Kamasa-TOOLS K 9901 User manual

K 9901
Pneumatic
impact
wrench

2
This tool is designed for tightening and loosening of threaded fasteners
within the range as specified by the manufacturer. It should only be used
in conjunction with suitable impact type 1/2” square driver nut running
sockets. Only use sockets which are of the impact type.
SAFETY AND PRECAUTION
1 Always use impact resistant eye protection when operating a pneumatic tool.
2 Only use impact sockets together with a pneumatic impact wrench.
3 Always be aware that hearing protection is recommended at sound levels above
85 dBA, 2003/10/EG.
4 Never use a bigger tool then necessary for the job, a more powerful tool tends to vibrate
more.
5 Vibration, repetitive motions or uncomfortable positions may be harmful to your hands
or arms. Stop using any tool if discomfort, tingling feeling or pain occurs, seek medical
advice before resuming use.
6 Keep unqualified persons, children, etc. away from the tool.
7 Never use oxygen and combustible gas as an air supply for the tool which many be
ignited by spark and cause fire or explosion.
8 This power tool is not intended for use in potentially explosive atmospheres and is not
insulated against coming into contact with electric power.
9 Never use gasoline or other flammable liquids to clean the tool.
10 Do not expose air tools to rain. Do not use air tools in damp or wet locations.
11 When not in use, keep tools in a dry place, either locked up or in a high place,
out of the reach of children.
12 Only qualified and trained operators should install, adjust or use power tools.

3
13 Do not modify this power tool. Modifications can reduce the eectiveness
of safety measures and increase the risks to the operator.
14 Do not use the tool if it has been damaged.
15 Failure of a work piece, accessories or even of the power tool itself can generate
high-velocity projectiles.
16 Use only impact-wrench-rated sockets in good condition, as poor condition or hand
sockets and accessories used with impact wrenches can shatter and become a projectile.
17 Entanglement hazards can result in choking, scalping and/or lacerations if loose clothing,
bracelets, neckwear, hair or gloves are not kept away from the tool and accessories.
18 Never hold the drive, socket or drive extension.
19 Do not use in confined spaces and beware of crushing hands between tool
and work piece, especially when unscrewing.
20 Do not touch sockets or accessories during impacting, as this increases the risk of
cuts, burns or vibration injuries.
21 Always shut of air supply, drain hose of air pressure and disconnect tool from air supply
when not in use, before changing accessories or when making repairs.
22 Do not exceed the maximum air pressure, see Specifications in this manual
23 Never carry an air tool by the hose.
24 Preferably shut o the air supply before changing socket or at least ensure
that the hands are well clear of the operating trigger.

4
PRODUCT SPECIFICATIONS
Model No. K 9901
Revolutions 8300 rpm
Max.torque 1356 Nm
Air connection 1/4” NPT
Air consumption 150 l/m
Max. air pressure: 6,3 bar
Sound level 99,7 dBA
Length 150 mm
Weight 1600 g
MAJOR COMPONENTS
Twin hammer impact mechanism
Forward/reverse knob
Torque adjustment
Trigger Composite chassie
Air inlet

5
MAINTENANCE
1 If the tool is used every day, disassemble and inspection is recommended every 6 months.
2 Dry the filter and the air inlet of the tool.
3 Lubricate the quick connect coupling to prevent blocking.
4 Air tools require lubrication throughout the life of the tool. Since the compressed air
driving the motor contains water, the tool must be lubricated daily. We also recommend
water separator in the air supplying system.
5 Use Molybdenum Disulfide (MoS2) grease for all gearboxes and impact mechanisms.
6 Avoid storing the tool in a location subject to high humidity. If the tool is left as it is used,
the residual moisture inside the tool can cause rust. Before storage, lubricate tool and run
it for a few seconds.
7 Perform regular inspection of spindles, threads, and clamping devices in respect of wear
and tolerances.
8 If the tool is too seriously damaged to be used anymore, recycle raw material instead of
disposing as waste. The machine, accessories and packaging should be sorted for environ-
mental-friendly recycling. Check with your local authority or retailer for recycling advice.
9 Tools repair and maintenance should be carried out by an authorized service center.

6
PARTS K 9901

7
No PARTS NO. DESCRIPTION Q'TY
1 Oil Seal 1
2 Hammer Case 1
3 Bushing 1
4 KR 9901-1 Anvil Collar 1
5 KR 9901-2 O-Ring 1
6 KR 9901-3 Anvil (1/2" DR) 1
7 Hammer Pin 2
8 Hammer Cage 1
9 Hammer Dog 2
10 Washer 1
11 KR 9901-4 Front Gasket 1
12 Motor Housing 1
13 O-Ring 1
14 KR 9901-5 Ball Bearing 1
15 Front Plate 1
16 Spring Pin 1
17 Cylinder 1
18 Spring Pin 1
19 Rotor 1
20 KR 9901-6 Rotor Blade 8
21 Rear Plate 1
22 Ball Bearing 1
23 Screw 1
No PARTS NO. DESCRIPTION Q'TY
24 Reverse Valve 1
25 O-Ring 1
26 O-Ring 1
27 KR 9901-7 Rear Gasket 1
28 Rear Cover 1
29 Reverse Lever 1
30 KR 9901-8 Spring 1
31 KR 9901-9 Steel Ball 1
32 Screw 4
33 Trigger 1
34 O-Ring 1
35 Retainer 1
36 Valve Stem 1
37 KR 9901-10 Spring 1
38 KR 9901-11 Exhaust Deflector 1
39 O-Ring 1
40 Washer 1
41 Hose Adaptor -18NPT 1
41 Hose Adaptor -19PT
41 Hose Adaptor -19PF(BSP)
42 Front Plate Washer 1
43 Rear Plate Washer 1
PARTS LIST K 9901

www.kamasatools.com
K 9901