HAKKO 951, 952 Instruction Manual

®

Instruction Manual

Thank you for purchasing the Hakko 951/952 soldering gun.

This soldering gun has a built-in feeding mechanism that enables soldering with one hand.

Please read this manual before operating the Hakko 951/952.

Keep this manual readily accessible for reference.

CAUTION

When using this unit for the first time, be sure to calibrate the tip temperature. Specific

information can be found in the instruction manual for your particular Hakko station.

When inserting solder, be sure to push up the trigger and insert the solder until the end of

the solder protrudes from the guide nozzle.

Packing List

Soldering gun

Applicable Models

In order to function, the Hakko 951/952 must be connected to one of
the following Hakko stations: Hakko 700, 701, 702, 702B, 926, 927,
928, 936, 937.

Specifications

Name

Power consumption

Temperature range

Tip to ground
resistance

Tip to ground potential

Heating Element

Standard tip

Standard guide nozzle
(Solder diameter)

Usable solder diameter

Cord assembly

Total length (w/o cord)
H W D

Weight (w/o cord)

*Specifications and design are subject to change without notice.

Hakko 951

AC 24 V 50 W

200 C–480 C/392 F–896 F

Under 2

Under 2 mV(TYP. 0.6 mV)

Ceramic heater

Shape-3C
Pre-tinned surface 55
(No.900M-T-S10)

ø1.0 mm (0.039 in.)

ø0.6, 0.8, 1.0, 1.2 1.6 mm

(ø0.024, 0.031, 0.039, 0.047, 0.063 in.)

1.1 m (3.6 ft.)

180 170 23 mm (7.1 6.7 0.9 in.)

177 g (0.39 lbs.)

Hakko 952

Shape-B
(No.900L-T-B)

187 g (0.41 lbs.)

Precautions

WARNING

Warnings and cautions are placed at critical points in this manual
to direct the operator’s attention to significant items. They are
defined as follows:

WARNING: Failure to comply with a WARNING may result in serious

injury or death.

CAUTION: Failure to comply with a CAUTION may result in injury

to the operator, or damage to the items involved. Two
examples are given below.

CAUTION

When power is ON, tip temperatures will be between 200 C and
480 C. (392 F to 896 F.) To avoid injury or damage to personnel
and items in the work area, observe the following:

Do not touch the tip or the metal parts near the tip.
Do not allow the tip to come close to, or touch, flammable materials.
Inform others in the area that the unit is hot and should not be

touched.

Turn the power off when not in use, or left unattended.
Turn the power off and allow the unit to cool to room temperature

when changing parts or storing the Hakko 951/952.

CAUTION

To prevent accidents or damage to the Hakko 951/952, be sure to
observe the following:
Do not use the unit for applications other than those specifically

described in the instruction manual.

Before using the Hakko 951/952 for the first time, calibrate the tip

temperature.

Do not strike the gun against hard objects to remove excess solder.

This will damage the gun.

Do not modify the Hakko 951/952.
Use only genuine Hakko replacement parts.
Do not allow the Hakko 951/952 to become wet, or use it when hands

are wet.

Be sure the work area is well ventilated. Soldering produces smoke.
Remove power and gun cords by holding the plug –

1

not the wires.

Part Name

Adjusting screw

Tip

Troubleshooting guide

For details, refer to the instruction manual for the station with which the
unit will be used.

The solder clogs.

Solder inlet

Guide nozzle

Cord assembly

Support fitting

Trigger

Solder feed
adjusting screw

Plug

Operation

Inserting the solder

Push and hold the trigger upward in the direction of the arrow and
pass solder through the solder inlet until it protrudes from the guide
nozzle.

CAUTION

The solder may become stuck inside the unit if the trigger is pulled before the
solder protrudes from the guide nozzle.

Feeding the solder

Return the trigger to its original position after inserting the solder.
Solder can now be fed by pulling the trigger.

CAUTION

Keep the solder loose (without tension) on the solder inlet side at all times while
soldering.

Adjusting the guide nozzle

Adjust the position where the solder touches the tip by loosening the
adjusting screw and moving the guide nozzle up or down.

Solder feed adjustment

Adjust the solder feed pitch by turning the solder feed adjusting screw
with a screwdriver.
The feed pitch decreases as the screw is tightened.
(Range: minimum of 2 mm (0.079 inch) to maximum of 8 mm
(0.315 inch))

Changing to a different solder diameter

To change to a different diameter of solder, push and hold the trigger
upward in the direction of the arrow and pull the current solder out of
the unit via the solder inlet. Then insert the new solder as described
under “Inserting solder” above.

Connections

1. Make sure the station power switch is OFF and connect the plug to
the receptacle of the station.

2. Place the Hakko 951 or 952 on the iron holder (optional).

3. Plug the power cord into a grounded wall socket.
Be sure the unit is grounded.

Calibration

Be sure to calibrate the tip temperature before using it. (Refer to the
instruction manual for the station.)

* Use a Hakko 191 Thermometer or a Hakko 192 Soldering Tester to measure

the tip temperature.

ACTION

: Do not pull solder from a heavy reel with the trigger. Keep the

solder loose (without tension) on the solder inlet side at all
times while soldering.

ACTION

: Refer to “Inserting the solder” under “Operation.”

Checking for breakage of the heating

element and cord assembly

Disconnect the plug and measure the resistance between the
connecting plug pins as follows.

3

24

5

1

If the values of ‘a’ and ‘b’ are outside the above value, replace the heating
element (sensor) and /or cord assembly.
If the value ‘c’ is over the above value, remove the oxidization film by
lightly rubbing with sand-paper or steel wool the points shown below.

Broken heating element

Disassembling the 951/952

1. Remove the adjusting screw and keep the support fitting apart
from the housing.

2. Turn the nut counterclockwise and remove the tip enclosure ,
the tip .

CAUTION

Be sure to remove the nut before removing the nipple. Removing the nipple
first could cause the heater leads to twist and cause a short circuit.

3. Turn the nipple counterclockwise and remove it from the gun.

4. Remove the 4 screw securing the housing and open the housing.

5. Pull the grounding spring out of the sleeve.

a. Between pins 4 & 5

(Heating element)

b. Between pins 1 & 2

(Sensor)

c. Between pin 3 & tip

Rub lightly

2.5 – 3.5 (Normal)

43 – 58 (Normal)

under 2

Grounding
spring

5

4

Nipple

3

Tip

2

Tip enclosure

1

Nut

2

* Measure when the heating element is at room temperature.

Broken soldering gun cord

There are two methods of testing the soldering gun cord.

CAUTION

The LED heater lamp will flicker even with a normal gun cord if the temperature
reaches 480 C (896 F).

Resistance value

Resistance value

of heating element

of sensor

Resistance value of heating
element (RED)

Resistance value of sensor
(BLUE)

2.5 – 3.5

43 – 58

If the resistance value is not normal, replace the heating
element.
(Refer to the instructions included with the replacement part.)
After replacing the heating element,

1. Measure the resistance value between pins 4 & 1 and 4 & 2, and
pins 5 & 1 and 5 & 2. If the resistance value is not infinite for all four
measurements, the heating element and sensor leads are
touching. This will damage the P.W.B. When reassembling, be
sure that the heating element and sensor leads do not touch.

2. Measure the resistance value ‘a’ ‘b’ ‘c’ to confirm that the leads are
not twisted and that the grounding spring is properly connected.

CAUTION

When reassembling, match the
convex part of the hexagon nut to
concave part of the housing.

Hexagon nut M4

Parts list (Tips)

The tip temperature will vary according to the shape of the tip. The preferred
method of adjustment uses a tip thermometer. (Refer to the instruction manual
for the station.) A less accurate method involves adjusting the temperature
settings according to the adjustment value for each tips.

951

900M-T-1.6D

(0.06)

ø1.6

(0.1)

3

ø2.4

ø3.2

2

ø

R0.5(0.02)

R0.5(0.02)

R1(0.04)

ø2.4

17(0.66)

(0.2)

5

17(0.66)

(0.25)

6.5
17(0.66)

R0.2(0.008)

14(0.55)

17(0.66)

20(0.79)

20(0.79)

5(0.2)
20(0.79)

900M-T-2.4D

900M-T-3.2D

900M-T-SB

900M-T-B/900M-T-BF2*

952

900L-T-B

900L-T-2B

900L-T-2.4D

0.5(0.02)

(0.09)

0.5(0.02)

(0.12)

0.5(0.02)

(0.08)

*BF2 is tinned a distance of 2mm (0.08 in.) from the end of the tip.

• For heavy duty soldering Hakko recommends the 952 gun with heavier tips.

(0.09)

0.5(0.02)

CAUTION

Use only genuine replacement tips for Hakko 951,952. The tips for Hakko Dash are not available to use. These tips are tinned flat only.

0 C

0 C

0 C

0 C

0 C

0 C

0 C

0 C

900M-T-0.8C

900M-T-2C/900M-T-2CF*

900M-T-3C/900M-T-3CF*

900M-T-4C/900M-T-4CF*

900M-T-K

2(0.08)

900L-T-3.2D

(0.12)

0.5(0.02)

900L-T-2C/900L-T-2CF*

900L-T-3C/900L-T-3CF*

(0.031)

(0.08)

(0.1)

(0.16)

(0.2)

ø3.2

(0.08)

ø2

(0.1)

ø3

ø0.8

45

ø2

45

ø3

45

ø4

45

ø5

45

8(0.32)

45

20(0.79)

45

20(0.79)

1. Turn the unit on and set the temperature to 480 C (896 F). Then
wiggle and kink the gun cord at various locations along its length,
including strain relief area. If the LED heater lamp flickers, then the
cord needs to be replaced.

2. Check the resistance value between the pin of the plug and the
wire on the terminal.
Pin 1: Red Pin 2: Blue Pin 3: Green Pin 4: White Pin 5: Black
The value should be 0 .
If it is greater than 0 or is infinite, the cord should be replaced.

Examples: When using a 900M-T-0.8C tip at 400 C (750 F), the

17(0.66)

17(0.66)

17(0.66)

17(0.66)

15(0.6)

20(0.79)

difference between this tip and standard tip is –10 C (–18 F).
Set the temperature to 410 C (768 F).
Refer to the chart for the correct adjustment values.

951 tip out diam. ø6.5mm

-10 C/-18 F

0 C

0 C

900M-T-S4

900M-T-S10*

900M-T-S11*

(0.08)

(0.1)

(0.16)

R0.25(0.01)

ø2

ø3

ø4

55

55

15(0.6)

17(0.66)

17(0.66)

0 C

+30 C/+54 F

952 tip out diam. ø8.5mm

0 C

-20 C/-36 F

0 C

900L-T-4C/900L-T-4CF*

900L-T-5C/900L-T-5CF*

900L-T-K

2(0.08)

(0.16)

(0.2)

(0.2)

ø4

45

20(0.79)

ø5

45

15(0.6)

ø5

45

18(0.71)

0 C

0 C

0 C

0 C

0 C

+20 C/+36 F

3

Parts list

Note: Spare or repair parts do not include mounting screws, if they are not

listed on the description. Screws must be ordered separately.

1

2

3

9

10

11

12

Item No.

Part No.

B2644

1

B2643

2

B2032

3

A1321

4

B2022

5

B2033
6
7

–
B1786
B1787
B1784

8

B1794
B2648

9

B2646

10

B2645

11

B2658

12

B2657

13

B1100

14

B2647

15

B2659

16

B1710

17

B2652

18

B2653
B2654

4

B2655
B2656
B2649

19

B2650

20

Part Name

Housing

Terminal board
Grounding spring
Heating element
Nipple
Nipple
Soldering tip
Tip enclosure
Tip enclosure
Nut
Nut
Trigger set
Solder feed adjusting screw

guide
Solder feed adjusting screw
Spring for trigger asse’y
Solder inlet
Cord bushing
Cord asse'y
Guide pipe
Nozzle securing ring
Guide nozzle / 0.6mm ESD
Guide nozzle / 0.8mm ESD
Guide nozzle / 1.0mm ESD
Guide nozzle / 1.2mm ESD
Guide nozzle / 1.6mm ESD
Support fitting
Adjusting screw

Description

With screws, labels

For 951
For 952
See page 3
For 951
For 952
For 951
For 952

With nut

With grommet
For guide pipe

13

15

14

16

Hexagon nut

M4

17

5

6

7

8

19

20

18

Option

Part No.

C1437
A1042

Iron holder

Part Name

Cleaning sponge

Description

®

OVERSEAS AFFILIATES

U.S.A.: AMERICAN HAKKO PRODUCTS, INC.

25072 ANZA DR. SANTA CLARITA, CA 91355, U.S.A.
TEL: [phone] FAX: [phone]
Toll Free (800)88-HAKKO

4 2 5 5 6

http://www.hakkousa.com

HONG KONG: HAKKO DEVELOPMENT CO., LTD.

ROOM 1504, EASTERN HARBOUR CENTRE,
28 HOI CHAK STREET, QUARRY BAY, HONG KONG.
TEL: [phone] FAX: [phone]
http://www.hakko.com.hk/

CHINA: HAKKO DEVELOPMENT CO., LTD.

ROOM 1112-1115, 11 FLOOR, INTERNATIONAL BANK
TOWER 191 DONGFENG ROAD WEST, GUANGZHOU
510180, CHINA.
TEL: [phone] FAX: [phone]

HEAD OFFICE

4-5, SHIOKUSA 2-CHOME, NANIWA-KU, OSAKA, 556-0024 JAPAN
TEL:[phone] FAX:[phone]
http://www.hakko

TAIWAN: HAKKO DEVELOPMENT CO., LTD.

3F., NO 110, CHUNG HSIN RD., SEC.3, SANCHUNG, TAIPEI
HSIEN, TAIWAN.
TEL: [phone] FAX: [phone]

S'PORE: HAKKO PRODUCTS PTE., LTD.

1, GENTING LINK #02-04, PERFECT INDUSTRIAL
BUILDING, SINGAPORE 349518
TEL: [phone] FAX: [phone]
E-mail: [e-mail]

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MALAYSIA HEAD OFFICE

NO.22,JALAN PEMBERITA U1/49,SEKSYEN U1,
TEMASYA INDUSTRIAL PARK,40150 GLENMARIE,
SHAH ALAM,SELANGOR DARUL EHSAN,WEST MALAYSIA.
TEL: [phone] FAX: [phone]
E-mail:[e-mail]

PENANG BRANCH: TEL: [phone] FAX: [phone]
JOHORE BAHRU BRANCH: TEL: [phone] FAX: [phone]

.com

PHILIPPINES: HAKKO PHILS TRADING CO., INC.

NO. 415 WINDSOR TOWER CONDOMINIUM,
163 LEGASPI ST., LEGASPI VILLAGE MAKATI,
METRO MANILA, PHILIPPINES
TEL: [phone] FAX: [phone]
E-mail: [e-mail]

INDONESIA: P.T. HAKKO PRODUCTSTAMA INDONESIA

COMP BUMI INDAH BLOK IV NO. 40 NAGOYA BATAM, INDONESIA.
TEL: [phone] FAX: [phone]
E-mail: [e-mail]

P.T. HAKKO PRODUCTSTAMA INDONESIA

KEBON JERUK PLAZA, BLOK D NO. 6, JALAN RAYA PERJUANGAN,
JAKARTA BARAT, JAKARTA 11530, INDONESIA.
TEL: [phone] FAX: [phone]
E-mail: [e-mail]

4

Nov. 2000

MA00973JU001130