Group 23 Fuel System

General

IMPORTANT! Ensure maximum cleanliness when working with the fuel system. Always clean the engine before starting repair work. To prevent contamination of the fuel system, always install protective plugs when connections are removed. Parts removed should be kept in a closed plastic bag until they are reinstalled.

IMPORTANT! If the engine is turned over using the starter, for valve adjustment, for example, first disconnect the cables at the junction boxes for the engine control system and turn the ignition key to “0” to avoid any risk of accidentally starting the engine. Check the wiring diagram to be sure that the correct cables are disconnected. See “Instructions for running on starter”. NOTE: For specifications, see “Technical Data, TAD1240GE, TAD1241GE/VE, TAD1242GE/VE and TWD1240VE”.

Instructions for working with electronic fuel injection

•Never remove the control module connectors or any electrical cable from the sensors when the engine is running. The ignition key should be in the “0” position and the engine stopped.

•Never disconnect any battery cables when the engine is running.

•Disconnect the control module connector from the control module when doing any electrical welding work on the engine.

NOTE: The main power must be turned off before the connectors are disconnected.

•Only batteries should be used for starting. Starter packs can cause voltage surges and damage the electronics.

•For quick battery charging, disconnect the battery cables. (This does not apply to normal maintenance charging.)

•If any connectors are disconnected, be sure that they are reconnected properly and that they are free from oil and other contamination which can cause poor contact.