Permon VK 17 User manual

OPERATION AND MAINTENANCE MANUAL
VK 17 and VKA 17
(old model VK 15)
PERMON s.r.o. tel: [phone]
Roztoky [phone]
27023 Křivoklát fax: [phone]
CZECH REPUBLIC email: [email protected]
www.permon.cz
SEIT 1826 - SINCE 1826
Design, manufacture, sales & service
of pneumatic tools

IMPORTANT SAFETY INFORMATION ENCLOSED. READ THIS MANUAL BEFORE
OPERATING TOOL.
IT IS THE RESPONSIBILITY OF THE EMPLOYER TO PLACE THE INFORMATION IN
THIS MANUAL INTO THE HANDS OF THE OPERATOR.
FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN
INJURY.
VK17 and VKA17 rock drills are designed for the drilling of low to high strength materials (e.g. concrete,
granite, sandstone, masonry bituminous asphalt etc).
Permon is not responsible for customer modifications of tools for applications on which Permon was not
consulted.
PLACING TOOL IN SERVICE
• Always operate, inspect and maintain this tool in accordance with all regulations (local, state, federal and
country), hat may apply to hand held/hand operated pneumatic tools.
• For safety, top performance and maximum durability of parts, operate this tool at 7.0 bar / 700 kPa
maximum air pressure at the inlet with 3/4” (19 mm) inside diameter air supply hose.
• Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting
any accessory on this tool, or before performing any maintenance on this tool.
• Do not use damaged, frayed or deteriorated air hoses and fittings.
• Be sure all hoses and fittings are the correct size and are tightly secured.
• Always use clean, dry lubricated air at 7.0 bar / 700 kPa maximum air pressure. Dust, corrosive fumes
and/or excessive moisture can ruin the motor of an air tool.
• Do not lubricate tools with flammable or volatile liquids such as kerosene, diesel or jet fuel.
• Do not remove any labels. Replace any damaged label.
USING THE TOOL
• Always wear eye protection when operating or performing maintenance on this tool.
• Always wear hearing protection when operating this tool.
• Keep hands, loose clothing and long hair away from rotating end of tool.
• Anticipate and be alert for sudden changes in motion during start up and operation of any power tool.
• Keep body stance balanced and firm. Do not overreach when operating this tool.
• Tool accessories may continue to impact briefly after throttle is released.
• Air powered tools can vibrate in use. Vibration, repetitive motions or uncomfortable positions may be
harmful to your hands and arms. Stop using any tool if discomfort, tingling feeling or pain occurs. Seek
medical advice before resuming use.
• Use accessories recommended by Permon.
• This tool is not designed for working in explosive atmospheres.
• This tool is not insulated against electric shock.
The use of other than genuine Permon replacement parts may result in safety hazards, decreased tool
performance, and increased maintenance, and may invalidate all warranties.
Repairs should be made only by authorised trained personnel. Consult your nearest Permon authorised
service center.
SPECIFIC WARNINGS
• Always wear eye protection when operating or performing maintenance on this tool.
• Always wear hearing protection when operating this tool.
• Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting
any accessory on this tool, or before performing any maintenance on this tool.
• Do not use damaged, frayed or deterlorated air hoses and fittings.
• Air powered tools can vibrate in use. Vibration, repetitive motions or uncomfortable positions may be
harmful to your hands and arms. Stop using any tool is discomfort, tingling feeling or pain occurs. Seek
medical advice before resuming use.

• Do not carry the tool by the hose.
• Keep body stance balanced and firm. Do not overreach when operating this tool.
• Operate at 7.0 bar / 700 kPa maximum air pressure)
• When wearing gloves and operating models with inside trigger, always be sure that the gloves will not
prevent the trigger from being released.
• Wear safety shoes, hard hat, safety goggles, gloves, dustmask and any other appropriate protective
clothing while operating the tool.
• Do not indulge in horseplay. Distraction can cause accidents.
• Keep hands and fingers away from the throttle lever until it is time to operate the tool.
• Never rest the tool or chisel on your foot.
• Never point the tool at anyone.
• Compressed air is dangerous. Never point an air hose at yourself or co–workers.
• Never blow clothes free of dust with compressed air.
• Be sure all hose connections are tight. A loose hose not only leaks but can come completely off the tool
and while whipping under pressure, can injure the operator and others in the area. Attach safety cables to
all hoses to prevent injury in case a hose is accidentally broken.
• Never disconnect a pressurised air hose. Always turn off the air supply and bleed the tool before
disconnecting a hose.
• The operator must keep limbs and body clear of the chisel. If a chisel breaks, the tool with the broken
chisel projecting from the tool will suddenly surge forward.
• Do not ride the tool with one leg over the handle. Injury can result if the chisel breaks while riding the
tool.
• Know what is underneath the material being worked. Be alert for hidden water, gas, sewer, telephone or
electric lines.
• Use only proper cleaning solvents to clean parts. Use only cleaning solvents, which meet current safety
and health standards. Use cleaning solvents in a well-ventilated area.
• Do not flush the tool or clean any parts with diesel fuel. Diesel fuel residue will ignite in the tool when the
tool is operated, causing damage to internal parts. When using models with outside triggers or throttle
levers, take care when setting the tool down to prevent accidental operation.
• Do not operate the tool with broken or damaged parts.
• Never start the tool when it is lying on the ground.
• This tool is not designed for working in explosive atmospheres.
• This tool is not insulated against electric shock.
OPERATION
Lubrication
Always use an air line lubricator with these tools.
Recommended environmentally friendly oils:
SETUZA PRIMOL EKO PNEU
BP BIOHYD SE46
ÖMV BIOHYD M 32
TOTAL HYDROBIO 46
Attach the lubricator as close to the tool as practical. After each one hour of operation and at the
beginning of each work shift, if an air line lubricator is not used, disconnect the air hose and pour about 5
cc of oil into the air inlet of the tool.
Before storing the tool or if the tool is to be idle for a period exceeding twenty-four hours, pour about 5 cc
of oil into the air inlet and operate the tool for 5 seconds to coat the internal parts with oil.
Air Supply and Connections
Always use clean, dry lubricated air. Dust, corrosive fumes and/or excessive moisture can ruin the motor
of an air tool. An air line filter can greatly increase the life of an air tool. The filter removes dust and
moisture.
Make sure all hoses and fittings are the correct size and are tightly secured.
Accessory Installation

Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting
any accessory on this tool or before performing any maintenance on this tool. Failure to do so could result
in injury.
1. Open retainer.
2. Insert drill rod into the hammer.
3. Close the retainer.
20 kg is the recommended amount of downforce to apply to the tool when working. The amount of
downforce is correct when the tool hits rhythmically, is comfortable to hold and works efficiently.
• Do not repair the tool at the work site. Always take the tool to a repair shop. Never drag the tool on the
ground. The air port and other openings will become clogged with dirt and debris.
• Compressed air is dangerous. When blowing the line clear of dirt, wear eye protection and keep the air
line directed toward a safe, clear area.
• Always blow out the air line before using to clear the line of dirt.
• Do not operate the tool unless the chisel is against the work since this will cause premature wear of parts
and reduce the vibration isolation properties of the tool.
SPECIFICATIONS
VK17B VK17C VKA17B VKA17
Weight kg 17 17 17 17
Length mm 625 625 645 645
Width mm 455 455 455 455
Max. Working Pressure bar 4-7 4-7 4-7 4-7
Air Consumption m3/min 2,4 2,4 2,4 2,4
Impact Rate 1/min 2040 2040 2040 2040
Chuck Size mm hex. 19x108 hex. 22x108 hex. 19x108 hex. 22x108
Vibration Level m/s2 15,8 15,8 6,1 6,1
Guarranteed Noise Level LWA 117 117 117 117
DISASSEMBLING THE VK 17 AND VKA 17 ROCK DRILL
GENERAL INSTRUCTIONS
• Clean the outer surface of the rock drill.
• Do not disassemble the rock drill any further than is necessary to replace or repair damaged or worn
parts.
• Whenever grasping the rock drill in a vice, always use leather or copper covered vice jaws to protect the
surface of the part and help to prevent distortion. Take extra care with threaded parts and housings.
• Do not remove any part that is a press fit in or on a subassembly unless the removal of the part is
necessary for repairs or replacement.
• Do not disassemble the rock drill unless a complete set of seals and o-rings is available for replacement.
DISASSEMBLY OF THE CYLINDER COVER
Support the rock drill on a suitable bench and remove side rod nuts (2).
!!!!! Do not grip the rock drill by its muffler in a vice as the muffler is aluminium and may be crushed.
Carefully slide off cylinder cover (3) complete with spring retainer (1).
!!!!! Take care when removing the fronthead as other parts may be released from their location and could
fall.
Should replacement of retainer spring (1) be required, grip the rock drill firmly in a vice equipped with
leather or copper covered vice jaws and use a suitable flat metal bar as a lever to disengage the spring
tang from its location in the side of the cylinder cover (3).

!!!!! There is considerable energy stored in the spring take care to wear eye protection and gloves. Guard
against sudden energy release during spring removal.
DISASSEMBLY OF DRILLING COMPONENTS:
Leave the side rod bolts (43) in position through the assembly at this stage. Remove drill bushing (4) slide
from location, note that the chuck may lie contained within the cylinder cover (3).
Inspect the tang (5) for signs of wear and replace if necessary. If worn the nut can be removed using tool
no. 1 included in maintenance kit, alternatively an old piston with a bar welded across may be used as a
wrench.
NOTE: the tang has a left hand thread.
Remove impact sleeve (6) which may be retained on the end of the piston (11 ) or within the muffler.
Pull on muffler (7) to release from O-ring (8) and cylinder (9).
NOTE: Hold cylinder (9) and cylinder head (27) together, to prevent unexpected disassembly of other
parts.
DISASSEMBLY OF MOTOR COMPONENTS
Withdraw side rod bolts (43). Remove handle body assembly (33) or (44) as an assembly from cylinder
head.
Carefully split cylinder head (27) from ratchet (17) and set cylinder head aside. Withdraw screw driving lug
(20), ratchet (17), washer (18) and blow tube (19) from distribution cover (16) and set aside. Take care to
prevent loss of pawls (21) pins (22) and springs (23) which are spring loaded and retained in position by
the ratchet plate.
Split apart distribution cover (16), distribution body (15) and distribution cover (13) and remove distribution
ring (14).
NOTE: Remember orientation of distribution body (15) to aid re-assembly.
Remove piston (11) and inspect or replace sealing washers (10) from cylinder (9).
Inspect tang nut (12) for wear. If worn the nut can be removed using tool no. 2 included in maintenance
kit, alternatively an old screw driving lug with a suitable bar welded across may be used as a wrench.
Unscrew the tang nut (12) from the piston (11).
NOTE: The tang nut (12) has a left hand thread.
DISASSEMBLY OF RATCHET MECHANISM
Carefully slide screw driving lug (20) complete with blow tube (19) from ratchet (17). Take care to retain
the pawls (21), pins (22) and springs (23).
DISASSEMBLY OF CYLINDER HEAD
Grip the cylinder head (27) in a vice and using a suitably sized drift remove the plastic closing pins (31).
Remove the cylinder head (27) from the vice and invert the part upside down above a wiper or other
suitable receptacle to catch the small ball bearings (30) that retain the throttle valve lever in place.
Encourage the 14 ball bearings on each side to drop out of their groove by operation of the throttle valve
lever (24) or supply elbow (29) depending on which is to be removed. Once all balls have been removed,
the throttle lever (24) or the supply elbow may be slid out of the cylinder head (27).
Take care to retain thearresting pin (26) and its spring (25). Remove the supply elbow sealing ring (28).
DISASSEMBLY OF HANDLE ASSEMBLY VKA17 (VIBRATION DAMPED HANDLE)
Grip the handle body (33) in leather or copper protected vice jaws. Press or drift out handle pivot pin (34)
using a suitably sized drift.
Remove both handle levers (39) from the slot in the handle body.
Tap out sleeve (42) to split the handle levers apart from each other Remove the handle springs (36).
If it is necessary to remove the trip dog (35) use a punch of suitable size (15 - 19mm) and drift out the trip
dog from the cylinder side of the handle body (33).
NOTE: Removal of trip dog (35) will destroy the retaining lip of the stop and a new one should be fitted on
re-assembly.
Remove the handle grips (39). It may prove easier to cut off the old grips with a sharp knife.
DISASSEMBLY OF HANDLE ASSEMBLY VK17 (STANDARD HANDLE)

Grip the handle body (44) in leather or copper protected vice jaws. Remove nut (49) and washer (48) from
handle screw end. Press or drift out handle screw (47) using a suitably sized drift.
Spacer pipes (45) will be retained inside the handle grips (46). If it is necessary to replace handgrip (46) it
may prove easier to cut off the old grips with a sharp knife.

ASSEMBLY OF THE VK 17 AND VKA 17 ROCK DRILL
GENERAL INSTRUCTIONS
• Before assembly of the rock drill, clean all parts thoroughly dry off and inspect carefully for signs of wear.
• Lubricate all moving parts with recommended oil (see Lubrication).
• Apply a thin film of O-ring lubricant to all O-rings before final assembly.
ASSEMBLY OF THE HANDLE ASSEMBLY VKA17 (VIBRATION DAMPED HANDLE)
If the trip dog (35) was removed during disassembly it should now be replaced. Use a new part, as the
retaining feature of the trip dog is severed on removal. Locate the trip dog in position and tap sharply
home using a soft drift and hammer.
If the hand grip rubbers (39) were removed these should now be replaced. Lubricate the inside of the
hand grip rubber (39) with soapy water and slide the new grips into position on the handle levers.
Grip handle body (33) in leather or copper covered vice jaws. Position the handle levers (37) together.
Lubricate and replace the sleeve (42) to loosely retain handles together. Locate both handle springs (36)
in position inside the handle body slot.
Slide the handle levers and sleeve assembly into position in the slot of the handle body (33) fix the
assembly in place by drifting or pressing in handle pin (34).
ASSEMBLY OF HANDLE ASSEMBLY VK17 (STANDARD HANDLE)
Grip handle body (44) in leather or copper covered vice jaws.
If the hand grip rubbers (46) were removed these should now be replaced. Lubricate the inside of the
rubber grip with soapy water and slide the new grips into position on the spacer pipes (45).
Thread a spacer pipe (45) complete with handgrip rubber (46) over handle screw (47). Thread handle bar
into handle body (44).
Assemble remaining spacer pipe (45) complete with handgrip rubber (46) over handle screw and secure
with washer (48) and nut (49).
ASSEMBLY OF CYLINDER HEAD
Grip cylinder head (27) in leather or copper covered vice jaws.
Lubricate and replace the throttle spring (25) and arresting pin (26) in position in the throttle lever (24).
Locate the throttle lever (24) in position in the cylinder head (27). Should the throttle lever (24) be
replaced, the new part should be lapped in using grinding paste, to its mating tapered hole in the cylinder
head (27).
Lapping is complete when a continuous band is visible around the taper sides of the throttle lever and the
cylinder head hole.
Clean the assembly of all traces of grinding paste thoroughly before further assembly.
Clean, lubricate and replace the 14 ball bearings (30) and using a suitable size drift, tap home the plastic
pin (31) to secure the assembly.
Check the throttle valve (24) is free to rotate. Renew and lubricate the inlet O-ring seal (28) in the groove
on the supply elbow (29). Locate the supply elbow (29) in position in the cylinder head (27). Clean,
lubricate and replace the 14 ball bearings (30) and using a suitable size drift, tap home the plastic closing
pin (31) to secure the assembly. Check the supply elbow (29) is free to rotate.
Replace the quick coupling (32) using “Loctite 2701” thread sealing liquid, if the quick coupling was
removed.
ASSEMBLY OF MOTOR COMPONENTS
Clean the screw driving lug (20) and rotation pawls (21) thoroughly and inspect the ends of the pawls for
wear. If wear is evident the pawls can be removed and turned around in their slots to provide a second
period of life. If the both edges of the pawls (21) are worn they should be replaced as a set along with new
springs (23) and pins (22).
Inspect the screw driving lug (20) for signs of excessive wear of the splines. Lubricate and reassemble the
pawl springs (23) pawl pins (22) and pawls (21) with the screw driving lug (20).
Replace the blow tube (19) and seal (18). Use tool no.3 in the maintenance kit or manufacture a blow tube
tool as per the drawing in this manual, to prevent bending of the blow tube upon assembly.
Thread the screw driving lug assembly (20) through ratchet (17) and engage the pawls.

NOTE: only one pawl is engaged with the ratchet plate at any time.
Thread distribution cover (16) over screw driving lug (20) until it butts up to ratchet (17). Slide distribution
body (15) into position and locate on distribution cover (16). Replace distribution ring (14) and distribution
cover (13). Check for free rotation of screw driving lug and listen for distribution ring movement when the
assembly is shaken.
Replace the tang nut (12) in the piston (11) and tighten fully by hand using the screw driving lug. Note the
tang nut has a left hand thread.
Lubricate the splines of the screw driving lug (20) and engage with the mating splines of the tang nut (12)
contained in the piston (11).
Lubricate and assemble the cylinder (9) by sliding over the piston then replace impact sleeve (6).
Renew O-ring (8) and slide muffler (7) into position. Thread side bolts (43) through the assembly to retain
the components in position.
ASSEMBLY OF THE CYLINDER COVER
Grip the cylinder cover (3) in leather or copper covered vice jaws and locate one end of the retaining
spring (1) in position. Use a flat bar as a lever to stretch the spring until the other end can be located in
position.
CAUTION: There is considerable energy stored in the spring take care to wear eye protection and gloves.
Guard against sudden energy release.
Replace tang (5) in the drill bushing (4) Note the left-hand thread.
Lubricate chuck (4) and slide into cylinder cover (3) check the drill bushing is free to rotate.
Locate the splines of the tang (5) with those of the piston (11) and slide the fronthead complete with drill
bushing into position. Locate the two-side bolts (43) through the flange of the cylinder cover. Replace the
two side rod nuts (2) and tighten evenly to a torque of 40 Nm (30 -ft.lbs).
Following service the rock drill should be checked for correct operation prior to being released back to the
job site.
Fit the correct accessory into the rock drill and connect to an airline.
CAUTION: The throttle should be moved to the off position (90 degrees to axis of the hammer).
Use low-pressure air initially to verify the rock drill is free from leaks around the inlet connection and the
tool runs and rotates.
Increase the air pressure to 6 bar and operate the tool in short burst to check the tool starts and stops
cleanly without hesitation
Operating frequency should be 2040 blows per minute (34 Hz) with 170 revs per minute of chisel rotation.
The air consumption should be 2.4 m3/min @ 6 bar.

Tool No. 1
Tool No. 2
Tool No. 3

PARTS LIST VK17 AND VKA17
REF. PART NO. PART NAME QTY.
9403380 ROCK DRILL VKA17C 22X108
9403390 ROCK DRILL VKA17B 19X108
9403400 ROCK DRILL VK17C 22X108
9403410 ROCK DRILL VK17B 19X108
1 4760151 4760151 4760151 4760151 SPRING RETAINER 1
2 0600250 0600250 0600250 0600250 NUT 2
3 5132250 5132250 5132250 5132250 FRONTHEAD 1
4 2089920 2089920 DRILL BUSHING #22X108 1
4 2089900 2089900 DRILL BUSHING #19X108 1
5 0441050 0441050 0441050 0441050 TANG 1
6 2261280 2261280 2261280 2261280 IMPACT SLEEVE 1
7 5230150 5230150 5230150 5230150 DAMPER 1
8 273102 273102 273102 273102 O-RING 100X3 1
9 5091930 5091930 5091930 5091930 CYLINDER 1
10 273161 273161 273161 273161 SEALING 2
11 5002362 5002362 5002362 5002362 PISTON 1
12 2068440 2068440 2068440 2068440 TANG NUT 1
13 3925430 3925430 3925430 3925430 DISTRIBUTION COVER 1
14 3902180 3902180 3902180 3902180 DISTRIBUTION RING 1
15 3924410 3924410 3924410 3924410 DISTRIBUTION BODY 1
16 3925420 3925420 3925420 3925420 DISTRIBUTION COVER 1
17 3782240 3782240 3782240 3782240 RATCHET 1
18 0911690 0911690 0911690 0911690 WASHER 1
19 4325210 4325210 4325210 4325210 PIPE 1
20 5151550 5151550 5151550 5151550 SCREW DRIVING LUG 1
21 3792190 3792190 3792190 3792190 PAWL 4
22 3043170 3043170 3043170 3043170 PIN 4
23 315017 315017 315017 315017 SPRING 4
24 4017181 4017181 4017181 4017181 THROTTLE LEVER 1
25 4501110 4501110 4501110 4501110 SPRING 1
26 3071060 3071060 3071060 3071060 ARRESTING PIN 1
27 5255370 5255370 5255370 5255370 CYLINDERHEAD 1
28 273030 273030 273030 273030 O-RING 33X25 1
29 4424410 4424410 4424410 4424410 SUPPLY ELBOW 3/4" 1
30 324393 324393 324393 324393 BALL 3/16" 28
31 321019 321019 321019 321019 PIN 6X27 2
32 414259 414259 414259 414259 QUICK COUPLING 3/4" 1
61 8017170 8017170 HANDLE ASSY. VIBRATION DAMPED 1
33 1227111 1227111 HANDLE HOLDER 1
34 311398 311398 PIN 1
35 0901890 0901890 TRIP DOG 1
36 315145 315145 SPRING 2
37 1418370 1418370 HANDLE LEVER 2
39 1318170 1318170 HANDLE 2
42 2001580 2001580 SLEEVE 1
62 8017200 8017200 HANDLE ASSY FIXED 1
44 1227070 1227070 HANDLE HOLDER 1
45 4301990 4301990 PIPE 2
46 1318150 1318150 HANDLE 2
47 0562750 0562750 SCREW 1
48 311133 311133 WASHER 1
49 311037 311037 NUT M16 1

REF. PART NO. PART NAME QTY.
9403380 ROCK DRILL VKA17C 22X108
9403390 ROCK DRILL VKA17B 19X108
9403400 ROCK DRILL VK17C 22X108
9403410 ROCK DRILL VK17B 19X108
43 0562440 0562440 TIGHTENING SCREW 2
E240030 E240030 E240030 E240030 MAINTENANCE KIT
E240034 E240034 E240034 E240034 TOOL NO.1 - DRILL BUSHING NUT
WRENCH
E240033 E240033 E240033 E240033 TOOL NO.2 - TANG NUT WRENCH
E240032 E240032 E240032 E240032 TOOL NO.3 - BLOW TUBE ASSY. TOOL