# Soal Ulangan Ulangan Bulan Mei 2010-2011

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SOAL DIFFERENTIAL

• 1.

### Berapa besarnya nilai sudut perubahan arah tenaga gerak dari kendaraan yang mempunyai system pemindah daya  Front Engine Rear Drive… ?

• A.

60 derajat

• B.

70 derajat

• C.

80 derajat

• D.

90 derajat

D. 90 derajat
Explanation
The correct answer is 90 degrees because a Front Engine Rear Drive system means that the engine is located in the front of the vehicle and the power is transmitted to the rear wheels. This configuration allows for better weight distribution and traction, especially during acceleration. When the vehicle changes direction, the front wheels will turn while the rear wheels maintain their position. Therefore, the angle of change in the direction of motion will be 90 degrees.

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• 2.

### Final gear dan Diferential gear mempunyai fungsi …..

• A.

Merubah jumlah putaran dari transmisi untuk di perkecil kembali di final gear untuk mendapatkan momen yang besar

• B.

• C.

Membedakan arah putar roda belakang (kiri dan kanan )

• D.

Membedakan kecepatan putar roda depan (kiri dan kanan)

A. Merubah jumlah putaran dari transmisi untuk di perkecil kembali di final gear untuk mendapatkan momen yang besar
Explanation
The final gear and differential gear function to reduce the number of rotations from the transmission in order to increase torque.

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• 3.

### Dibawah ini yang bukan pemindah daya yang sering digunakan pada kendaraan…

• A.

Mesin Depan Penggerak Belakang (Front Engine Rear Drive)

• B.

Mesin Depan Penggerak Depan (Front Engine Front Drive)

• C.

Mesin Belakang Penggerak Depan (Mid Ship Engine Front Drive)

• D.

Mesin Penggerak 4 Roda (Four Wheel Drive)

C. Mesin Belakang Penggerak Depan (Mid Ship Engine Front Drive)
Explanation
The correct answer is "Mesin Belakang Penggerak Depan (Mid Ship Engine Front Drive)". This option states that the engine is located at the rear of the vehicle and drives the front wheels. However, this configuration is not commonly used in vehicles. Most vehicles either have a front engine rear-wheel drive, front engine front-wheel drive, or four-wheel drive.

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• 4.

### Dilihat dari konstruksinya kelemahan dari mesin depan penggerak belakang adalah :

• A.

Letak differensial-nya jauh dari mesin sehingga membutuhkan batang penghubung (propeller shaft).

• B.

Letak differensial-nya menyatu dengan transmisi sehingga tidak memerlukan propeller shaft.

• C.

Ruang bagasi lebih luas.

• D.

Konstruksi chasis lebih rendah

A. Letak differensial-nya jauh dari mesin sehingga membutuhkan batang penghubung (propeller shaft).
Explanation
The correct answer is that the weakness of a front-engine rear-wheel drive car is that the differential is far from the engine, requiring a propeller shaft to connect them. This means that there is an additional component that can potentially fail or require maintenance, and it also adds weight and complexity to the drivetrain system.

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• 5.

### Kendaraan jenis penggerak roda depan, unit final drivernya menggunakan ….

• A.

Type Helical gear

• B.

Type hypoid bevel gear

• C.

Type Spiral bevel gear

• D.

Type Pinion gear

A. Type Helical gear
Explanation
The correct answer is Type Helical gear. Helical gears are commonly used in vehicles with front-wheel drive. They have angled teeth that gradually engage, resulting in smoother and quieter operation compared to other gear types. The helical gear design also allows for a higher load-carrying capacity, making it suitable for the final drive unit in front-wheel drive vehicles.

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• 6.

• A.

Differential case

• B.

Drive pinion shaft

• C.

Side gear

• D.

Whell

A. Differential case
Explanation
The differential case is the component that functions as the support for the ring gear. It holds the ring gear in place and allows it to rotate smoothly. The drive pinion shaft is responsible for transmitting power from the engine to the differential. The side gear is connected to the axle shafts and allows for power distribution to the wheels. The wheel is the component that makes contact with the road surface and allows the vehicle to move.

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• 7.

### Berikut ini adalah langkah pertama membongkar differential case….

• A.

Melepas pinion shaft

• B.

Melepas dua pinion gear

• C.

Melepas batang pin ( straight pin)

• D.

Melepas oil seal dan oil slinger

C. Melepas batang pin ( straight pin)
Explanation
The given correct answer suggests that the first step in dismantling the differential case is to remove the straight pin (batang pin). This implies that the straight pin is holding some components together and needs to be removed before further disassembly can take place.

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• 8.

### Alat ukur yang digunakan untuk  mengukur keolengan (run out)  differential adalah…

• A.

Vernier caliper

• B.

Micrometer

• C.

Dial Test Indicator

• D.

Fuller gauge

C. Dial Test Indicator
Explanation
A dial test indicator is used to measure the runout or eccentricity of a differential. It is a precision instrument that has a dial face with a needle that moves as the differential rotates. The needle indicates any deviation from the true center, allowing for accurate measurement of runout. Vernier calipers and micrometers are commonly used for measuring dimensions, while a fuller gauge is used for measuring the depth of holes. Therefore, the most appropriate instrument for measuring runout in this context is a dial test indicator.

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• 9.

### Hal penting dalam melepas ring gear dan differential case adalah….

• A.

Memberi pelumas setelah komponen yang telah di bongkar

• B.

Memberi tanda bearing cap agar tidak tertukar

• C.

Meletakan semua komponen dalam satu tempat

• D.

Membersihkan komponen yang akan dilepas terlebih dahulu

B. Memberi tanda bearing cap agar tidak tertukar
Explanation
When removing the ring gear and differential case, it is important to mark the bearing cap to prevent it from being mixed up or swapped with another one. This is crucial because each bearing cap is specifically designed and fitted for a particular position in the differential case. Swapping or mixing them up could lead to improper installation and potential damage to the differential system. Therefore, marking the bearing cap helps ensure that it is reinstalled in its original position during reassembly.

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• 10.

### Gesekan yang tidak normal yang mengakibatkan keausan dan akan menyebabkan jarak kebesaran antara ring gear dengan drive pinion pada differential sering juga di sebut…

• A.

Over size

• B.

Under size

• C.

Run out

• D.

Back lash

D. Back lash
Explanation
Backlash refers to the excessive clearance or play between two mating components, in this case, the ring gear and drive pinion in a differential. This abnormal friction can lead to wear and tear, causing an increase in the distance between the ring gear and drive pinion. Therefore, the correct term for this phenomenon is "backlash."

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• Mar 21, 2023
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• May 24, 2011
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