Ever wondered how the land rover series selectable 4 wheel drive works? I thought I had a good idea until I stripped one down and started to rebuild it.
The low/high ratio part is nice and easy, the lever slides a pair of gears on a splined shaft to mesh with gears on a the intermediate shaft in the transfer box.
But what about 2wd/4wd?
This is more tricky to describe - I'll try to post some pics or diagrams soon, a picture painting a thousand words and all that.
Low 4wd,
The hi/lo lever (the one with the red button:->)when moved back for low also pivots a small link the other end of which moved forward sliding a shaft on which is the dog clutch, engaging the front output shaft.
Hi 4wd
This is the clever part, the pivot point for the link which operates the dog clutch shaft is actually the pin operated by the yellow button. Pushing the yellow button withdraws the pin from the center of the link, making it no longer pivot, now when the red lever is forward, the spring on the dog clutch shaft forces it to engage the dog clutch.
This is why to get out of 4wd Hi, you have to move the red lever, this moves the link until the point where the spring on the yellow button rod pushes the pivot pin back in.
Confused. Hopefully some diagrams soon.
Showing posts with label gearbox. Show all posts
Showing posts with label gearbox. Show all posts
Friday, 11 April 2008
Wednesday, 9 April 2008
First in a long line (hopefully)
So here we are then, edging into the 21st century!
I've decided to record what I get up to in my workshop, since I spend a good deal of my "free" time there, and I often want to refer back to what I've done.
Mostly my time is spent working on my Land Rover. It's a 1953 80" wheelbase series one.
I've owned it for nearly 10 years, and I finally got it on the road last year. You can see it below
Currently I'm re-building a spare gearbox to replace the current one, which is very noisy, at all speeds in all gears!
So far I've rebuilt and reassembled the front output housing and transfer selectors. I need to fix the Hi-Low ratio selector which is very stiff, however next I'll be working on the main gearbox.
You (dear reader, if there are any still with me) can expect most posts to be about land rovers, with occasional forays into DIY, steam engines and anything else I think worth committing to paper.
I've decided to record what I get up to in my workshop, since I spend a good deal of my "free" time there, and I often want to refer back to what I've done.
Mostly my time is spent working on my Land Rover. It's a 1953 80" wheelbase series one.
I've owned it for nearly 10 years, and I finally got it on the road last year. You can see it below
Currently I'm re-building a spare gearbox to replace the current one, which is very noisy, at all speeds in all gears!
So far I've rebuilt and reassembled the front output housing and transfer selectors. I need to fix the Hi-Low ratio selector which is very stiff, however next I'll be working on the main gearbox.
You (dear reader, if there are any still with me) can expect most posts to be about land rovers, with occasional forays into DIY, steam engines and anything else I think worth committing to paper.
Subscribe to:
Posts (Atom)
