Hitachi H 90SE Technical Data And Service Manual
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Hitachi H 90SE Technical Data And Service Manual

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See also: Operation Manual & Safety Instructions , Instruction Manual
MODEL
H 90SE
POWER TOOLS
TECHNICAL DATA
HAMMER
H
AND
H 90SE
SERVICE MANUAL
LIST No. E456
Apr. 2000
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

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  • Page 1 MODEL H 90SE POWER TOOLS TECHNICAL DATA HAMMER H 90SE SERVICE MANUAL LIST No. E456 Apr. 2000 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...

  • Page 2: Table Of Contents

    Notice for use Specifications and parts are subject to change for improvement. Refer to the Hitachi Power Tool Technical News for further information. CONTENTS Page 1. PRODUCT NAME • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •...

  • Page 3: Product Name

    28.5 mm (1-1/8") hexagonal shank hammer accessories (ie: collar, collar & groove and groove types). The Model H 90SE has been developed based on the current Model H 90SC, which features the use of Kango Model 2500 Accessory tools. Chipping and demolishing capabilities are equivalent to the Model H 90SC.

  • Page 4: Selling Point Descriptions

    4-1-2. Tool retainer accepts 3 types of 28.5 mm (1-1/8") hex. shank hammer accessories Three types of hex. shank tools (Fig. 1) can be used in the Model H 90SE by turning the tool retainer in Collar type the following two methods.
  • Page 5 4-1-3. Improved shock absorbing handle equipped with Involute Neidhart spring method The involute-type Neidhart Spring employed in the vibration-absorbing handle significantly reduces operator fatigue and permits comfortable operation for extended periods of time. HITACHI HITACHI HITACHI H 90SE H 90SC H 85 Vibration-absorbing handle Provided Provided...

  • Page 6: Specifications

    5. SPECIFICATIONS Item H 90SE Power source Single-phase AC 50/60 Hz Voltage (V) 110, 115, 230, 240 Motor type AC single-phase series commutator motor Insulation structure Double insulation Enclosure Materials: Aluminum alloy die casting Glass-fiber reinforced plastic resin Paint: Hammer-net silver green and black...

  • Page 7: Optional Accessories

    5-1. Optional Accessories 1. Demolition work (1) Bull point Overall length Code No. 410 mm (16-9/64") 996372 520 mm (20-15/32") 985230 2. Grooving and chiseling work (1) Cold chisel Overall length Code No. 520 mm (20-15/32") 985231 3. Cutting and stripping work (asphalt cutting, etc.) (1) Cutter Width Overall length...
  • Page 8 4. Digging (substitute pick-ax) (1) Scoop Overall length Code No. 546 mm (21-1/2") 985233 5. Tamping work (1) Rammer (2) Shank Code No. Overall length Code No. 305880 395 mm (15-35/64") 308092 200 mm in dia. 6. Grease for impact drill 500 g (1.1 lbs.) can Code No.

  • Page 9: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS 6-1. Specification Comparisons Maker HITACHI Model name H 90SE H 90SC H 85 Power input 1,450 1,450 1,330 1,700 1,800 Full-load impact rate 1,000 1,030 (33-13/16") (33-19/128") (34-23/32") (33-13/64") (33-17/64") Dimensions (illustration below) (24-31/32") (24-31/32") (25-9/32")

  • Page 10: Demolition Performance Comparisons

    The data shown in Fig. 4 are obtained in actual factory tests, and are for reference only. The demolished amount may vary in accordance with operating conditions, operator skill, etc. Demolished amount (kg/30 min.) H 90SE 349 (768 lbs.) H 90SC 349 (768 lbs.)

  • Page 11: Precautions In Sales Promotion

    7. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model H 90SE Electric 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.

  • Page 12: Grease Replacement

    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 between 6-month (approx.) change intervals 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.

  • Page 13: Reference Information

    8. REFERENCE INFORMATION 8-1. Air Damper There is an air chamber constructed between the second hammer and the hammer holder. The compression of the air within the air chamber functions in the same way as a spring to maintain continuous and close contact between the second hammer and the accessory tool mounted in the retainer.

  • Page 14: Vibration-Absorbing Construction

    (A) rotates, bending the handle dampers and reducing vibration. Also, the angle of rotation of the handles is controlled by stoppers. Through adoption of this type of vibration-absorbing handle construction, the Model H 90SE causes much less operator fatigue and can be comfortably operated for significantly longer periods than conventional products.
  • Page 15 (2) Level of handle vibration in 'Z' direction The graph below illustrates the relationship between handle pressing force and handle vibration level in the 'Z' direction. Vibration level of main body in Z direction Vibration level of handles in Z direction Pressing force (load) (kgf) (Note) For improved operability in chipping and breaking operations, it is recommended that operating force be limited to the dead weight of the tool rather than pressing forcefully down on the handles.

  • Page 16: Tool Retainer

    8-4. Tool Retainer Three types of shank tools (Fig. 1) can be mounted to Retainer Front cover the Model H 90SE by turning the saddle-shaped retainer. (1) Mounting air tool shank tool and standard hex. shank tool Raise the retainer in A direction and insert the...

  • Page 17: Repair Guide

    9. REPAIR GUIDE 9-1. Precautions and Suggestions for Disassembly and Reassembly of the Main Body The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly diagram. 9-1-1. Disassembly [NOTE] If it is difficult to loosen and remove the fixing bolts, use an appropriate heating device to heat them to approximately 80 ˚C (176 ˚F).
  • Page 18 Disassembly of the Crank Shaft [84] section Remove the four Seal Lock Hex. Socket Hd. Bolts M8 x 18 [81]. As illustrated in Fig. 14, support the lower surface of the Inner Cover [76] with an appropriate tubular jig (100 mm inner dia.), apply an appropriate steel rod (maximum diameter of 19 mm) to the end surface of the Crank Shaft [84], and push it downward with an arbor press.
  • Page 19 Removal of the Striker [19] and related parts Remove the four Nylock Bolts M10 x 45 [16], and separate the Cylinder Case [15] from the Housing Ass'y [85]. From the Cylinder Case, take out the Striker [19], Piston [20] and Connecting Rod Ass'y [23] in a single body.
  • Page 20 9-1-2. Reassembly Reassembly can be accomplished by following the disassembly procedure in reverse. However, special attention should be given to the following items. Reassembly of the Crank Shaft [84] section Mount the Bearing Boss [80], Oil Seal [82] and Ball Bearing 6305VVCM [78], and Distance Ring (C) [77] onto the Crank Shaft [84], and secure the Bearing Boss [80] to the Inner Cover [76] with the four Seal Lock Hex.
  • Page 21 Reassembly of the Oil Seal [82] When mounting the Oil Seal [82] in the Bearing Boss [80], carefully ensure that they are mounted in the proper direction as described below. (1) Mounting of the Oil Seal [82] As illustrated in Fig. 18, the lip side of the Oil Seal [82] must be facing in the same direction in which the Crank Shaft [84] is assembled.
  • Page 22 (1) Prior to reassembly, all M4, M5, M6, M8 and M10 hexagon socket hd. bolts and machine screws must be coated with screw locking agent TB1401. (2) The following parts must be replaced with new Hitachi genuine parts if they are loosened once. Front cover fixing bolts:...
  • Page 23 Wiring diagram of products without noise suppressor Switch Stator Tube Black Tube Plug Armature White Stator Pillar terminal Fig. 21 Schematic diagram Handle (A) [29] Switch Lever [26] Switch [43] Support [45] Cord Armor [31] Vinyl Tube (A) [38] Cord [30] Noise Suppressor [32] Handle Holder (B) [46] Housing Ass'y [85]...
  • Page 24 Safety precautions in wiring work (See Fig. 22.) The Switch [43] is flexibly supported by the Support [45] to protect it from excessive vibration and extend its service life. The outer surfaces of lead wires are covered by Vinyl Tubes (A) [38]. The vinyl tubes are utilized to protect the lead wires from damage.

  • Page 25: Standard Repair Time (Unit) Schedules

    10. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable 120 min. MODEL Fixed Work Flow H 90SE Switch Gear Cover Counter Gear Ball Bearing (6201) x 2 Ball Bearing (6204) Cord General Assembly Armature Ass'y Stator Ass'y Housing Ball Bearing Fixed Cost...

  • Page 26: Assembly Diagram For H 90Se

    Assembly Diagram for H 90SE --- 24 ---...
  • Page 27 H 90SE PARTS ITEM CODE NO. DESCRIPTION REMARKS USED 318-650 RETAINER 994-416 ROLL PIN D6X55 318-651 LEVER PIN 306-373 NYLOCK HIGH TENSION BOLT M12X40 318-655 DAMPER (B) 305-621 RETAINER DAMPER 318-652 FRONT COVER 993-188 O-RING 877-316 O-RING (S-90) 318-653 SECOND HAMMER...
  • Page 28 H 90SE PARTS ITEM CODE NO. DESCRIPTION REMARKS USED 981-987Z CORD CLIP FOR SUI 982-095 TAPPING SCREW (W/WASHER) D4X20 992-891 SWITCH (A) (1P SCREW TYPE) W/O LOCK 981-533Z SWITCH (2P PILLAR TYPE) W/O LOCK FOR AUS 949-423 WASHER M4 (10 PCS.)

  • Page 29: Standard Accessories

    H 90SE PARTS ITEM CODE NO. DESCRIPTION REMARKS USED 305-635 CAP COVER 937-949 BRUSH CAP 999-086 CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 305-597 BRUSH HOLDER 938-477 HEX. SOCKET SET SCREW M5X8 305-627 INTERNAL WIRE HOLDER 305-630 TAIL COVER 990-935 SEAL LOCK HEX.

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