Pump Injector Unit O-Ring

WARNING: This page is about a different car, the 2006 Volkswagen Jetta and 2005 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Assembly sleeve T10056

Removing

-- Remove the pump injector unit, refer to PUMP INJECTOR UNIT .

-- Pry off old O-rings from pump injector unit extremely carefully.

-- Above all, make sure that no burrs develop at O-ring seat.

Installing

NOTE:

Always use assembly sleeves for installing O-rings. Not using them may cause the O-rings to be damaged during installation.

O-rings without distinguishing color markings are gradually introduced. Ensure the correct allocation of O-rings to grooves: ring strength decreases in direction toward injector.

Avoid rolling movements when sliding on O-rings. O-rings must not be twisted on itself in the seat of Pump-Injector Unit.

-- Pull off heat protection seal together with securing ring.

-- Clean seating surfaces for O-rings on pump injector unit very carefully.

-- Insert assembly sleeve T10056/1 up to stop on pump injector unit.

Fig 1: Identifying Assembly Sleeve T10056/1

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Slide the upper, thicker O-ring carefully on assembly sleeve and into seat of pump injector unit.

-- Remove assembly sleeve.

-- Insert assembly sleeve T10056/2 up to stop on pump injector unit.

Fig 2: Identifying Assembly Sleeve T10056/2

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Slide the center, thinner O-ring carefully on assembly sleeve and into seat of pump injector unit.

-- Remove assembly sleeve.

-- Insert assembly sleeve T10056/3 up to stop on pump injector unit.

Fig 3: Identifying Assembly Sleeve T10056/3

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Slide the lower O-ring carefully on assembly sleeve and into seat of pump injector unit.

-- Remove assembly sleeve.

-- Slide on a new heat protection seal together with securing ring.