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Checking the Diff oil
Posted: Wed Oct 19, 2016 11:34 pm
by Dapplepony8
Can anyone please explain how I check and top up the diff oil?
I'm not certain that putting Titch up on 4 stands is wise and recon
You can't do this job at an angle?
Regarding axle stands, am I able to put her up on 4 and if so is it wise?
I tried recently by starting at the rear but when I started to jack
Up the front one of the rear stands started to tip,.....Abort Abort Abort!!!!
James
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 7:47 am
by oliver90owner
Use ramps? Dig a pit? Raise one end on axle stands and lower onto some wide timber supports, then raise the other end? Get someone slimmer than yourself to top off the fluid and replace the plug? Do it on a slope and just raise the rear wheels until the car is level? (Do remember to chock the front wheels properly!) Raise the bodywork and not the wheels? Run one side up on a kerb and level with an axle stand on the other side? Get someone else to do it, such as your local car repair/maintenace garage?
Think a little more laterally and you may get some inspirational ideas of your own.
RAB
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 8:59 am
by RobThomas
Drive up onto a couple of concrete blocks?
I manage to get under the car by having my wife roll it back over me. I'm not exactly supermodel thin but I can get beneath the petrol tank alright.
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 9:35 am
by ianmack
Using four stands is ok if you can use a trolley jack. When you jack for the second pair the jack should roll and avoid tilting the first pair. This requires a reasonably smooth surface so the little jack wheels can turn easily.
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 9:49 am
by ManyMinors
You're possibly overthinking it? I've never bothered about having the car completely level when checking the axle oil - it isn't as critical as the engine oil level is it.
I just raise the rear as much as I need to and top it up if required. I change it every few years. I tend to fill to slightly below the plug so as not to "overfill". This seems to have worked for me for the last 45years or so

Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 5:17 pm
by IslipMinor
James,
If you are anywhere near Oxford - pop in and put it over the pit. Takes a few easy minutes to check the rear axle oil level - PROVIDING:
• Someone has not put a later diff assembly (with no level/filler plug), into an earlier axle casing (with no level/filler plug) - the result is no level/filler plug to use!
• There is a level/filler plug available and that it comes undone reasonably easily!
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 5:26 pm
by les
Just crawl under with car on reasonably level surface, not much room but better than wasting time jacking and/or blocks. It may not be possible for people who are quite fat, in which case safer to drive all four wheels onto four bricks.
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 5:34 pm
by ianmack
Jacking isn't essential but you might as well combine oil checking with the rest of a full service and remove the wheels to adjust the brakes and grease handbrake cables and propshaft.
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 6:43 pm
by Trickydicky
I always raise mine up onto axle stands on the front chassis rails first, then raise the rear with the trolley jack under the centre of the diff, with another two under the rear axle.
Once all four wheels are off the ground and on the stands you can raise the front or the rear to the height you need.
Remember to place the car in gear and apply the handbrake BEFORE RAISING THE FRONT OF THE CAR FIRST.
Re: Checking the Diff oil
Posted: Thu Oct 20, 2016 8:34 pm
by smithskids
Trickydicky has the simple method you don't have to lift it too much. Use an allen key as a dipstick to ascertain the amount of oil.

Re: Checking the Diff oil
Posted: Mon Nov 07, 2016 9:41 pm
by Lurch
But don't drop the Allen key into the casing eh !
Re: Checking the Diff oil
Posted: Tue Nov 08, 2016 2:23 pm
by JOWETTJAVELIN
Isn't there an inspection cover under the rear seat squab or am I thinking of the larger Oxford?
Re: Checking the Diff oil
Posted: Tue Nov 08, 2016 2:29 pm
by RobThomas
Inspection cover on the Lowlight and the 1952. Might be just the early cars with the Nuffield axle and the 4.5 inch PCD.
Bl00dy handy little hole, though!
Re: Checking the Diff oil
Posted: Tue Nov 08, 2016 3:42 pm
by dalebrignall
i just use my finger as a dipstick , if the oil is just below the hole its fine .
Re: Checking the Diff oil
Posted: Mon Jan 23, 2017 9:44 am
by Dapplepony8
oliver90owner wrote:Use ramps? Dig a pit? Raise one end on axle stands and lower onto some wide timber supports, then raise the other end? Get someone slimmer than yourself to top off the fluid and replace the plug? Do it on a slope and just raise the rear wheels until the car is level? (Do remember to chock the front wheels properly!) Raise the bodywork and not the wheels? Run one side up on a kerb and level with an axle stand on the other side? Get someone else to do it, such as your local car repair/maintenace garage?
Think a little more laterally and you may get some inspirational ideas of your own.
RAB
Diff oil replaced and indeed I wasnt thinking laterally
Re: Checking the Diff oil
Posted: Mon Jan 23, 2017 9:45 am
by Dapplepony8
RobThomas wrote:Drive up onto a couple of concrete blocks?
I manage to get under the car by having my wife roll it back over me. I'm not exactly supermodel thin but I can get beneath the petrol tank alright.
All sorted Thankyou
Re: Checking the Diff oil
Posted: Mon Jan 23, 2017 9:48 am
by Dapplepony8
ManyMinors wrote:You're possibly overthinking it? I've never bothered about having the car completely level when checking the axle oil - it isn't as critical as the engine oil level is it.
I just raise the rear as much as I need to and top it up if required. I change it every few years. I tend to fill to slightly below the plug so as not to "overfill". This seems to have worked for me for the last 45years or so

All sorted now Thanks and I now have much better blacks of wood for the axle stands
Re: Checking the Diff oil
Posted: Mon Jan 23, 2017 9:51 am
by Dapplepony8
IslipMinor wrote:James,
If you are anywhere near Oxford - pop in and put it over the pit. Takes a few easy minutes to check the rear axle oil level - PROVIDING:
• Someone has not put a later diff assembly (with no level/filler plug), into an earlier axle casing (with no level/filler plug) - the result is no level/filler plug to use!
• There is a level/filler plug available and that it comes undone reasonably easily!
Sorry for the delay but I have now sorted out the diff oil and my jacking technique. It does turn out that I have a rare diff but all seems well
Re: Checking the Diff oil
Posted: Mon Jan 23, 2017 12:21 pm
by philthehill
Interested to know about your "rare diff".