Removing and installing high-pressure pump

Removing

• Engine cold.

• Remove high-pressure pipe ⇒ 7.3 Removing and installing high-pressure pipe.

• Disconnect electrical connector -1-.
• Place a cloth underneath to catch escaping fuel.
• Release hose clip -2- and detach fuel supply hose.
• Unscrew bolts -3- and detach high-pressure pump with roller tappet.

Installing

• Check roller tappet for damage and renew if necessary.
• Moisten roller tappet -1- with clean engine oil.

• Insert oiled roller tappet -1- into camshaft housing.

• Turn crankshaft in direction of engine rotation until roller tappet is at bottom dead centre.
• Insert new, lubricated O-ring -2- in groove of high-pressure pump -3-.
• Tighten bolts by hand.
• Tighten bolts in diagonal sequence to specified torque.
• Note that there are different types of high-pressure pump ⇒ 7.1 Assembly overview - high-pressure pump.

Variante 1 - ⇒ 7.1.1 Assembly overview - high-pressure pump, version 1

Variante 2 - ⇒ 7.1.2 Assembly overview - high-pressure pump, version 2

Variante 3 - ⇒ 7.1.3 Assembly overview - high-pressure pump, version 3

• Check fuel system for leaks.