Ford carburettor Pierburg 2V dismantling and reassembly - is a part of Ford repair manuals: Fuel and exhaust syatems. This part contains the detailed description of dismantling and reassembly carburettor works and all necessary diagrams for Ford carburettor Pierburg 2V.
Ford carburettor Pierburg 2V dismantling and reassembly:
- check the cost and availability of spare parts before deciding to dismantle the carburettor; if the unit has seen much service, fitting a new or reconditioned carburettor may prove more satisfactory than any attempt at overhaul;
Exploded view of Ford carburettor Pierburg 2V:
A - bi-metal housing;
B - o-ring;
C - water jacket;
D - pull-down diaphragm unit;
E - secondary throttle diaphragm unit;
F - idle speed adjustment screw;
G - accelerator pump diaphragm;
H - power valve;
J - throttle damper;
K - carburettor body;
L - fuel inlet pipe and filter;
M - primary main jet;
N - secondary main jet;
O - top cover;
P - idle jet.
- obtain a carburettor repair kit, which will contain the necessary gaskets, diaphragms and other renewable items;
- with the carburettor removed from the vehicle, clean it thoroughly externally and place it on a clean worksurface;
- referring to the exploded view of the carburettor, remove each component part whilst making a note of its fitted position; make alignment marks on linkages etc.;
- reassemble in the reverse order to dismantling, using new gaskets, O-rings etc.;
- to check the choke pull-down after reassembly, position the fast idle screw on the highest step of the cam;
- press the pull-down adjusting screw towards the pull-down diaphragm and measure the choke valve opening with a twist drill or gauge rod of the specified diameter;
- adjust if necessary using a 2 mm Allen key;
Ford carburettor Pierburg 2V - throttle damper adjustment:
A - actuating lever;
B - damper plunger;
C - damper locknut;
D - feeler blade.
- after refitting the throttle damper, adjust its position in the bracket so that with a 2 mm (0.08 in) feeler blade inserted between the idle speed adjusting screw and the throttle lever, the damper plunger is just touching the actuating lever;
- adjust the idle speed and mixture, and if necessary the fast idle speed, after refitting the carburettor;
- recheck the throttle damper adjustment, when applicable.
Ford carburettor Pierburg 2V fast idle adjustment:
- this is not a routine operation. It should only be necessary after overhaul, or when a new carburettor is fitted;
- the idle speed and mixture must be correctly set and the engine must be at operating temperature;
- with the engine running, position the fast idle screw on the second highest step of the fast idle cam;
- measure the engine speed and compare it with that given in the specifications;
- if adjustment is necessary, remove the tamperproof plug from the fast idle screw by crushing it with pliers;
- stop the engine and open the throttle to gain access to the screw with a small screwdriver;
- turn the screw a small amount clockwise to increase the speed, anti-clockwise to reduce it, then reseat the screw on the second highest step of the cam and recheck the engine speed;
- repeat as necessary;
- fit a new tamperproof cap where this is required by law, then refit the air cleaner.
Read more: Ford carburettor diagrams
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