Engine air filter replacement

リペアコミュニティに参加 - アカウントの作成

はじめに

Applicable to all engines (H4D and H4Bt).

Replace every: 20,000km or year. It should be replaced earlier if driving in dusty environments.

A clogged engine air filter may impact fuel economy: it will create more resistance and therefore, increase the pumping losses.

Note: recommendations are given according to the French RTA's (Revue Technique Automobile) maintenance plan, matching Smart 453's maintenance plan in this case.

必要な工具と部品

手順1 Accessing the engine hood

Engine air filter replacement, Accessing the engine hood: 手順 1、 1の画像 1

Open the trunk.
Remove the trunk carpets.

翻訳

手順2 Acessing the engine compartment

Engine air filter replacement, Acessing the engine compartment: 手順 2、 1の画像 1

Unscrew the 6 screws by hand or with a T50 socket.
Lift and set aside the engine hood.

翻訳

手順3 Disassembling the airbox

Engine air filter replacement, Disassembling the airbox: 手順 3、 2の画像 1

Engine air filter replacement, Disassembling the airbox: 手順 3、 2の画像 2

Unscrew the 2 Torx T25 screws.
Disglog the air filter lig by slightly pushing/pulling it forward then lifting it.

翻訳

手順4 Replacing the air filter

Extract the used air filter.
Dust off the air box from any debris residing in it.
Optionnal but recommended: proceeed to a throttle body, MAP sensor and air manifold thermometer cleaning (see other tutorials).
Install the new air filter.