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Date:         Mon, 12 Oct 2009 11:34:29 -0700
Reply-To:     Jeffrey Vickers <jeff@VICKERSDESIGN.COM>
Sender:       Vanagon Mailing List <>
From:         Jeffrey Vickers <jeff@VICKERSDESIGN.COM>
Subject:      Re: diff lock woes
In-Reply-To:  <>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

Are you sure its not engaging when driven? Sometimes it takes a while to engage. You've got to get the front and rear to turn at a different rate - like going into a corner.

If the pin in the tranny is free and the actuator is moving in and out (which means you have proper vacuum) then it should engage with a little corner-turning.

Someone else will have to chime in regarding the light circuit. I assume the circuit gets closed (light goes on) when the actuator is moved forward, but not until full engagement I would think.


On Oct 12, 2009, at 10:06 AM, Automatic digest processor wrote:

> Date: Mon, 12 Oct 2009 09:55:42 -0700 > From: Bruce Todd <beeceetee@GMAIL.COM> > Subject: diff lock woes > > Okay - not to stretch this email into a long winded tale...I had my > motor > out of my 86 syncro westy this past summer to have a number of repairs > completed. The main repair was to have the head gaskets replaced as > I was > having overheating issues. With the motor out, it was checked > thoroughly > for wear and then the top end was partially rebuilt. At the same > time I > replaced brake-lines, ps lines, ps pump, gas tank straps, coolant > hoses, > fuel lines and a few other odds and ends. I now have a stronger > running > motor that doesn't leak coolant or oil and idles very nicely. I > also feel > relatively more confident when taking my young family on longer trips. > > Since buying the van several years ago, the rear diff lock has > always been > seized. Here was my opportunity to get this fixed with everything > else when > the motor was removed. The mechanic unseized the locking pin and > put it all > back together telling me that it took minimal pressure to engage the > lock. > This was all theoretical as when it came time to road test - the > diff lock > wouldn't engage. The mechanic told me to return when his shop was > less busy > and he would work on it some more. What does work is the green > indicator > dash light which permanently stays on once the vehicle starts > whether the > diff is locked or unlocked. > > Twice I've taken off the actuator to check whether it works when I > engage > the dash knob and it does. Pulling out the knob elongates the stem of > the actuator...pushing the knob in, contracts the stem. The diff > lock has > worked with the van on a hoist with the tires off the ground slowly > being > rotated and the locking pin being pushed with the actuator and with > the help > of a pry bar. > > Yesterday I crawled under the van to unplug the wires which connect to > indicator light switch - which is located above the actuator. Even > with > the plug disconnected the green dash light was still on. Does this > mean > that the diff lock pin is partially engaged or is there something else > occuring? Why would the light stay on if the plug is disconnected? > > This pretty much is the last thing that doesn't work on my van - and > I'd > love to get it working. Any words of wisdom would be most > appreciated. > > Thanks > > BT

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