How To Install Points And Condenser
The contact-billow setting is often neglected, simply it is vital to good running. Ideally, cheque and prepare the gap, between every major service, and supplant the contact billow afterwards vi,000 miles or 10,000 km, or twice a year.
Current passing through the contacts burns away 1 of them and deposits a elevation of metal on the other.
The contact heel which is moved by the distributor cam wears abroad, preventing the points from opening fully.
Somewhen they stay airtight, immobilising the car. Points burn down away faster if the condenser is faulty (Come across Checking the low-tension circuit ). As a temporary measure you tin can, using cracking intendance, file points to restore their apartment faces, just it is difficult to get exactly the right profile, and so replace the whole gear up as before long as you lot tin.
Generally you tin can practise this job with the distributor in identify; but in cars with poor access you may have to remove information technology (See Removing and refitting the distributor ).
General Method of removing the points
Verbal details vary from type to blazon; but on all types brainstorm past removing the distributor cap , which is held on past jump clips or screws.
Information technology may exist necessary to lift off the rotor arm and dust shield.
Cap held by screws
Next, disconnect the wiring at the contact-breaker terminal post: there is one lead from the condenser and one from the gyre . Connections may be a press-on fit or held by nuts. Disengage the spiral or screws belongings the assembly and lift it off.
The contact faces of the new points may exist covered by a protective coating. Wash it off with petrol or paraffin, and dry.
Fit the new points, but do non tighten the screws fully if the assembly slides to adjust the gap. Tighten them a little more than finger-tight, and so you can lever the assembly with a screwdriver. Reconnect the wiring. Set the gap.
Setting the contact gap
The correct setting for the points is given in the car handbook or workshop manual.
Turn the crankshaft pulley in the direction of the engines normal rotation with a spanner or socket wrench, until the contact heel is on the tip of i of the benefactor cam lobes , so that the contact-breaker points are fully open.
Alternatively, put the car in top gear and push it forwards a short distance until the point open.
Removing the sparkplugs eases the job of turning the engine past relieving the pressure in the cylinders .
Place the correct size feeler-gauge blade between the points to measure the gap.
On most types y'all tin can suit the gap by freeing the fixing screw and sliding the entire associates, or sometimes merely i contact, effectually a pivot; some types take a special adjusting screw.
Push the sliding type with a thin screwdriver blade rotating in its adjusting slot, or but suit the spiral, until y'all feel that the points offer a slight resistance to the feeler.
Tighten the fixings and re-check the gap in case information technology has changed (you practise not demand to exercise this for a spiral aligning)
Smear a little high-melting-point grease on the cam lobe. If there is an oiling pa, give this a few drops of calorie-free oil. As well put a drib of light oil on the moving contact pivot.
If you have a dwell meter bank check the dwell angle.
Contact breaker with points fully open up. The gap shown is exaggerated for clarity.
Place the feeler estimate bract between the points, and a screwdriver blade in the adjusting slots.
Tighten the fixing screw, then check that points gap remains the same.
Contact breaker types
Lucas — quondam and new type
On the sometime type, unscrew the nut, at the free end of the spring, using pliers or a pocket-size spanner.
Elevator off the peak nylon insulator and the two terminals underneath information technology, noting the sequence in which the diverse parts are positioned - particularly the insulating washers.
Remove the single screw adjacent to the terminal mail service. Lift off the assembly.
Fit the new associates in exactly the opposite gild.
Set the gap by levering with a screwdriver blade in the adjusting slot.
On the newer jumpsuit type the concluding plate simply lifts off.
Showtime gently take some of the pressure off the spring then lift out the terminal plate with the leads still attached to information technology.
Fit the i-piece contact over the pin post and supercede the depression-tension (LT) leads over the insulated base of the contact set. Secure with the plastic nut.
Marelli
Remove the nut from the terminal post on the side of the distributor, and the main fixing screw of the assembly.
Pull the plastic final cake upwards and off its mounting bracket, and detach the gratis stop of the spring.
Remove the circlip over the contact pivot and lift off the diverse parts, noting the order in which they are fitted.
When reassembling remember to re-attach the lead from the condenser.
Bosch
Disconnect the lead from the terminal on the side of the unit.
Gently press the spring, complimentary information technology from the superlative on the lower function of the assembly and lift off consummate with moving contact.
Remove the screw retaining the fixed contact and lift off the contact.
When reassembling, fit the new stock-still contact point over the peg on the baseplate and refit the screw. Fit the LT lead to the peg on the plastic clip, and fit the new moving point.
Nippon Denso
Loosen the two nuts on the concluding on the side of the benefactor and disassemble the pb. Remove the two principal fixing screws.
Lift off the old assembly, fit the new one and reconnect the lead. The gap is adapted by swinging the assembly around the moving contact pivot point.
Mitsubishi
Loosen the screw holding the earthing lead from the contact set up to the distributor torso, and then pull the lead clear. Remove the two fixing screws with their washers and spring washers. Lift off the associates.
When fitting the new ane, notation the small lug on the bottom which fits into a hole in the distributor. Refit the earthing lead to the furthest abroad of the two fixing screws. Refit the condenser lead and tighten its spiral.
Fix the gap by slackening the slot-headed spiral behind the fixed contact and rotating the Five-notched adjuster with a screwdriver.
AC Delco
There are two types: one has the normal layout, only the other has the centrifugal advance weights higher up the points.
On the offset blazon, press the spring of the moving bespeak to release the terminals, and elevator them out.
Remove the fixing screw, elevator off the assembly and fit the new one.
On the 2d type, loosen two screws to free the rotor arm.
Hold the arm meanwhile, then lift off complete with the screws and so equally not to drop them - this allows access to the contact set.
Press the spring of the moving point with a screwdriver bract to release the leads, then slide them off: i upwardly and the other sideways.
Remove the fixing screws and spring washers to release the assembly: yous may need to turn the engine to move the weights out of the style.
There is a slot for levering with a screwdriver to suit the gap.
Motorcraft
Disconnect the 2 leads by releasing the crosshead screw at the contact-breaker terminal.
Remove the 2 screws property the contact-breaker set up to the benefactor baseplate and lift off the old assembly.
Fit the new one, re-attach the leads and retighten their spiral.
Ducellier
Loosen the terminal nut on the side of the benefactor body, and release the slotted cease of the moving contact spring.
Remove the small spring prune beyond the terminal and pivot posts and lift off the washers.
Elevator the moving contact off the pin post. Release the stock-still contact securing screw and lift off the contact.
Spiral on the new fixed contact; do not tighten its screw fully. Fit the moving contact, washer and spring prune, slot dorsum the contact spring and tighten the terminal nut.
Ready the gap past moving the stock-still contact plate with a thin screwdriver. Lubricate the cam spindle .
Source: https://www.howacarworks.com/ignition-system/fitting-and-adjusting-contact-breaker-points
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