Can Rear Diff be filled without removing anything

04SilverSerpent · Dec 30, 2020

I need to top off my rear differential fluid so I can drive it so it can be resealed...can I fill it up without removing anything other than the bolt where you refill at?
Thanks

MG0h3 · Dec 30, 2020

Nothing needs to be removed but if I recall, you need to snake a hose up there. Been quite a few years

You must be leaking really bad or for a long time to need to top it off?

04SilverSerpent · Dec 30, 2020

MG0h3 said:
Nothing needs to be removed but if I recall, you need to snake a hose up there. Been quite a few years

You must be leaking really bad or for a long time to need to top it off?

04SilverSerpent · Dec 30, 2020

Thanks..its slowly been leaking ...I have a piece of cardboard underneath the car and it's all wet ...I guess it's possible I can make it 30 miles...I would know if it's too low because I hear clunks coming from the back right?

Fat Boss · Dec 30, 2020

At that point it'd be too late. Top it off.

04SilverSerpent · Dec 30, 2020

Do I have to have a special tool to top off or can I just use the bottle with provided tip? Thx!

olympic · Dec 31, 2020

You need a bottle pump, shouldn't be too hard to find one locally.

Sprchd83 · Dec 31, 2020

Or a transfer pump. One that you can suck up the rear diff fluid from the bottle, move the hose to the fill inlet, and then discharge the fluid into the rear diff.

hotcobra03 · Dec 31, 2020

bottle pump

swivel socket long extenton

don't drive it low even a short drive

I did
got 4 miles up road rear locked up

had to pull axles to flat tow it home 1/2 mile

second time I got a tow home

JAJ · Dec 31, 2020

Back when I had an S197 I filled the diff by running a 5 foot or so length of plastic tubing from the fill hole across to the left wheel well then up to a funnel that I taped to the jack handle. Neat, tidy and easy - no pumping required.

Fat Boss · Dec 31, 2020

JAJ said:
Back when I had an S197 I filled the diff by running a 5 foot or so length of plastic tubing from the fill hole across to the left wheel well then up to a funnel that I taped to the jack handle. Neat, tidy and easy - no pumping required.

That's exactly what I do. I have an antique Coleman lantern copper funnel that fits the plastic tube perfectly. It's slow, but effective.

P49Y-CY · Jan 1, 2021

JAJ said:
Back when I had an S197 I filled the diff by running a 5 foot or so length of plastic tubing from the fill hole across to the left wheel well then up to a funnel that I taped to the jack handle. Neat, tidy and easy - no pumping required.

Fat Boss said:
That's exactly what I do. I have an antique Coleman lantern copper funnel that fits the plastic tube perfectly. It's slow, but effective.

access on a sra is a whole different ball game

specracer · Jan 1, 2021

If your looking where to find a bottle pump, boat stores will have them, as thats how you fill a boats lower unit.

shurur · Jan 1, 2021

Just an regular orange automotive siphon pump that you can get at any store will do fine. They are $6-14. You just pump the old stuff out through the fill hole and fill through the same.

JAJ · Jan 1, 2021

P49Y-CY said:
access on a sra is a whole different ball game

Ahh... I thought it was an SRA. Sorry. An IRS diff is different indeed. I use a Mityvac 6410 transmission filler for the diff on my S550.

04SilverSerpent · Jan 3, 2021

Thx! ordering today..going to jack up the car and get it ready. I put on an irs brace yrs back so I'm guessing I didn't seal it good enough.

hotcobra03 · Jan 3, 2021

04SilverSerpent said:
Thx! ordering today..going to jack up the car and get it ready. I put on an irs brace yrs back so I'm guessing I didn't seal it good enough.

I don't feel you had anything to do with it leaking again

brace on cover will continue to break seal over and over
jmo

Can Rear Diff be filled without removing anything

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