KATA PENGANTAR DAFTAR ISI_baru.doc

LEMBAR PENGESAHAN

LAPORAN PRAKTIK INDUSTRI

DI PT. SRIKANDI DIAMOND INDAH MOTORS

Jalan RA Basuni No 15 Mojokerto Jawa Timur

Disusun Oleh :

Nama : Moch . Satrio

NIM : 206513405551

Fakultas : Teknik

Jurusan / Prodi : Pendidikan Teknik Otomotif / S1

Malang, 15 Agustus 2009

Diperiksa dan Disetujui

Ketua Jurusan Teknik Dosen Pembimbing

Drs. H. Maftuchin Romlie, M.Pd Dra Ani Martiningsih.NIP. 131672019 NIP 131284274

i

KATA PENGANTAR

Puji syukur Alhamdulillah, penyusun panjatkan kehadirat Allah Yang

Maha Esa, karena berkat rahmat, hidayah serta inayahNYA penyusun dapat

menyelesaikan tugas Praktik Industri di Dealer Resmi Kendaraan Mitsubishi PT.

Srikandi Diamond Indah Motors Mojokerto Jawa Timur, beserta laporannya.

Dalam penyusunan laporan ini banyak pihak yang telah ikut membantu

kelancarannya, oleh sebab itu pada kesempatan kali ini penyusun ingin

menyampaikan terima kasih kepada:

1. Bapak Prof. Dr. Ir. Djoko Kustono, M.Pd selaku Dekan Fakultas Teknik

Universitas Negeri Malang.

2. Bapak Drs. H. Maftuchin Romlie, M.Pd selaku Ketua Jurusan Teknik Mesin

Fakultas Teknik Universitas Negeri Malang.

3. Ibu Drs.Anny Martinigsih. selaku Dosen Pembimbing Praktek Industri.

4. Pimpinan PT. Srikandi Diamond Indah Motors Jalan RA Basuni 15 Sooko

Mojokerto Jawa Timur, yang telah memberikan kesempatan kepada penyusun

untuk melaksanakan Praktik Industri.

5. Bapak Gigih Semedi SH selaku kepala bengkel PT. Srikandi Diamond Indah

Motors Jalan RA Basuni 15 Sooko Mojokerto Jawa Timur, yang telah

memberikan arahan dalam pelaksanaan Praktik Industri.

6. Seluruh Mekanik PT Srikandi Diamond Indah Motors Jalan RA Basuni 15

Sooko Mojokerto Jawa Timur, yang telah memberikan arahan dan bimbingan

dalam proses belajar selama Praktik Industri.

7. Seluruh karyawan PT.Srikandi Diamond Indah Motors Jalan RA BAsuni 15

Sooko Mojokerto Jawa Timur, yang telah banyak memberikan bantuan dalam

pelaksanaan praktik industri.

Adapun maksud dari penyusuna laporan ini adalah untuk menuliskan apa

saja yang telah dilaksanakan dalam kegiatan Praktik Industri di PT Srikandi

Diamond Indah Motors Jalan RA Basuni 15 Sooko Mojokerto Jawa Timur.

Penyususn juga berharap semoga laporan ini bisa bermanfaat bagi penulis sendiri

dan terutama bagi mahasiswa Program Study Pendidikan Teknik Otomptif pada

khususnya serta mahasiswa pada umumnya. Penyusun mrngharapkan masukan

ii

dan saran dari pembaca laporan praktik industri ini demi kebaikan unutk

kedepannya.

Malang,02 November 2009,

Penyusun

iii

DAFTAR ISI

Halaman

LEMBAR PENGESAHAN......................................................................... i

KATA PENGANTAR................................................................................. ii

DAFTAR ISI................................................................................................ iv

DAFTAR GAMBAR................................................................................... viii

BAB I PENDAHULUAN

1.1 Latar Belakang........................................................................... 1

1.2 Profil Tempat Praktik Industri................................................... 3

1.3 Tujuan dan Manfaat Praktik Industri......................................... 3

BAB II TUNE – UP

2.1 Langkah – Langkah dan Hal – Hal yang perlu

Dilakukan pada saat Tune-Up.................................................... 4

2.2 Peralatan dan Perlengkapan Kerja.............................................. 4

2.3 Tune-Up..................................................................................... 5

2.3.1 Pemeriksaan Baterai........................................................... 5

2.3.2 Pemeriksaan Saringan Udara.............................................. 6

2.3.3 Pemeriksaan Busi............................................................... 7

2.3.4 Pemeriksaan Kabel Busi atau Kabel TeganganTinggi....... 8

2.3.5 Pemeriksaan Air Pendingin................................................ 9

2.3.6 Pemeriksaan Air Wiper da Wiper....................................... 9

2.3.7 Pemeriksaan Saringan Bensin............................................ 9

2.3.8 Pemeriksaan Saat Pengapian.............................................. 10

2.3.9 Pemeriksaan Sistem Penerangan........................................ 11

2.3.10 Pemeriksaan Tali Kipas atau Van Belt............................. 11

2.4 Over Houl (OH) Karburator....................................................... 13

BAB III SISTEM REM

3.1 Fungsi Rem................................................................................ 15

3.2 Cara Kerja rem Hidrolik............................................................. 15

3.3 Jenis – Jenis Sistem Rem........................................................... 16

3.3.1 Rem Tromol (Drum Brake)................................................ 17

3.3.2 Rem Cakram (Disc Brake)................................................. 22

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3.4 Boster......................................................................................... 24

3.5 Membuang Udara (Air Bleading).............................................. 25

3.6 Membongkar dan Memasang Rem (Over Houl)........................ 25

3.6.1 Melepas Rem Tromol......................................................... 26

3.6.2 Memasang Rem Tromol..................................................... 26

3.6.3 Melepas Rem Cakram........................................................ 26

3.6.4 Memasang Rem Cakram.................................................... 26

BAB IV RODA DAN BAN

4.1 Fungsi Ban................................................................................. 27

4.2 Tekanan Ban............................................................................... 27

4.3 Pemeriksaan Tekanan Angin Ban.............................................. 28

4.5 Balancing Roda.......................................................................... 29

BAB V SISTEM SUSPENSI

5.1 Fungsi Suspensi.......................................................................... 32

5.2 Jenis Suspensi............................................................................. 32

5.2.1 Rigid Suspension................................................................ 32

5.2.2 Independent Suspension..................................................... 33

5.3 Bagian – Bagian Suspensi.......................................................... 33

5.3.1 Chasis Spring...................................................................... 34

5.3.2 Shock Absorber.................................................................. 36

5.3.3 Lower Arm dan Upper Arm............................................... 37

5.3.4 Stabilizer............................................................................. 37

5.4 Suspensi Kendaraan 4G15 (SS)................................................. 38

5.4.1 Suspensi Depan.................................................................. 38

5.4.2 Suspensi Belakang.............................................................. 38

5.4.3 Hal yang Perlu diperhatikan............................................... 39

5.5 Suspensi kendaraan 4D56 (KUDA) .......................................... 40

5.5.1 Suspensi Depan.................................................................. 40

5.5.2 Suspensi belakang.............................................................. 40

5.5.3 Hal yang Perlu Diperhatikan.............................................. 41

5.6 Suspensi Kendaraan 4G15 (SS)................................................. 42

5.6.1 Suspensi Depan.................................................................. 42

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5.6.3 Hal yang Perlu Diperhatikan.............................................. 43

5.7 Suspensi Kendaraan 4G92/GA12/4G63

(LANCER-GALANT-ETERNA)............................................. 44

5.7.1 Suspensi Depan.................................................................. 44


5.8 Suspensi Kendaraan 4G15 (Maven)........................................... 45

5.8.1 Suspensi Depan.................................................................. 45


5.8.3 Hal – Hal yang Perlu Diperhatikan.................................... 46

5.9 Penggantian Shock Absorber..................................................... 48

BAB VI DASAR – DASAR MPI

6.1 Jenis – Jenis MPI........................................................................ 51

6.1.1 Berdasarkan Jumlah Injektornya........................................ 51

6.1.2 Berdasarkan Penempatan Injektornya................................ 52

6.1.3 Berdasarkan Deteksi Udara masuk..................................... 52

6.2 Konstruksi Dasar MPI................................................................ 54

6.2.1 Umum................................................................................. 54

6.2.2 Basic Injection.................................................................... 55

6.3 Multi Point Injection Mitsubishi................................................ 61

6.3.1 Air Intake System............................................................... 62

6.3.2 Filter Bahan Bakar Bensin (Fuel Filter)............................. 71

6.3.3 Injector................................................................................ 71

BAB VII KOPLING

7.1 Fungsi Kopling........................................................................... 74

7.2 Jenis – Jenis Kopling.................................................................. 74

7.3 Komponen Utama Kopling........................................................ 74

7.3.1 Kanvas Kopling (Disc Clutch)........................................... 74

7.3.2 Pegas Diapragma dan Plat Penekan (Clutch Cover Assy). 75

7.3.3 Release Bearing.................................................................. 75

7.3.4 Garpu Pembebas Kopling (Clutch Release Fork).............. 76

7.4 Cara Kerja Kopling.................................................................... 76

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7.4.1 Posisi Kopling Terhubung.................................................. 77

7.4.2 Posisi Kopling Terlepas...................................................... 77

7.5 Pemeriksaan Kopling................................................................. 77

7.5.1 Kedalam Paku Keling......................................................... 77

7.5.2 Backlash (Selip Balik) Disc Clutch.................................... 77

7.5.3 Input Shaft Bearing............................................................. 78

7.5.4 Clutch Cover....................................................................... 78

7.5.5 Flywheel............................................................................. 78

7.5.6 clutch Release Bearing....................................................... 78

7.5.7 Clutch release Shaft............................................................ 78

7.5.8 Kabel Kopling.................................................................... 79

7.5.9 Penyetelan Peda Kopling.................................................... 79

7.6 Mengganti Kanvas Kopling....................................................... 79

BAB VIII PENUTUP

8.1 Kesimpulan................................................................................ 81

8.2 Saran........................................................................................... 84

DAFTAR LAMPIRAN I (Laporan Harian.................................................. 85

DAFTAR RUJUKAN.................................................................................. 92

DAFTAR NILAI PRAKTIK INDUSTRI……………………………….. 93

vii

DAFTAR GAMBAR

Gambar Halaman

2.1 Batas Volume Air Accu....................................................................... 5

2.2 Pembersihan Kotoran Pada Terminal Accu......................................... 6

2.3 Pengencangan Terminal Accu............................................................. 6

2.4 Pembersihan Busi Menggunakan Sikat Kawat.................................... 7

2.5 Pemeriksaan Celah Busi Menggunakan Fuller.................................... 8

2.6 Kabel Busi atau Kabel Tegangan Tinggi............................................. 8

2.7 Reservoir tank...................................................................................... 9

2.8 Saringan Bensin................................................................................... 10

2.9 Pemeriksaan Tali Kipas....................................................................... 12

2.10 Mengungkit Alternator...................................................................... 13

2.11 Komponen Karburator....................................................................... 14

3.1 Konstruksi Rem Hidrolik..................................................................... 16

3.2 Konstruksi Rem Tangan...................................................................... 16

3.3 Konstruksi Drum Brake....................................................................... 17

3.4 Silinder Roda (Wheel Cylinder).......................................................... 17

3.5 Silinder Roda (Wheel Cylinder).......................................................... 18

3.6 Pegas Pengembali................................................................................ 18

3.7 Backing Plate....................................................................................... 19

3.8 Automatic Adjuster.............................................................................. 20

3.9 Internal Expanding............................................................................... 20

3.10 External Contracting.......................................................................... 20

3.11 Uni Servo Type.................................................................................. 21

3.12 Two Leading single Action Type...................................................... 21

3.13 Leading and trailling Type................................................................. 21

3.14 Duo Servo Type................................................................................. 22

3.15 Two Leading Duoble Action Type.................................................... 22

3.16 Konstruksi Disk Brake....................................................................... 22

3.17 Caliper Disc Brake............................................................................. 23

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3.18 Hidrolik Pressure OFF....................................................................... 24

3.19 Hidrolik Pressure ON........................................................................ 24

3.20 Konstruksi Master VAC.................................................................... 24

3.21 Urutan proses Bleding....................................................................... 25

4.1 Tabel Konversi............................................................................................... 29

4.2 Balancing Statis............................................................................................. 29

4.3 Balancing Dinamis........................................................................................ 29

4.4 Melepas Roda................................................................................................ 31

5.1 Rrigid Suspension dengan Leaf Spring secara Paralel........................ 32

5.2 Rrigid Suspension dengan Leaf Spring secara Transverse.................. 32

5.3 Mac Pherson Type............................................................................... 33

5.4 Swing Axle Type dengan Coil Spring................................................. 33

5.5 Wishbone Type.................................................................................... 33

5.6 Swing Axle dengan Torsion Bar Spring.............................................. 33

5.7 Bagian – Bagian Suspensi................................................................... 33

5.8 Leaf Spring.......................................................................................... 34

5.9 Leaf Spring di Bawah Axle................................................................. 34

5.10 Leaf Spring di Atas Axle................................................................... 34

5.11 Jarak Leaf Spring Terhadap Spring Eye............................................ 34

5.12 Coil Spring......................................................................................... 35

5.13 Torsion Bar........................................................................................ 35

5.14 Rubber Spring.................................................................................... 35

5.15 Shock Absorber................................................................................. 35

5.16 Single Action..................................................................................... 36

5.17 Duoble Action.................................................................................... 37

5.18 Lower Arm dan Upper Arm.............................................................. 37

5.19 Stabilizer............................................................................................ 37

5.20 Suspensi Depan 4G15 (T120 SS)...................................................... 38

5.21 Suspensi Belakang 4G15 (T120 SS)................................................. 38

5.22 Strut Suspensi.................................................................................... 39

5.23 Ball Joint............................................................................................ 39

5.24 Leaf Spring ....................................................................................... 40

5.25 Suspensi Depan 4D56 (Kuda)........................................................... 40

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5.26 Suspensi Belakang 4D56 (Kuda)....................................................... 40

5.27 Leaf Spring........................................................................................ 41

5.28 Preload Bearing................................................................................. 41

5.29 Prosedur Pengencangan Mur............................................................. 41

5.30 Suspensi Depan 4G15 (SS)................................................................ 42

5.31 Suspensi Belakang 4G15 (SS)........................................................... 42

5.32 Lepas Knukle Arm dan Hub Cup...................................................... 43

5.33 Lepas Lock Washer........................................................................... 43

5.34 Lepas Bearing Lock Nut.................................................................... 43

5.35 Lepas Wheel Bearing Oil Seal........................................................... 43

5.36 Pemasangan Wheel Bearing.............................................................. 44

5.37 Pemasangan Wheel Hub dan Wheel Bearing Lock Nut.................... 44

5.38 Suspensi Depan 4G92-GA12-4G63

(Lancer-Galant-Eterna)..................................................................... 44

5.39 Suspensi Belakang 4G92-GA12-4G63

(Lancer-Galant-Eterna).................................................................... 45

5.41 Suspensi Depan 4G15 (Maven)......................................................... 45

5.42 Suspensi Belakang 4G15 (Maven).................................................... 46

5.43 Karet Trailling Rod............................................................................ 46

5.44 Trailling Rod dan Upper Arm............................................................ 47

5.45 Trailling Rod, Upper Arm, dan Shock Absorber............................... 47

5.46 Pemasangan Trailling Rod................................................................. 47

5.47 Posisi Upper Arm.............................................................................. 47

5.48 Mur Pengikat Shock Absorber pada Body........................................ 48

5.49 Melepas Shock Absorber dari Dudukannya...................................... 48

5.50 Treker Untuk Menahan Pegas Spiral................................................. 48

5.51 Melepas Tutup Rubber Mounting Arm............................................. 49

5.52 Melepas Tutup Rubber Mounting Arm............................................. 49

5.53 Posisi Pegas Spiral yang Masih Tertahan Treker.............................. 49

5.54 Pencocokan Dudukan Pegas dengan Tutupnya................................. 49

5.55 Memasang Tutup Shock Absorber.................................................... 50

6.1 Singel Point Injection.......................................................................... 51

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6.2 Multi Point Injection............................................................................ 51

6.3 Indirect Injection.................................................................................. 52

6.4 Direct Injection.................................................................................... 52

6.5 D-Jetronic............................................................................................ 53

6.6 L-Jetronic............................................................................................. 53

6.7 Konstruksi Dasar MPI......................................................................... 54

6.8 Basic Injection..................................................................................... 55

6.9 Sensor Aliran Udara Masuk................................................................. 55

6.10 Sensor Udara Masuk Berdasarkan Kevacuman................................. 56

6.11 Aliran Bensin ke Injector................................................................... 56

6.12 Sistem Koreksi................................................................................... 58

6.13 Kontrol Hidrolik dan Mekanik.......................................................... 60

6.14 Kontrol Hidrolik dan Mekanik.......................................................... 61

6.15 Intake Air Temperatur (IAT)............................................................. 62

6.16 Throttle Body..................................................................................... 62

6.17 Throttle Position Sensor (TPS).......................................................... 63

6.18 Konstruksinya Type IAC................................................................... 64

6.19 Fast Idle Air Control (FIAC)............................................................. 65

6.20 Idle Speed Adjusting Screw (ISAS)……………………………….. 65

6.21 Measuring Plate Type........................................................................ 66

6.22 Measuring Core Type........................................................................ 67

6.23 Sensor Temperatur Udara Masuk...................................................... 67

6.24 Heat Resistor Type............................................................................ 68

6.25 Manifold Absolute Pressure (MAP).................................................. 69

6.26 Diagram Aliran Udara 4G15 (T120SS)............................................. 69

6.27 Diagram Aliran Udara 4G15 (Maven)............................................... 70

6.28 Fuel Filter.......................................................................................... 71

6.29 Injector............................................................................................... 72

6.30 Tipe – Tipe Injector........................................................................... 73

7.1 Kanvas Kopling (Disc Clutch)............................................................. 75

7.2 Clutch Cover Assy............................................................................... 75

7.3 Release Bearing................................................................................... 75

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7.4 Clutch Release Fork............................................................................. 76

7.5 Clutch Assy.......................................................................................... 76

7.6 Posisi Kopling Terhubung................................................................... 77

7.7 Posisi Kopling Terlepas....................................................................... 77

7.8 Kedalam Paku Keling.......................................................................... 77

7.9 Backlash (Selip Balik) Disc Clutch..................................................... 77

7.10 Input Shaft Bearing(Bantalan Poros Input)....................................... 78

7.11 Periksa Clutch cover.......................................................................... 78

7.12 Periksa Clutch Release Bearing......................................................... 78

7.13 Periksa Clutch Release Shaft............................................................. 78

7.14 Kabel Kopling.................................................................................... 79

7.15 Penyetelan Pedal Kopling.................................................................. 79

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KATA PENGANTAR DAFTAR ISI_baru.doc

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