in using a copper hammer. Check carefullythat the flushing intake in the cover lines up withthe hole in the flushing head.

Fit the O-rings (5 and 6) and back-up ring (7) on tothe nipple (8).

Fit the nipples (8, 9 and 10) and the nut (11).

Tighten the nipple (8) to a torque of 300 Nm (220 lbf.ft) and the nipple (9) to a torque of 180 Nm(130 lbf.ft).

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Mounting the front headCOP 1840HE

Fit the stop ring and shank adapter (4) into thefront head (1).

Check that the pin (6) is fitted into the cover. Fitthe front head (1) on to the side bolts (5).

Fit the washers (2) and nuts (3).

N.B. Before assembly, smear the threads with gre-ase (type NEVER-SEEZ).

Check the tightening torques of the rear side-boltnuts and front side bolt (see 1–2, page 5).

Now tighten the nuts (3) alternately to a torque of350 Nm (260 lbf.ft).

Fit the cup seal (4) into the flushing head.

Fit the connection plate (1) to the front head usingthe washers (6) and screws (3). Tighten thescrews (3) to a torque of 90 Nm (65 lbf.ft).

Change the seal washer (7) if it is damaged.

Fit the nipple (2) to the connection plate, andtighten to a torque of 300 Nm (220 lbf.ft).

Connect the flushing hose (5) and tighten the coup-ling nut.

After assembly, check that air and lubricatingoil come out of the hole in the front head andalso between the shank adapter and the frontguide.

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COP 1840HEX

Fit the shank adapter (4) into the front head of theextractor unit.

Check the tightening torques of the rear side-boltnuts and front side bolt (see 1–2, page 5).

Fit the cylindrical pin (5).

Fit the front head (1) over the stud bolts (6).

Fit the washers (2) and nuts (3).

N.B. Before assembly, smear the threads with gre-ase (type NEVER-SEEZ).

Tighten the nuts (3) alternately to a torque of 300 Nm (220 lbf.ft).

Connect the flushing hose to the nipple (7).

After assembly, check that air and lubricatingoil come out of the hole in the front head andalso between the shank adapter and the frontguide.

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Slinging

Long-term storageIf the rock drill is not going to be used for a longtime, the following precautions should be taken:

� Check that all connections, including the one forthe flushing medium, are properly plugged orcapped. Use clean protective plugs or caps ofthe right size.

� Clean the rock drill thoroughly. Use a degre-asing agent and hose down the rock drill with wa-ter.

� Thoroughly clean the front head parts that are incontact with the flushing medium, especially inthe case of high air humidity. After cleaning, oilthe parts with clean hydraulic oil.

� Release the gas from the accumulators (see in-structions on page 8).

� Store the rock drill in a dry place.

Make sure that the rock drill is safely slung for lifting. Make sure that the rock drill is securely anchored for transportation.

Rock drill weights, approx.COP 1840HE . . . 184 kg (405 lbs)COP 1840HEX . . 244 kg (540 lbs)

CAUTION� Lifting gear and slings must be approved

for a weight of 500 kg (1100 lbs).

Faulty lifting gear can cause the rock drillto move unpredictably or drop.Incorrect handling can result in crush injuries.

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Recommended hydraulic oils and lubricants

Stroke length settingBasic setting 2.

Plug (63) is fitted on cylinder (66).

Adjust piston stroke length by turning the plug. The-re are three different positions. They are indicatedon the plug (63) by punched dots. When two dotsappear upwards the setting is 2.

Lubricant Recommendation

Hydraulic oil � Use a mineral-base or synthetic (polyalpha-olefin or diester based) hydraulic oil with good anti-wear, anti-rust,anti-oxidation and foam inhibiting properties, and with good air and water separation characteristics. Choose anoil with viscosity grade (VG) and viscosity index (VI), in accordance with the table below. An oil with a high viscosity index is less sensitive to the effects of temperature.

Hydraulic oil temperature in tank oC ( oF) Viscosity ViscosityNormal operating temp. Min. starting temp. Max. temp. grade VG index VI(viscosity 25–50 cSt) (viscosity min. 1000 cSt) (ISO 3448)+50 to +70 (122 to 158) +5 (41) 80 (176) ISO VG 100 Min. 100+45 to +60 (113 to 140) –5 (23) 75 (167) ISO VG 68 Min. 100+35 to +50 (95 to 122) –10 (14) 65 (149) ISO VG 46 Min. 100+25 to +40 (77 to 104) –15 (5) 55 (131) ISO VG 32 Min. 100+10 to +25 (50 to 77) –25 (–13) 35 (95) ISO VG 15 Min. 100

Air tool oil � Use a mineral based air tool oil.Ambient temperature oC ( oF) Viscosity grade (ISO 3448)–30 to 0 (–22 to +32) ISO VG 32–68–10 to +20 (14 to 68) ISO VG 68–100+10 to +50 (50 to 122) ISO VG 100–150

Grease � IMPORTANT! Because of the operating temperature in the rock drill gear housing (see "Lubrication of gear"), always use a high-temperature grease containing an ashless thickening agent and additives that give resistance to oxidation and rust. The grease should also have good resistance to water.Grease properties NLGI-number 2 Base oil viscosity 110 cSt at 40 oC (104 oF)

Dropping point 250 oC (480 oF) Operating temp. –20 to +150 oC (–4 to 300 oF)

1250

018

4 95

63

66

19