Volvo B230 Valve Train Maintenance - BrickBoard · 2014. 1. 16. · Volvo B230 Distributor Shaft Seal Replacement file:///C|/Users/Steve/Documents/Volvo%20FAQ%20Updated/VolvoB230ShaftSeal/DistributorShaftSeal.html[01/13/14

Volvo B230 Distributor Shaft Seal Replacement

file:///C|/Users/Steve/Documents/Volvo%20FAQ%20Updated/VolvoB230ShaftSeal/DistributorShaftSeal.html[01/13/14 10:28:19 PM]

Volvo B230 Valve Train Maintenance

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Volvo Maintenance FAQ for 7xx/9xx/90 Cars

[Procedure and Photos by John Sargent]

I have done many distributor shaft seal replacements for myself and others. Thepicture below shows the distributor fixture, three seals which work, and twowrenches. The 8mm ratcheting box end wrench makes quick work of the threescrews holding the dap to the distributor. The 10mm ratcheting box end wrenchmakes quick work of the two bolts holding the distributor to the head. Thedistributor is the older version with the Hall Sensor and connector. Before youbegin this, make sure the distributor is mechanically sound: shaft wobbling isabnormal and indicates wear.

The next picture is rotated 90°, but it shows the distributor in the fixture (which inturn is held in a vise) and I am starting to drive out the pin which holds the drivedog to the shaft. Some of these pins are easy, and others are really tight and havefrustrated some very fine mechanics. I always use a tapered pin punch to get thepin started. You will break a straight pin punch of the highest quality on somedistributors, and you won't move the pin. I know this from experience.



The next picture shows driving the pin out the last little bit. You have to quit withthe tapered punch when it bottoms out in the drive dog.

The picture below shows the shaft after removing the drive dog. The shaft iscovered with old oil varnish. You must remove the old varnish with razor bladescaper and ScotchBrite or you break the fiber washers which cannot be purchased.



The pictures below show the shaft cleaned up and ready to be pushed out thedistributor base.

The picture below shows driving out the seal retaining washer with the taperedpunch. Note that this distributor has the earlier Hall sensor.

This seal was leaking badly!



In this picture I have the distributor base cleaned up and ready for the new seal:

After pressing the seal in with my fingers I set the seal retaining washer with asocket and a hammer. Reassemble the distributor just as you disassembled it.While Volvo calls for a new pin to be installed every time the distributor is apart,I've never used a new pin, but I've dressed a few with fine sandpaper.



[Editor] Reassemble the shaft by reinstalling the rotor side thrust washer and oiledfiber washer, then inserting from the rotor side. Install the engine side oiled fiberwasher and thrust washers. Install the drive cog with the offset cogs on the sameside of the shaft as the rotor slot. Insert the pin, then place it in a vise with thejaws between the pin and the opposite side of the drive cog. Gently press the pinhome. Center the cog. Install new lubricated O-rings.

Here is the finished product:



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Volvo Maintenance FAQ for 7xx/9xx/90 Cars