Hitachi H 65 Manual

--- 8 --- Instruct the customer to check the amount of oil periodically by holding the tool upright, as illustrated below, and
observing the oil level in the Oil Gauge.  When the oil level  drops to a point approximately 3 mm (7/64) or less
from the bottom of the Oil Gauge, remove the Oil Gauge and replenish the oil.
Fig. 2
Oil Gauge
Hold the tool
upright, and
check the amount
of oil.3 mm (7/64)
Replenish oil when level
is approx. 3 mm (7/64) or less
from bottom of Oil Gauge.
Under average operating...

--- 9 ---
8. REFERENCE INFORMATION
8-1. Structure of the Main Body
The primary structure of the Model H 65SC is similar with the Model PH-65A, as illustrated. (Fig. 3)
Fig. 3
8-2. Stop Lever [Tool Retainer] (Fig. 4 and Fig. 5)
(1) Clean, then smear the tool shank with
grease or machine oil. (Fig. 4)
(2) Rotate the stop lever 180˚ in a
clockwise direction while pulling it
toward you. Next, insert the tool shank
into the hexagonal hole on the front
cover. (Fig. 4)
(3) Clamp the tool by turning the stop...

--- 10 --- 8-3. Movement of the 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 fitting portion of the Front Cover.
8-4. No-load Striking Preventive Mechanism
This machine is so constructed that when the bit end is lifted off the surface being worked, the striker is caught in
the mouth to prevent...

--- 11 ---Fig. 6
Press the end surface of the armature
with a hand press.
Tubular jig Armature Assy [61] Inner Cover [45]
Crank Shaft [37]
 Disassembly of the Crank Shaft [37] section
First, remove the four Seal Lock Hex. Socket Hd. Bolts M5 x 16 [33] which fix the Bearing Cover [32].  Then, as
illustrated in Fig. 7, support the lower surface of the Inner Cover [45] with an appropriate tubular jig, align an
appropriate steel rod with the end surface of the Crank Shaft [37], and press down on the steel...

--- 12 ---
 Removal of the Striker [8] and related parts
Remove the four Nylock Hex. Socket Hd. Bolts M8 x
35 [22], and separate the Cylinder Case [20] from the
Housing Assy [59].  From the Cylinder Case [20],
take out the Striker [8], Piston [11], and Connecting
Rod Assy [38] in a single body.  Holding the Striker
[8] firmly in one hand, grasp the Connecting Rod
Assy [38] in the other hand and pull it forcefully to
separate it from the Striker.  Finally, extract the Piston
Pin [10] from the Piston [11],...

--- 13 ---
9-1-2. 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 [37] section:
Press-fit the Ball Bearing 6205DDCMPS2L [31] into the Inner Cover [45], and fasten Bearing Cover [32] onto
the Inner Cover [45] with the four Seal Lock Hex. Socket Hd. Bolts M5 x 16 [33].  Support the inner race of the
Ball Bearing 6205DDCMPS2L [31] with an appropriate jig, and...

--- 14 --- (4) Reassembly of the Oil Felt:
To replace the Oil Felt [79], follow the procedures described below.
Fig. 12 Slender-Tipped Rod
or Steel Wire
Fig. 13 Oil Felt [79]
Recess
Felt Holder (C) Assy [77]Oil Felt [79]
Protruding amount:
10 --- 11 mm (0.39 --- 0.43)
1) As illustrated in Fig. 12, fit the wide end of the Oil Felt [79] into the oiling hole, and push it through with a
slender-tipped rod or steel wire.
2)  When approximately 5 mm (0.2) of the Oil Felt [79] has been pushed through into the...

--- 15 ---
Fig. 14 Oil Felt [79]
Fig. 15 Recess Protrusion
Oil Tank ChamberFelt Holder (C) Assy [77]Connecting Rod Assy [38]
M8 x 16 Hex.
Bolt [35]
Housing
Assy
Oil Felt [79]Oil Tank Chamber
(5) How to install Seal Ring (A) [44]:
To prevent oil from leaking through between the Housing Assy [59] and the Inner Cover [45], Seal Ring (A)
[44] is installed in the Inner Cover [45] for sealing oil.  When fitting Seal Ring (A) [44] in the ring groove on the
Inner Cover [45], exercise care not to allow the Seal...

--- 16 ---
9-1-3. Screw Locking Agent TB1401
(1) Prior to reassembly, all M5, M6, Hexagon Socket Hd. Bolts and Machine Screws must be coated with Screw
Locking Agent ThreeBond TB1401.
(2) The following parts must be replaced with Hitachi Genuine Parts once they are loosened.
 Front Cover Fixing Bolts: M8 x 30 [3]
 Cylinder Case Fixing Bolts: M8 x 35 [22]
 Fixing Bolt on the Connecting Rod Assy [38]M8 x 16 [35]
(CAUTION)    If fastening bolts come loose from vibration, it could cause serious damage to the...

--- 17 ---
Stator Wiring diagram of products without noise suppressor (Fig. 18)
Stator ArmatureTube
TubeSwitch
Pillar TerminalBlack
WhitePlug Tube
Fig. 18
9-1-6. Insulation Tests
On completion of disassembly and repair, measure the insulation resistance and dielectric strength.
Insulation resistance: 7 MΩ or more with DC 500 V Megohm Tester.
Dielectric strength: AC 4000 V/1 minute, with no abnormalities 
•••220 V --- 240 V
(and 110 V for U.K. products)
AC 2500 V/1 minute, with no abnormalities 
•••110 V...