Sioux-tools IW38HAP-7Q User Manual download pdf (Page 3)

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Declaration of Conformity

Sioux Tools Inc.

250 Snap-on Drive, P.O. Box 1596, Murphy, NC 28906, U.S.A.

declare under our sole responsibility that the product

Model IW38HAP-3P/IW38HAP-3F/IW38HAP-4P/IW38HAP-4F/IW38HAP-7Q

Impact Wrenches, Serial Number

to which this declaration relates is in conformity with the following standard(s) or other normative document(s)

EN792 (Draft), EN292 Parts 1 & 2, ISO 8662 Parts 1 & 7, Pneurop PN8NTC1

following the provisions of 89/392/EEC as amended by 91/368/EEC & 93/44/EEC Directives

Mark Pezzoni (President, Power and Specialty Tools)

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Name and signature or equivalent marking of authorized person

Printed in Japan

Dismantling & Assembly Instructions

Disconnect tool from air supply.

Remove oil plug (35) and position tool so that the oil in the clutch

housing can be drained into a suitable container. Grip motor

housing (1) in a vise fitted with soft jaws and remove 4 screws (37)

from clutch housing (36) or (53) with O-ring (34) and oil seal (38)

or (54). Oil seal (38) or (54) may be pressed out of clutch housing

(36) or (53) if replacement is needed. Remove anvil spacer (31)

noting that on reassembly, the chamfered side of spacer goes

toward the hammer cage (26). Gripping hammer cage (26), pull

out complete twin hammer mechanism. Pull out anvil (42) or (59)

or (50), noting the orientation of twin hammers (25) for reassem-

bly. Remove thrust button (28) and compression fitting (29). Push

out hammer pins (27) from hammer cage (26) allowing twin

hammers (25) to be released.

For IW38HAP-3P/IW38HAP-3F: Lock collar (43), spring (44) and

lock fitting (45) may be pried off anvil (42) if replacement is needed.

For IW38HAP-4P/IW38HAP-4F: Spring (60), lock fitting (61) and

lock collar (62) may be pried off anvil (59) if replacement is needed.

For IW38HAP-7Q: Stop spring (58), pit washer (57), spring (56),

pit sleeve (55) and steel ball (51) may be pried off anvil (50) if

replacement is needed.

Soak rusted nuts in penetrating oil and break rust seal before

removing with impact wrench. If nut does not start to move in three to

five seconds use a larger size impact wrench. Do not use impact

wrench beyond rated capacity as this will drastically reduce tool life.

NOTE: Actual torque on a fastener is directly related to joint

hardness, tool speed, condition of socket and the time the tool is

allowed to impact.

Use the simplest possible tool-to-socket hook up. Every connection

absorbs energy and reduces power.

Forward/reverse operation is controlled by reverse valve unit (10)

located just above trigger (7). Depress reverse valve (10) until a

distinct click is heard and the valve remains depressed. The tool is

now in reverse mode. Fully depress valve again and the reverse valve

unit (10) will release allowing forward operation. Ensure that the

reverse valve unit is in the proper position before starting tool.

The air regulator controls the speed of the tool and is located on the

lower portion of end cap (22). It is a 3-position, thumb operated

regulator with “3” being the highest setting and “1” the lowest setting.

Using thumb, move the slide downwards to increase speed and up-

wards to decrease speed.

The tool incorporates an air strainer in hose adaptor (6). Check

periodically to see if this is becoming blocked as blockage will

reduce the speed and power of the tool. To clean the air strainer it is

necessary to remove the hose adaptor (6) from motor housing (1).

For best results:

1) Always use the correct size impact type socket.

2) Use extra deep sockets in place of extension bars where

possible.

3) Do not use oversized, worn or cracked sockets.

4) Hold the wrench so the socket fits squarely on the fastener. Hold

the wrench firmly, but not too tightly, pressing forward slightly.

Operation Specification

Air Consumption

Max. Torque Reverse

Max.Torque Forward

Working Torque

Air Inlet Thread

Overall Length:

IW38HAP-3P/3F

IW38HAP-4P/4F

IW38HAP-7Q

3.3 cfm (24 scfm)

250 ft.lbs. (339 Nm)

230 ft.lbs. (312 Nm)

60-200 ft.lbs. (81-271 Nm)

1/4-18NPT

6.6" (168 mm)

6.7" (171 mm)

7.3" (186 mm)

at 90 PSIG/6.2 bar

Remove 4 screws (23, 24) from end cap unit (22) noting the longer

screws (24) will be returned to the bottom two holes during

reassembly. Carefully pry off end cap (22) complete with air

regulator and gasket (21). Do not remove air regulator from end

cap unit (22). Pull out reverse valve unit (10) from motor housing

(1). Remove drive motor assembly and support rod (40) from

motor housing (1). Remove guide pin (19) from rear plate (18)

allowing rear plate (18) to be removed from front plate (14). Ball

bearing (11) may be removed from rear plate (18). Remove 6 rotor

blades (16) from rotor (17). Ball bearing (11), oil seal (12) and

O-ring (13) may be removed from front of cylinder (15). Using a

suitable punch, tap out spring pin (9) and remove throttle trigger

(7). Unscrew hose adaptor (6) and remove exhaust deflector (5),

throttle spring (4), valve stem (3) and muffler (64). Do not

attempt to remove grip from motor housing (1).

Reassembly

Place front gasket (41) on the motor housing assembly and put

O-ring (34) into the grove of the housing. Never place the front

gasket upside down. Insert 4 support rods (40) into the corner slots

of the motor housing assembly provided for the torx screws.

Clean all parts and examine for damage and wear. Particularly

examine O-rings and oil seals for cuts and wear. Also carefully

check for cracks and wear on hammer pins (27), twin hammers

(25), hammer cage (26) and anvil (42) or (59) or (50), particularly

in the area of the square drive. Replace all parts where necessary

with manufacturer supplied parts. Lightly coat all parts with a

suitable pneumatic tool lubricating oil and assemble in the reverse

order. Apply Locktite 271 to thread on hose adaptor (6) before

assembly. On completing assembly, remove oil plug (35) and pour

into the front end 5/8 fl. oz. (15cc) of a standard SAE20 grade oil

and replace oil plug (35). For

IW38HAP-7Q: Put steel ball (51) into

anvil (50), put pit spring (56) pit washer (57) and secure with stop

ring (58). Pour in approx. 5 ml of a good quality lubricating oil, one

preferably containing a rust inhibitor, into the hose adaptor (6) with

the trigger (7) depressed. Connect to a suitable air supply and run

the tool for a few seconds to allow the oil to circulate. Check the

function of the trigger (7), reverse valve (10) and regulator and

reset for operation required. Refer to section Operating.

1 2 3 4 5 6 7 8 ... 20 21

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Sioux-tools IW38HAP-7Q User Manual Page 3

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