COPYRIGHT WARNING:
All pictures and texts in this web page are the property of nomaallim.com. Any use of any part of those contents without the written consent of nomaallim.com shall be subject to legal procedures as per international and local laws in the concerned country. Using the name "nomaallim" or "nomaallim com" or "nomaallim.com" in the text describing the unauthorized copied content shall not constitute an exception and shall be sanctioned in accordance to the effective laws and proceedings.
All pictures and texts in this web page are the property of nomaallim.com. Any use of any part of those contents without the written consent of nomaallim.com shall be subject to legal procedures as per international and local laws in the concerned country. Using the name "nomaallim" or "nomaallim com" or "nomaallim.com" in the text describing the unauthorized copied content shall not constitute an exception and shall be sanctioned in accordance to the effective laws and proceedings.
BEFORE YOU START
|
The below works concerned a Bosch distributor equipped with a Hall effect switch and fitted on a Simca / Talbot / Matra / Poissy engine. Dismantling different makes and versions remains highly similar.
|
DISCLAIMER:
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
Method 1: Hall effect sensor removal without the distributor rotor
Using snap ring pliers remove the first snap ring that holds the metal drum of the hall effect switch.
It could have been fitted with a thin washer beneath make sure to collect it before attempting to pull out the drum.
It could have been fitted with a thin washer beneath make sure to collect it before attempting to pull out the drum.
Remove the 3 screws that hold the Hall sensor and take out the Vacuum canister to make the next steps easier:
|
You can now take out the drum.
The below shows how to use pliers and a hammer to extract the drum. Start by removing the snap ring below the drum by pushing it down the shaft and leaving it where it reaches. Fit your pliers in a manner to hold the bottom of the drum and the top of the shaft (left). Hit on your pliers with a hammer. Make sure to collect the small pin that holds the drum onto the shaft (right). |
|
|
|
Remove the snap ring which you had lowered earlier and the pin of the wires holder.
Pull out the wires holder and take out the Hall effect switch.
Pull out the wires holder and take out the Hall effect switch.
|
You can now easily access the centrifugal advance springs and remove them in case they need to be replaced.
|
|
|
If you remove the screw on top of the rotor, you can take out the distributor rotor and reach the distributor shaft as shown in this picture.
Clean your distributor with WD40 which you can spray directly on the centrifugal timing advance mechanism. Be careful to the small holes at the bottom of the distributor which will drain the WD40 out. Work over a plastic bowl or box. |
Buy your distributor or distributor parts from our partners' stores:
![](http://ae01.alicdn.com/kf/H282573865a724b338f97af44df3815d5a.jpg_140x140.jpg") |
![](http://ae01.alicdn.com/kf/S952bbd59ac374d68a0176dcb22f23696B.jpg_140x140.jpg") |
![](http://ae01.alicdn.com/kf/Sb27bd3472791417fadedfc7838514b60C.jpg_140x140.jpg") |
![](http://ae01.alicdn.com/kf/S8c90acb45b80441da38b1002eefac512W.jpg_140x140.jpg") |
![](http://ae01.alicdn.com/kf/H0dbff84a06334c7d93593895300d7ce9Z.jpg_140x140.jpg") |
![](http://ae01.alicdn.com/kf/H86d5985c617e46c6bf79a56f41917d3bF.jpg_140x140.jpg") |
Alternative method: taking out the whole distributor rotor
|
Remove the only screw that holds the rotor to the distributor shaft. Use grip pliers to hold the distributor shaft on the opposite side.
|
|
Unscrew and remove the vacuum advance canister as shown in Method 1.
Remove the lower distributor window cap (left) with a screw driver or any curved sharp tool (middle left).
Rotate the distributor by hand until you see the centrifugal advance spring (middle right)
Release the spring from its holder (right). Do so for both springs.
Remove the lower distributor window cap (left) with a screw driver or any curved sharp tool (middle left).
Rotate the distributor by hand until you see the centrifugal advance spring (middle right)
Release the spring from its holder (right). Do so for both springs.
Pull out the complete rotor with the Hall effect pulse generator still assembled on it.
Take care not to drop one of the centrifugal advance timing springs in case it comes out with the rotor (usually only one would come out, the other spring remains attached to the mechanism at the bottom of the distributor).
You can then remove the Hall effect switch as shown in Method 1.
Take care not to drop one of the centrifugal advance timing springs in case it comes out with the rotor (usually only one would come out, the other spring remains attached to the mechanism at the bottom of the distributor).
You can then remove the Hall effect switch as shown in Method 1.
Distributor reassembly
|
Reverse the above steps for reassembling the distributor.
Don't forget to : -Refit the wires holder pin. -Put a drop of oil on the rotor shaft. -Refit the felt cap on the rotor shaft. |
|
Testing the distributor prior to mounting it to the car
Power up the Hall effect switch from a battery.
The Hall generator has 3 wires, one to the battery + terminal, one to the battery - terminal and one to the output signal.
Connect an oscilloscope, select 500mV peak-to-peak, and 200ms scales.
Rotate the distributor by hand (let it spin freely as much as you can) and observe the generated pulses.
The Hall generator has 3 wires, one to the battery + terminal, one to the battery - terminal and one to the output signal.
Connect an oscilloscope, select 500mV peak-to-peak, and 200ms scales.
Rotate the distributor by hand (let it spin freely as much as you can) and observe the generated pulses.
See also...
|
|
|