Hitachi H 65SB2 Manual

TECHNICAL DATA
AND
SERVICE MANUAL
DEMOLITION HAMMER
H 65SB2
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST No. E482 Oct. 2004
H
MODEL
H 65SB2
Hitachi 
Power Tools

REMARK:
Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol is
used in the place of company name and model name of our competitor.
The symbol utilized here is as follows:
Symbol Utilized
Competitor
Company Name Model Name
MAKITA HM1304
C-1
MAKITA HM1500
C-2

CONTENTS
Page
1. PRODUCT NAME ........................................................................................................................... 1
2. MARKETING OBJECTIVE ............................................................................................................. 1
3. APPLICATIONS .............................................................................................................................. 1
4. SELLING POINTS .......................................................................................................................... 1
4-1. Selling Point Descriptions ............................................................................................................... 2
5. SPECIFICATIONS .......................................................................................................................... 3
5-1. Optional Accessories ...................................................................................................................... 4
6. COMPARISON WITH SIMILAR PRODUCTS ................................................................................ 5
6-1. Specification Comparison ............................................................................................................... 5
6-2. Demolition Performance Comparison ............................................................................................. 5
7. PRECAUTIONS IN SALES PROMOTION ..................................................................................... 6
7-1. Handling Instructions ...................................................................................................................... 6
7-2. Caution Plate .................................................................................................................................. 6
7-3. Grease Replacement ...................................................................................................................... 7
7-4. O-ring Replacement ........................................................................................................................ 7
8. REFERENCE INFORMATION ........................................................................................................8
8-1. Sealed and Dust-proof Structure .................................................................................................... 8
8-2. Vibration-proof Structure ................................................................................................................. 8
8-3. Stop Lever [Tool Retainer] .............................................................................................................. 8
8-4. Movement of Stop Lever ................................................................................................................. 9
9. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY .......................................................... 10
9-1. Disassembly ................................................................................................................................. 10
9-2. Reassembly .................................................................................................................................. 12
9-3. Application of Adhesive ................................................................................................................. 14
9-4. Tightening Torque ......................................................................................................................... 14
9-5. Wiring Diagram ............................................................................................................................. 15
9-6. Insulation Tests ............................................................................................................................. 15
9-7. No-load Current Value .................................................................................................................. 15
10. STANDARD REPAIR TIME (UNIT) SCHEDULES ..................................................................... 16
Assembly Diagram for H 65SB2

--- 1 ---
1. PRODUCT NAME
Hitachi Demolition Hammer, Model H 65SB2
2. MARKETING OBJECTIVE
The new Model H 65SB2 is the upgraded version of the current Model H 65SB, developed to realize the class-top
demolition performance and durability with low noise and vibration level.
The outstanding features are as follows:
(1) Strongest demolition power and lowest noise and vibration level in this class.
(2) More rigid and durable housing than that of the current model thanks to the analysis technology.
(3) Soft-touch switch handle comfortably fits in the palm of a hand.
(4) Unique design.
3. APPLICATIONS
Crushing of concrete and similar materials
Groove and channel digging in concrete
Groove and channel digging in asphalt and gravel roads
Tamping/compacting of asphalt and graveled roads
Cutting of asphalt
4. SELLING POINTS
Vibration absorbing handle
Vibration insulating structure
Strongest demolition power in this class
Soft-touch and 360û
rotation side-handle
Soft-touch grip for
easier handling
Internal double-insulation construction
with sturdy aluminum frame

--- 2 ---
4-1. Selling Point Descriptions
(1) Strongest demolition power in this class:
The powerful impact force of each blow
ensures efficient and easy crushing of
concrete. The crushing performance is 1.3
to 1.5 times more powerful than similar
products.
(2) Anti-vibration handle for less operator fatigue:
There are two anti-vibration rubbers, illustrated below, designed to efficiently absorb the vibration from the
main body of the tool, and minimize its transmission to the arms of the operator. One is mounted between the
handle and the gear cover; the other is mounted between the handle and the housing.
Anti-vibration rubber Made of natural rubber
Anti-vibration rubber
Handle side
The side handle made of natural
rubber reduces vibration transmitted
to hands for reduction of operator's
fatigue.
Anti-vibration side handle
(3) Provided with shock absorbers to reduce vibration during operation.
Vibration transmitted from an attachment tool to the main body is reduced by floating the front cover with two
shock absorbers (front dampers). The Model H 65SB2 is easier to operate and reduces operator fatigue.
(4) Soft-touch switch handle comfortably fits in the palm of a hand.
The double-layer molded switch handle consists of a nylon resin base covered with a soft resin to ensure a
soft touch.
(5) Internal double-insulation construction with sturdy aluminum frame
The Model H 65SB2 is equipped with a very sturdy (highly rigid) aluminum die-cast outer frame that is the
same as the current Models H 65SB and H 45MR. In addition, a plastic internal S holder is adopted to realize
double-insulation construction. The housing has greater rigidity thanks to the ribs efficiently positioned
according to the analysis technology, and also the double-insulated motor has greater durability. The service
life of the carbon brushes is greatly prolonged, minimizing disconnection of the armature and grease leakage.
HITACHI
H 65SB
HITACHI
H 65SB2
Concrete
demolition
ratio (%)
Concrete
demolition
amount (kg)
100
287
(565.1 lbs.)
C-1
89
256
(565.1 lbs.)
67
192
(423.3 lbs.)
C-2
80
230
(507.1 lbs.)

--- 3 ---
Aluminum alloy die cast, cast aluminum alloy,
nylon resin (handle, back cover)
Silver green metallic and black
Trigger switch with stopper
D-type handle
1,340 W (For Australia only 1,400 W)
1,400 BPM
16.5 kg (36.4 lbs.) [Excluding cord]
28.5 kg (62.8 lbs.)
Corrugated cardboard box (with plastic tool case)
Steel carrying case •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1 pc.
Bull point •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1 pc.
Hexagon bar wrench (for M8) ••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1 pc.
Hexagon bar wrench (for M4) ••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1 pc.
AC single phase
Power source
Voltage
Current
Type of motor
Enclosure Material
5. SPECIFICATIONS
Type of switch
Switch handle configuration
Power input
Full-load blow per minute
Net weight
Shipping weight
Packaging
Standard accessories
AC single phase commutator motor
110 V
12.8 A
115 V
12.2 A
120 V
11.8 A
127 V
11.2 A
220 V
6.4 A
230 V
6.1 A
240 V
5.9 A
Painting

--- 4 ---
+
+
5-1. Optional Accessories
Grooving and edging work:
(1) Cold chisel
Overall length 410 mm
Digging work (Substitute for pickaxe):
Part No. 944962
(1) Scoop
Overall length 550 mm Part No. 944967
+
Cutting and stripping work:
(Asphalt cutting and similar works)
(1) Cutter
Overall length 410 mm Part No. 944964
+
Tamping work:
(1) Rammer
Ext. dia.: 200 mm
Part No. 944966
(2) Shank
Overall length 250 mm
Part No. 944965
Impact drill grease:
500 g (Can)
Part No. 981840
30 g (Tube)
Part No. 980927
1
2
3
4
+
Grease A

--- 5 ---
H 65SB2
6. COMPARISON WITH SIMILAR PRODUCT
6-1. Specification Comparison
Maker
Model
Power input
Full-load impact rate
W
/min.
mm
HITACHI
1,340
1,400
kg
J
Weight
(without cord)
726
Double insulation
84.6
121.5
Length
Width
Height
16.5 (36.4 lbs.)
Full-load vibration level
mm
mm
246
118
42.0
Dimensions
dB (A)
Impact energy per stroke
Insulation structure
No-load noise level
Shock absorbing handle
dB (VL)
Provided
H 65SB
1,240
1,400
726
Double insulation
85.1
123.0
16.0 (35.3 lbs.)
235
120
42.0
Provided
1,430
1,450
647
Double insulation
85.2
124.0
15.0 (33.1 lbs.)
217
116
Not provided
1,430
1,300
647
Double insulation
17.0 (37.5 lbs.)
215
117
Not provided
C-1 C-2
27.5 28.5
Length
Height
Width
6-2. Demolition Performance Comparison
The products listed below were subjected to 30 minutes of chiseling operation on identical concrete structures or
blocks, and the amount of concrete demolished were compared as shown.
NOTE: The values above are for reference only. Demolition amount may vary in accordance with
operating conditions, operator skill, etc.
H 65SB2
C-2
H 65SB
230
287
256
200
0100
Demolished amount
(kg/30 min.)
Demolished weight for 30 min. (kg)
At rated
voltage
300
C-1 192

--- 6 ---
CAUTION
The grease should be exchanged once every six months
after the machine is purchased. The authorized HITACHI
power tool repair shop or the shop from where the tool
was bought should be instructed when it is time to
exchange the grease.
Before working on walls, floors, etc., check for buried or
hidden electrical wires and water or gas pipes.
CAUTION
Read thoroughly HANDLING INSTRUCTIONS before use.
7. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model H 65SB2 Demolition Hammer by all of
our customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer
seriously recognizes the importance of the contents of the Handling Instructions, and fully understands the
meaning of the precautions listed on the caution plate attached to each tool.
7-1. Handling Instructions
Although every effort is made in each step of design, manufacture, and inspection to provide protection against
safety hazards, the dangers inherent in the use of any electric tool cannot be completely eliminated. Accordingly,
general precautions and suggestions for the use of electric power tools, and specific precautions and suggestions
for the use of the Hammer are listed in the Handling Instructions to enhance the safe, efficient use of the tool by
the customer. Salespersons must be thoroughly familiar with the contents of the Handling Instructions to be able
to offer appropriate guidance to the customer during sales promotion.
7-2. Caution Plate
Each Model H 65SB2 is provided with a Caution Plate which lists basic precautions (illustrated below) in its use.
Carefully ensure that the customer fully understands and follows these precautions before using the tool.
Caution Plate on the back of the tool case lid

--- 7 ---
7-3. Grease Replacement
Different kinds of grease are used in the electro-pneumatic hammering section and the speed-change gear
section. It is not necessary to replenish the grease unless the tool is disassembled or there is grease leakage due
to a damage or worn seal.
To ensure the smooth reciprocating of the striker and the second hammer, special grease (Part
No. 980927 or 981840 for impact drill) is used in the hammering section. If the hammering
section (inside the cylinder case and housing [crank shaft side]) is disassembled, thoroughly wipe
away all old grease from all parts, and apply 40 g of new grease within the cylinder case and 40 g
of new grease within the housing (crank shaft side). Do not exceed the designated amounts of
grease. If there is excessive grease, it may flow between the striker and piston and cause
reduced hammering efficiency and/or increased recoil force.
N.P.C. SEP-3A (Part No. 930035) is used in the speed-change gear section (inside the Gear Cover).
The proper supply amount is 80 g. Never use the hammering section special grease in the speed-change
section. The special soft grease would leak into the motor section and cause serious problems.
7-4. O-ring Replacement
The O-ring mounted on the piston is extremely important to ensure adequate sealing of the air pressure.
Although the O-ring is made of special rubber to ensure its long service life, it does nonetheless becomes worn
and should be replaced periodically depending on the frequency of use of the tool. With average use, it is
recommended that the O-ring should be replaced every six months to ensure maximum effectiveness.

--- 8 ---
8. REFERENCE INFORMATION
8-1. Sealed and Dust-proof Structure (See Fig. 1.)
The cylinder case section and the housing (crank case side) are sealed by six (6) O-rings, a holder seal, and a
seal ring. These seals serve to prevent leakage of the grease, as well as to prevent dust and dirt from entering
the mechanism.
Fig. 1
8-2. Vibration-proof Structure:
There are anti-vibration cushions (handle rubbers) provided between the switch handle and the crank case and
the motor housing which allow significantly less vibration to transfer from the tool to the arm of the operator than
convetional type hammers.
O-ring
(Inner diameter 44.4 mm)
Cylinder case
Handle rubber
Gear cover
Switch handle
Seal ring
Housing
Oil cap
Anti-vibration rubber
As shown in Fig. 2, the main unit and the handle
are coupled only by the anti-vibration rubber.
As vibration is absorbed by the shearing type
anti-vibration construction, the anti-vibration
effect is high.
8-3. Stop Lever [Tool Retainer] (See Fig. 3.)
To attach and detach the tool (bull point etc.)
as shown in Fig. 3, pull the stop lever in the
direction of arrow, and turn it 180û. Then, fully
insert the tool into the hexagonal hole of the
front cover.
O-ring (Inner diameter 64.4 mm)
O-ring
(Inner diameter 59.6 mm)
O-ring
(Inner diameter 37.5 mm)
Anti-vibration rubber
Vibration works in the shearing
direction of the rubber.
Handle rubber
Plate (A)
(Connected with the
hammer main body)
Plate (B)
(Connected with
the handle)
Fig. 2
Hold the tool with its
flattened part directed
upward. Front cover
Stop lever
Tool shank
Fig. 3
O-ring x 2
(Inner diameter
23.7 mm)

--- 9 ---
8-4. Movement of Stop Lever
After an extended period of use, the operation of the stop lever may become difficult due to incursion of concrete
powder or similar materials into its sliding portion. In such a case, apply oil into the sliding portion between the
stop lever and the fitting portion of the front cover.

--- 10 ---
9. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The circled numbers in the descriptions below correspond to the item numbers in the Parts List and exploded
assembly diagram.
9-1. Disassembly
NOTE: If it is difficult to loosen and remove the fixing bolts, use an appropriate heating device to heat
them to approximately 80û(176ûF).
(1) Disassembly of the Armature Ass'y [75]
A. Loosen the four Seal Lock Hex. Socket Hd. Bolts M4 x 8 [54], remove the Cap Covers [55], Cap Rubbers [56]
and Brush Caps [57], and take out the Carbon Brushes (Auto Stop Type) (1 Pair) [58]. At this time, be very
careful not to lose the disassembled parts.
B. Loosen the four Nylock Hex. Socket Hd. Bolts M8 x 35 [26], and remove the Cylinder Case [22]. Next, after
loosening the Seal Lock Hex. Socket Hd. Bolt M8 x 16 [34], the Connecting Rod Ass'y [31] and the Crank
Washer [33] can be disassembled. Leave the Striker [24] and the Piston [30] as they are.
C. Remove the four Seal Lock Hex. Socket Hd. Bolts M5 x 16 [63] and three Tapping Screws (W/Flange) D4 x 25
(Black) [96]. Remove Handle (A) [85], Handle (B) [87], four Nylock Bolts (W/Flange) M5 x 12 [105] and Back
Cover [82]. Remove the six Seal Lock Hex. Socket Hd. Bolts M6 x 45 [60], Gear Cover [38] and Counter
Gear [65]. Insert a flat-blade screwdriver or a similar tool into the air vent of the Inner Cover [42] and raise the
Inner Cover [42]. Then the Inner Cover [42], Armature Ass'y [75] and Crank Shaft [47] can be removed as a
single unit. At this time, be very careful not to damage the Fan [74].
D. As illustrated in Fig. 4, support the Inner Cover [42] with an appropriate tubular jig, and push down on the end
surface of the armature shaft with a hand press to separate the Armature Ass'y [75] from the Inner Cover [42].
Fig. 4
(2) Disassembly of the Crank Shaft [47] section:
First, remove the four Seal Lock Hex. Socket Hd. Bolts M5 x 16 [46] which fix the Bearing Cover [45].
Then, as illustrated in Fig. 5, support the lower surface of the Inner Cover [42] with an appropriate tubular jig,
align an appropriate steel rod with the end surface of the Crank Shaft [47], and press down on the steel rod
with a hand press. The Ball Bearing 6205DDCMPS2L [44], Distance Ring (B) [41], Final Gear [40], two
Woodruff Keys 4 x 16 [71], and Crank Shaft [47] can then be disassembled from the Inner Cover [42].
Tubular jig
Crank Shaft [47]
Inner cover [42]
Armature Ass'y [75]
Press the end surface of the
armature with a hand press.

--- 11 ---
Fig. 5
Tubular jigCrank Shaft [47]
Inner cover [42]
Ball Bearing 6302VVCMPS2L [39]
Press the end surface of the crank shaft
by fitting a steel rod with a hand press.
Final Gear [40]
(3) Disassembly of remaining parts from the Inner Cover [42]:
Loosen the three Seal Lock Hex. Socket Hd. Bolts M5 x 16 [46], and take out Bearing Cover (A) [67] and the
Ball Bearing 6203DDCMPS2L [68].
(4) Disassembly of the Mouth [17] and realated parts:
Remove six Nylock Hex. Socket Hd. Bolts M8 x 40 [1]. Remove the Collar [3], Damper Plate [2], two Front
Dampers [4] and Front Cover [8] from the Cylinder Case [22]. Then the Second Hammer [9], Shank Sleeve
[16], Damper (A) [14], Mouth [17], Mouth Cover [18], Mouth Washer [19] and Urethane Ring [20] can be
removed as a single unit.
(5) Removal of the O-ring (I.D 26.5) [15]:
As the O-ring (I.D 26.5) [15] is installed in the inner portion of the Shank Sleeve [16], it may be difficult to
remove. As illustrated in Fig. 6, pry the O-ring upward gently with a small minus screwdriver, being very
careful not to damage the surface of the O-ring.
(6) Removal of the Striker [24] and related parts:
Remove the four Nylock Hex. Socket Hd. Bolts M8 x 35 [26], and separate the Cylinder Case [22] from the
Housing Ass'y [49]. From the Cylinder Case [22], take out the Striker [24], Piston [30], and Connecting Rod
Ass'y [31] in a single body. Holding the Striker [24] firmly in one hand, grasp the Connecting Rod Ass'y [31] in
the other hand and pull it forcefully to separate it from the striker. Finally, extract the Piston Pin [29] from the
Piston [30], and separate the Piston from the Connecting Rod Ass'y [31].
(7) Disassembly of the Stop Lever [10]:
Shank
Sleeve [16]
Flat-blade
screwdriver
O-ring (I.D 26.5) [15]
Fig. 6
Damper (B) [7]
Fig. 7
Push Damper (B) [7]
with two flat-blade
screwdrivers.
Needle Roller [11]
Lever Spring [6]
Stop Lever [10]
Overlap the end surface of
the Stop Lever [10] on the
flange portion of the Front
Cover [8].
Spring
Case [5]
3 mm
dia. hole
Steel rod
(3 mm dia.
or less)

--- 12 ---
Fig. 8
9-2. Reassembly
Reassembly can be accomplished by following the disassembly procedures in reverse. However, special
attention should be given to the following items.
(1) Reassembly of the Crank Shaft [47] section:
Press-fit the Ball Bearing 6205DDCMPS2L [44] into the Inner Cover [42], and fasten the Bearing Cover [45]
onto the Inner Cover [42] with the four Seal Lock Hex. Socket Hd. Bolts M5 x 16 [46]. Support the inner race
of the Ball Bearing 6205DDCMPS2L [44] with an appropriate jig, and press-fit the Crank Shaft [47] into the
ball bearing. Next, insert Distance Ring (B) [41] and the two Woodruff Keys 4 x 16 [71] into the Crank Shaft
[47], and press-fit the Final Gear [40] and the Ball Bearing 6302VVCMPS2L [39] with a hand press.
(2) Reassembly of the Armature Ass'y [75]:
Press fit the Ball Bearing 6203DDCMPS2L [68] into the Inner Cover [42], and fasten Bearing Cover (A) [67]
onto the inner cover with the three Seal Lock Hex. Socket Hd. Bolts M5 x 16 [46].
Piston [30] Piston [30]
Striker [24]
Housing
Ass'y [49]
Connecting Rod Ass'y [31]
Respiratory holes
Push
Connecting Rod Ass'y [31]
Respiratory
holes
Striker [24]
Disassembly procedures are illustrated in Fig. 7. Pull the Stop Lever [10] outward in the direction indicated by
the arrow, and turn it slightly so that its end surface comes to rest on the flange portion of the Front Cover [8].
Next, turn the Spring Case [5] so that the holes of the Spring Case [5] are aligned with the Needle Roller [11].
Then, push in Damper (B) [7] with flat-blade screwdrivers to compress the Lever Spring [6]. Finally, while
keeping the lever spring compressed, fit a 3 mm dia. or less steel rod into the hole of the Spring Case [5], and
push out the Needle Roller [11]. The Stop Lever [10], Damper (B) [7], and the Lever Spring [6] can then be
taken out.
(3) Reassembly of the Striker [24]: (Two possible methods)
A. After the Connecting Rod Ass'y [31] has
been assembled into the Housing Ass'y
[49], mount the Piston [30] and press it
into the Striker [24].
B. Mount the Piston [30] onto the Connecting Rod
Ass'y [31], and push down on the Connecting Rod
Ass'y [31] to press the Piston [30] into the Striker
[24].
Push
Either of the two methods described above requires a pressing force of more than 30 kg. When a "hissing" sound
is heard, the piston is properly inserted in the striker. (The "hissing" is the sound of the compressed air escaping
from the striker when the piston reaches the respiratory chambers within the striker.)

--- 13 ---
Fig. 9
(4) Mounting Oil Seal (A) [28]:
When mounting Oil Seal (A) [28] on the Piston [30], ensure
that the lip portion of the oil seal is directed toward the rear
surface of the piston, as illustrated in Fig. 9.
Prior to reassembly, thoroughly coat grease (Grease for
Impact Drill, Part No. 980927, is recommended) on Oil Seal
(A) [28] and O-ring (A) [25], and carefully ensure they are
not damaged.
Piston [30]
Lip
Vinyl Tube (A)
(I.D.7 x T0.5 x 50) [100]
Stator Ass'y [78]
Internal wire
Handle (A) [85]
O-ring (A) [25]
Support [104]
Switch (B) (1P Screw Type) W/Lock [103]
Oil seal (A) [28]
Vinyl Tube [79]
Housing Ass'y [49]
Armature Ass'y [75]
Fig. 10
(5) Safety precautions in wiring work: (See Fig. 10.)
Switch (B) (1P Screw Type) W/Lock [103] is flexibly supported by the Support [104] to protect it from damage
due to vibration which could lead to possible electrical shock. Ensure without fail that the Support [104] is
properly mounted. Also, ensure that the leadwires are properly covered by Vinyl Tube (A) (I.D.7 x T0.5 x 50)
[100], and that the leadwires of the Stator Ass'y [78] and the grounding leadwire are properly supported by
the internal Vinyl Tube [79].

--- 14 ---
9-4. Tightening Torque
Hexagon socket flanged bolts M5
Hexagon socket hd. bolts M4
Hexagon socket hd. bolts M5
Hexagon socket hd. bolts M6
Hexagon socket hd. bolts M8
Tapping screw D4
NOTE: If above bolts are tightened more than the designated values, it may cause breakage.
Without fail, tighten the bolts and screws according to the above specified values.
40 5 kg-cm (34.8 4.3 lb-in)
45 kg-cm (39.1 lb-in)
80 kg-cm (69.5 lb-in)
100 kg-cm (86.9 lb-in)
300 kg-cm (260 lb-in)
20 kg-cm (17.4 lb-in)
(6) Reassembly of the Stop Lever [10]:
Prior to reassembly, thoroughly coat the grease
(Doubrex 251, Part No. 980757, is
recommended) on the sliding portion of the Stop
Lever [10]. As illustrated in Fig. 11, place the end
surface of the Stop Lever [10] on the flange
portion of the Front Cover [8] and compress the
Lever Spring [6] by pressing Damper (B) [7] with
two slender flat-blade screwdrivers. Then, align
the holes of the Stop Lever [10] and the Spring
Case [5], and insert the Needle Roller [11].
+20
0
9-3. Application of Adhesive
(1) Prior to reassembly, all hexagon socket hd. bolts M5 and M6, and machine screws must be coated with Screw
Locking Agent TB1401.
(2) The following parts must be replaced with Hitachi Genuine Parts if they are loosened.
Front cover fixing bolts: M8 x 40 [1]
Cylinder case fixing bolts: M8 x 35 [26]
Fixing bolt on the Connecting Rod Ass'y [31] :M8 x 16 [34]
CAUTION: If fastening bolts come loose from vibration, it could cause serious damage to the
machine. Ensure without fail that TB 1401 Screw Locking Agent is applied as directed
above prior to reassembly.
Before applying the TB 1401, carefully clean any grease or other foreign matter from the
male and female threads with gasoline, thinner or similar cleaning solvents.
+5+4.3
+12.4
0
+20
0
+17.4
0
+17.4
0
+20
0
+5
Fig. 11
[5]
[10]
[7]
[6]
[11]
[8]
+4.3
0

--- 15 ---
Voltage
Current (A) Max.
110 V
5.9 A
9-6. Insulation Tests
After disassembly for repair servicing, the insulation resistance should be measured and the dielectric strength
test (withstand voltage test) performed.
Insulation resistance: 7 M Ωor greater
Dielectric strength: Normal after applying 4000 V for one minute.
9-7. No-load Current Value
After no-load operation for 30 minutes, the no-load current value should be as follows:
115 V
5.7 A
120 V
5.4 A
127 V
5.2 A
220 V
3.0 A
230 V
2.8 A
240 V
2.7 A
9-5. Wiring Diagram
Fig. 12

--- 16 ---
Armature
Ass'y
Ball Bearing
(6201DD)
10. STANDARD REPAIR TIME (UNIT) SCHEDULES
MODEL 10 20 30
Fixed
Variable
H 65SB2
Work Flow
Front Cover
Second
Hammer
O-ring (C)
O-ring (B)
Damper (A)
O-ring x 2
Shank
Sleeve
Mouth
Mouth Cover
Urethane
Ring
Tail Cover
Stop Lever
Cylinder
Case
Housing
Ass'y
Stator Ass'y
Handle (A)
Handle (B)
Handle
Rubber x 2
Back Cover
Inner Cover
Ball Bearing
(6205DD)
Crank Shaft
Ball Bearing
(6203DD)
Striker
O-ring
(1AS-60)
O-ring (A)
Oil Seal (A)
Piston
Connecting
Rod Ass'y
Needle
Bearing
Switch (B)
Cord
Cord Armor
Gear Cover
Ball Bearing
(6302VV)
Final Gear
Ball Bearing
(6201VV)
Counter
Gear
Ball Bearing
(6001VV)
General
Assembly
40 50 60 70 80

ELECTRIC TOOL PARTS LIST
LIST NO. E482
DEMOLITION HAMMER
Model H 65SB2
2004
•
10
•
10
(E1)
Hitachi Power Tools