Thread: Recalls and service memos:incorrect jack fitted

How does this work?

My assumption is that the original top of the stem is removed (as per the instructions shown in the link to LR3 Disco) and that leaves a stem that the washer goes over and which can then be inserted into the chassis rail hole that is recommended by LR. Or am I missing the point altogether.

It sounds like a viable alternative to the custom made jack Andrew purchased.

Decisions, decisions!!!

Martin

Originally Posted by letherm

How does this work?

My assumption is that the original top of the stem is removed (as per the instructions shown in the link to LR3 Disco) and that leaves a stem that the washer goes over and which can then be inserted into the chassis rail hole that is recommended by LR. Or am I missing the point altogether.

It sounds like a viable alternative to the custom made jack Andrew purchased.

Decisions, decisions!!!

Martin

I'm not sure, but from the description it sounds like you just remove the saddle from the post of the sprinter jack and the put this washer and pin in. I think the washer just stops the post from dropping back into the body of the jack and I assume all the weight of the vehicle just sits on top,of the post.

If that's the case I m not sure about that, the car was designed to be jacked from the bottom of the chassis rail on the hips of the Jack post with a hole and pin to locate the jack securely, not to be jacked from whatever the post sits on inside the hole.

Originally Posted by letherm

How does this work?

My assumption is that the original top of the stem is removed (as per the instructions shown in the link to LR3 Disco) and that leaves a stem that the washer goes over and which can then be inserted into the chassis rail hole that is recommended by LR. Or am I missing the point altogether.

It sounds like a viable alternative to the custom made jack Andrew purchased.

Decisions, decisions!!!

Martin

Can anyone post a link to the Mercedes Sprinter jack please,

I have to confess that I am not yet sure how the washer adaptation will engage the chassis. I'll report back when I have received and fitted it.

A link to the sprinter jack. It varies, but this should get you started.
http://www.aulro.com/afvb/d3-d4.../1...ny-good-2.html

The washer arrived a week ago and I have tried it out with my Sprinter jack.
It is very straight forward to remove the original top jack fitting by knocking out the pin that retains it. The new washer is quite thick (for strength) and it fits loosely over spindle on top of the jack. The exposed spindle fits easily into the chassis rail holes where the jack is supposed to go. The washer distributes the load.

This seems much less likely to slip than the old Sprinter top.

The retaining clip is used for storage. It keeps the washer in place and stops the shaft from falling down into the jack. The clip is removed before jacking as it would be crushed between the washer and the chassis rail.



The first picture shows the washer with the retaining clip in place. It is easy to remove ready to jack the car.



The second picture shows the jack ready for use. I was surprised that the top still fits into the chassis hole. It even has some "slack" to allow for uneven ground and changes in angle as the car is raised.

The top of the jack looks like it has been machined down to suit.
I will soon have an a adapter to suit 28mm top jacks.
See the adaptor thread.
Andrew

Originally Posted by Fred Nerk

The retaining clip is used for storage. It keeps the washer in place and stops the shaft from falling down into the jack. The clip is removed before jacking as it would be crushed between the washer and the chassis rail.

What stops the shaft from falling down into the jack when it's being used and the clip is not there to hold it in place?

Martin

What stops the shaft from falling down into the jack when it's being used and the clip is not there to hold it in place?

Martin

The shaft falls slowly due to the nature of hydraulic jacks and only when you turn the valve to allow it. The idea is that you turn the valve and stop the shift going too low and into the jack. Fit the clip again, then let the shaft drop to the position used for storage. It is very easy.

I admit that I do not know what happens if you allow the shaft to fall down into the jack. It might just pump up again or it might be a major problem to extract. It is quite straight forward to avoid finding out.

The top of the jack looks like it has been machined down to suit.
I will soon have an a adapter to suit 28mm top jacks.
See the adaptor thread.
Andrew

I am sure it is a lucky coincidence that the top of the shaft of the Sprinter jack is the perfect size for the holes in the chassis rails. The washer ensures the load is transmitted to the same surface as the original fitting would have done. This solution is only suitable for a shaft similar to the Sprinter jack.