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LT77 gearbox filler stuck and won't come off


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With the crunch I am getting from my gearbox, it is obvious I need to change the transmission oil. So out comes the 1/2" spanner. Won't budge. get a 12 point socket on it - won't budge. Liberal soaking in WD40, rip up the driver side floor to get better access - no joy. invert a 1/4" torx bit in my drill - lots of smoke, no joy. Blow torch and steady pressure - scary but otherwise uneventful. Finally some pipe-freeze spray - nope.

Getting a bit bored with this now. I'm spending a lot of free time studying a 1/2" square plug that seems to be toying with me. The little bugger.

Before I roll the truck into my local garage and ask them to "just make it work", are there any other suggestion? Is it time I dug deep and bought an impact wrench? If so, which one?

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Hi, I changed the oil in my LT77 for the first time a while ago (November) - the first time the truck was in my posession I hasten to add! , I recall the filler being very very tight, I had to hang on the spanner, almost dragging myself across the garage floor!, actually, I had to brace my foot against the rear X-member to stop myself from sliding. if I were you, I'd get a pair of theose latex palmed, knitted gloves, wrap the end of the spanner in a rag and go for it, if you break your spanner, you can always buy another! not sure how you'd go about getting a windy gun on the cap either.... good luck!

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Try a breaker bar, or a long bit of scaf bar on the 1/2 inch t-wrench. Don't do it on the wratchet! If nothing, as they say on the rig, "if in doubt, give it a clout" try a bit of shock therapy with a persuader.

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Jad - Yep. When I first started to struggle with it, I gave it a good clean to read the thread, just to be doubly sure.

Ross/Reb - Not the first time I've heard that advice, come to think of it. I'll get out the cutlery.

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  • 1 month later...

Just to round this one off and close it....

Had to eventually give in and run it to the local Land Rover specialist. They scoffed a little when I pointed out the plug and two of the mechanics in turn had a crack at it in a fit of bravado. Neither managed it - which to be honest made me a bit relieved as otherwise I would have looked a right berk.

Up on the ramps. Long socket arm and the burly chap literally hanging off the end, jumping up and down. Eventually with a screech that could wake the dead, it turned. I got him to just loosen it and drove home. Fluid all changed. Feels like a new gearbox.

He also noticed that my left front swivel seal had gone, chucking one-shot all over the place. I'm not even going to think about doing that myself.....

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Why not - I did both of mine on my old 90 last year, first time I'd been inside a hub. First one took all day, second one was all done and dusted by afternoon tea on day two. You do get nice and messy but it's actually rather good fun to see it in so many bits. The toughest job was getting the swivel ball off, damn those bolts were tight!

I did stuff up one oil seal which very quickly wrote off a set of nearly new brake pads with one shot all over a brake disc - but it was a learning experience.

Dave.

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