Makita HM1214C User Manual

ECHNICAL INFORMATION

Model No.

Description

HM1214C

Demolition Hammer

CONCEPT AND MAIN APPLICATIONS

Model HM1214C is a 10kg-class demolition hammer adapted for SDS-MAX bits. The main features are as follows: AVT (Active dynamic vibration absorber) for reduced vibration during chipping Suppression of motor speed during no-load for reduced vibration when idling In-line tool design optimum for downward vertical applications High work efficiency

Specification

Dimensions: mm (")

Length (L)

Width (W)

Height (H)

PRODUCT

P 1/ 20

700 (27-1/2)

129 (5-1/8)

265 (10-3/8)

Voltage (V) Cycle (Hz)

110 120

220 230 240

Impacts per min: min-1=ipm

Shank type Adapted for SDS-MAX bits

Shank diameter: mm (")

Vibration absorption

Electronic control

Double insulation

Power supply cord: m (ft)

Net weight: kg (lbs)

AVT (Active dynamic

vibration absorber)

Vibration absorbing handle

Variable speed control by dial

Soft start

Constant speed control

Suppression of motor speed during no-load

Current (A)

15 14

7.8

50/60 50/60

50/60 50/60 50/60

Europe, Korea, Cyprus: 4.0 (13.1)

Other countries: 5.0 (16.4)

Continuous Rating (W) Input Output 1,510

--1,510 1,510 1,510

950 - 1,900

18 (11/16)

Yes

Brazil: 2.0 (6.6)

11.7 (25.8)

700 700

750 750 750

Max. Output (W)

1,600 1,600

1,800 1,800 1,800

Weight according to

EPTA-Procedure 01/2003: kg (lbs)

12.3 (27.1)

Standard equipment

Side handle (D-shaped) ........... 1

Bit grease .................................. 1

Bull point .................................. 1

Note: The standard equipment for the tool shown above may vary by country.

Plastic carrying ........................ 1

Cleaning cloth .......................... 1

Optional accessories

Bull points Cold chisels Scaling chisels Scaling chisel (for Tile)

Grooving chisel Clay spade Bushing tool Rammer

Grease vessel (containing 30g hammer grease) Plastic carrying case Safety goggles Hammer service kit

P 2/ 20

Repair

CAUTION: Remove the hammer bit from the machine and disconnect the Machine from power source for safety before repair/ maintenance in accordance with the instruction manual!

[1] NECESSARY REPAIRING TOOLS

[2] LUBRICATIONS [2] - 1 Tool holder section

Fig. 1A

Code No. Description Use for

1R003 Retaining ring S pliers ST-2N Removing Ring spring 26

Pressing down Slide sleeve for easy removing of Ring spring 43

1R023

1R024

Pipe Ring (for Arbor press)

Press Tool (for Arbor press)

Assembling Helical gear 521R031

Bearing setting pipe 28-20.2

Removing Counter shaft1R045

Gear extractor (large)

Attaching to 1R045, when removing Counter shaft1R346

Center Attachment

Supporting Crank shaft for assembling Helical gear 521R165

Gear extractor (large)

Fitting Fluoride ring 28 on Impact bolt1R214

Taper sleeve

Removing / Assembling Crank shaft1R217

Ring 22

Removing M4 Hex socket head bolts1R228

1/4” Hex Shank bit for M4

Removing M6 Hex socket head bolts1R230

1/4” Hex Shank bit for M6

Removing M8 Hex socket head bolts1R231

1/4” Hex Shank bit for M8

Removing M8 Hex socket head bolts1R246

Round Bar for Arbor 18-100

Removing Retaining ring S-8 from Counter shaft1R291 Retaining ring S & R pliers

Disassembling AVT mechanism1R306

Ring spring removing Jig

Pressing down Flat washer 30 for easy removing Ring spring 261R363 Ring spring removing tool

Removing Ball bearing 6203LLB1R247

Round Bar for Arbor 20-100

Separating Cylinder 40 and Motor housing from Crank housing1R263

Bearing Extractor

Removing Ball bearing 6000DDW from Commutator end of Armature1R269

Bearing Extractor (small)

Removing Ball bearing

1R212 Tip for Retaining Ring Pliers Attaching to 1R003, when removing Ring spring 26

Item No.

Apply Makita grease N.No.2 to the following portions designated with the gray triangle to protect parts and product from unusual abrasion.

Description Portion to lubricate

Chuck cover

Tool holder section

Release cover

Change ring cover

Tool holder

1 Tool holder cap

Rubber ring 30

Chuck ring

Change ring

Rock ring

Tool retainer

Rip portion

Inside where Tool holder contacts

Inside where 8 Tool retainers contact

Inside which 14 Lock ring accepts

Its inside where Tool holder contacts

The belly portion where Hammer bit contacts

P 3/ 20

Repair

[2] LUBRICATIONS [2]-2 Hammer section

Apply Makita grease R.No.00 to the following portions designated with the black triangle to protect parts and product from unusual abrasion.

Apply Makita grease N.No.1 and Makita grease R.No.00 to the following portions designated with the black triangle to protect parts and product from unusual abrasion.

Fig. 1C

Item No. Description Portion to lubricate

Rubber ring 24

Piston

Connecting rod

Shoulder sleeve

Impact bolt

Cylinder section

Striker

25 Fluoride ring 28

35 Cylinder 40

24 X ring 21

Out side for smooth moving of Impact bolt in Tool holder

b Apply approx. 10g grease for smooth moving of Striker and Piston

a Apply approx. 10g grease for smooth moving of Striker and Impact bolt

44 Pin 12

Drum portion for smooth moving of Connecting rod

Barrel complete

a Inside of Tool holder guide which accepts Tool holder

b Inside of Barrel complete for smooth moving of Weight guide of AVT.

[2]-3 Gear and Crank section

Fig. 1B

Barrel and AVT mechanism

Tool holder guide (factory-assembled)

Counter weight

Compression spring 58

Cylinder guide

Slide sleeve

Weight guide, covering

Counter weight

Gear complete 34-48

Ball bearing 6304LLU

Crank shaft

65 Needle bearing 1613 Needle portion where Counter shaft is accepted

Helical gear 52

Item No. Description Portion to lubricate

55 Oil seal 20 Lip portion

approx. 50g Makita grease N.No.1

a little of Makita grease R No. 00

approx. 60g Makita grease R No. 00

Crank housing complete

Counter shaft

a Gear room for smooth engaging of Gears

b Crank room

Gear and Crank section

Fig. 1D

P 4/ 20

Repair

[3] DISASSEMBLY/ASSEMBLY [3]-1. Chuck section

DISASSEMBLING

Controller cover

Handle section

Tool holder cap

Ring spring 26

Flat washer 30

Pressing down Flat Washer 30 with 1R363, remove Ring spring 26.

1R363

Socket Wrench 13

Chuck cover

Release cover

slotted head screwdriver

You can stand the Machine for easy repairing of these sections.

Remove Tool holder cap.

Ring spring 26, Flat washer 30 and Tool holder come into sight.

Separating Handle section, remove Controller cover by disconnecting Controller’s connector from Brush holder unit. Electrical parts (Switch, Controller, Power supply cord) can be removed as a unit.

M6x30 Hex socket head bolt (4pcs.)

4x18 Tapping Screw (2pcs.)

Controller

Switch

Remove Handle section and Controller cover so that you can stand the machine for easy repairing of the section except Motor and Crank section. See Fig. 2. Chuck section can be disassembled as illustrated in Figs. 3 and 4.

Power supply cord

Fig. 2

Fig. 3

Fig. 4

Flat washer 30

Rubber ring 30

Chuck ring

1R212

The following parts can be removed.

Tool retainer

Spring guide

Tool retainer

Remove Tool retainer, pressing down Spring guide.

Remove Spring guide and Compression spring 56.

Remove Change ring cover. Change ring will come with it.

Spring guide

Compression spring 56

Change ring

Retaining ring WR-45

Change ring cover

Change ring

Remove Retaining ring WR-45. Change ring can be separated from Change ring cover.

P 5/ 20

Repair

[3] DISASSEMBLY/ASSEMBLY [3]-1. Chuck section

[3]-2. Barrel section

DISASSEMBLING

ASSEMBLING

Fig. 5

Fig. 6

(1) Do the reverse step of Disassembly. Refer to Figs. 4and 3. However, assemble Handle section before mounting Tool holder cap. (2) Assemble Tool holder cap as illustrated in Fig.5.

Put Tool holder cap on ground, and push Tool holder to Tool holder cap while making use of the machine weight.

Tool holder cap

(1) Remove Handle section and Controller cover to hold the machine upright. (Fig. 2) (2) Separate Barrel section from Crank housing complete, and remove Impact bolt from Barrel section. (Fig. 6) (3) Disassemble Cylinder and Striker as illustrated in Figs. 7 and 8.

M8x30 Hex socket head bolt (4pcs.)

No need to disassemble Chuck section.

Push the removed Barrel section with screwdriver inserted from Tool holder cap. Impact bolt can be removed from Barrel section.

Separate Barrel, Barrel cover and Chuck section from Crank housing complete as illustrated below.

M6x30 H.S head bolt with GM

Impact bolt

Rubber ring 24

Impact bolt

Shoulder sleeve

Rubber ring 24

Shoulder sleeve

1R023

Note: Even after removing Cylinder 40, do not lay Crank housing complete, Pin 6 (a component of AVT) can easily fall out of Crank housing complete.

1R023

Striker

Take out Striker from Cylinder 40, and Remove O ring 31.5 from Striker.

O ring 31.5

1R263

Cylinder 40

Pull off Pin 6 after removing Cylinder.

Put 1R023 onto Crank housing as illustrated below.

Remove Cylinder 40 and Pin 6, as illustrated below. The component parts of AVT come with Cylinder 40.

Fig. 7

Fig. 8

Components of AVT

P 6/ 20

Repair

[3] DISASSEMBLY/ASSEMBLY [3]-2. Barrel section (cont.)

DISASSEMBLING

ASSEMBLING

Crank housing side

Ring 45

O ring 36 (3pcs.)

Slide sleeve

Compression spring 58

Tool holder side

Remove O ring 36 and Ring 45 from Crank housing side of Cylinder 40 as illustrated below. Ring spring 43 still remains on the Cylinder as a stopper for Slide sleeve.

1R024

1R356

Fig. 9 Fig. 10

Fig. 11

O Ring 41

After removing Ring spring 43, the component parts of AVT are removed from Cylinder 40 as illustrated below.

Cylinder 40 Cylinder

guide

Weight guide

Counter weight

1R306

Pressing down Slide sleeve as illustrated below, remove Ring spring 43.

Ring spring 43

Slide sleeve

Ring spring 43

Component parts of AVT

Slide sleeve

(4) The components of AVT can be removed from Cylinder 40 (Figs. 9

(1) Assemble O ring 41 to Cylinder 40. And assemble the component parts of AVT. (Fig. 11) (2) Secure the component parts of AVT with Ring spring 43. (Fig. 10) (3) Assemble Ring 45 and 3 pcs. of O ring 36 to Cylinder 40. (Fig. 9) The assembling of Cylinder section is finished. And mount it to Crank housing as illustrated in Fig. 12.

Pin 6

Piston

Do not forget to assemble Pin 6 for AVT mechanism.

Aligning Cylinder hole to Piston, insert Cylinder into Crank housing complete by striking.

O ring 31.5

Facing O Ring 31.5 assembled side to Crank housing complete, insert Striker into Cylinder 40.

Striker

Fig. 12

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