Thread: Gearbox Service

nope torque converters in cars dont have them they'd make balancing the buggers a snot of a job.

the torque converter housing (aka the bell housing) have drain plugs.

you dont need any super special tools to flush the auto properly, just some time and patients.

it can take up to 20 L and you will need a pump or method of getting your fluid into the auto, a drain pan of suitable capacity and some hose to cover the fitting from one of the cooler lines and the cooler side of the fitting.
a new filter and sump gasket if you plan on doing the whole thing just right.
someone to start and stop the engine also helps.

simply disconnect one side of your trans oil cooler hook up your 2 hoses to the cooler line and fittings and aim them into your drain pain (I prefer to use a 2l tub in the pan.

dran and drop the pan replace the filter, gasket and everything else (clean it all well prior to starting)
fill the pan and start the engine
when the cooler lines start to flow oil turn off the engine and add 1.5l of oil to the auto
restart the engine and drain out 1.5l of oil from the hoses on the lines on the cooler.
repeat as required and you'll notice the oil start to change colour. when the oil is near enough to the same colour as new oil put the cooler line back on the fitting start the engine and top up as per the instructions on your particular auto. (for the ZF its a 2mm bead of oil coming from the fill plug)

Done.

do that every 50K Km.

OR...

drain the pan and replace the oil in there every 12 months then when you hit the 50K/36 month mark, remove the pan, clean the pan and change the filter.

A proper full flush requires a machine that does basically what Ive just outlined but it does it all automatically, makes less mess and takes less time to do.

Did my trany about a month ago. Lucky for me the colour of the oil was a nice clear pink, which indicated a realively clean oil. The filter had a bit of black gunk in it and was replaced. i would put it down to replacing the trany oil at least every 24 months to stay on top of the maintenance schedule.

Originally Posted by Blknight.aus

nope torque converters in cars dont have them they'd make balancing the buggers a snot of a job.

the torque converter housing (aka the bell housing) have drain plugs.

you dont need any super special tools to flush the auto properly, just some time and patients.

it can take up to 20 L and you will need a pump or method of getting your fluid into the auto, a drain pan of suitable capacity and some hose to cover the fitting from one of the cooler lines and the cooler side of the fitting.
a new filter and sump gasket if you plan on doing the whole thing just right.
someone to start and stop the engine also helps.

simply disconnect one side of your trans oil cooler hook up your 2 hoses to the cooler line and fittings and aim them into your drain pain (I prefer to use a 2l tub in the pan.

dran and drop the pan replace the filter, gasket and everything else (clean it all well prior to starting)
fill the pan and start the engine
when the cooler lines start to flow oil turn off the engine and add 1.5l of oil to the auto
restart the engine and drain out 1.5l of oil from the hoses on the lines on the cooler.
repeat as required and you'll notice the oil start to change colour. when the oil is near enough to the same colour as new oil put the cooler line back on the fitting start the engine and top up as per the instructions on your particular auto. (for the ZF its a 2mm bead of oil coming from the fill plug)

Done.

do that every 50K Km.

OR...

drain the pan and replace the oil in there every 12 months then when you hit the 50K/36 month mark, remove the pan, clean the pan and change the filter.

A proper full flush requires a machine that does basically what Ive just outlined but it does it all automatically, makes less mess and takes less time to do.

Yes i agree with this approach.
If you are only dropping the pan fluid you are doing a 50% change.
Drive it for a week or so drop the fluid again and you have freashened the fluid up to the tune of 75%.
Then i would do it yearly or 20k KM max.
Fluid is cheap a trans is about $3500.
And if looked after a ZF will easily give 400,000km service.
I have dropped the fluid out of D2s with the fluid looking like very dirty engine oil.
Some people just dont look after them

Im pretty sure I have an auto change coming up....

I'll do the tute if it happens

I will give it a couple of weeks and change the 5 ltrs again.
Some cars definitely have a drain plug in the torque converter. Shame Land Rovers dont.
I only know this as I have a Mercedes SL500 and some do and some dont have the drain plug. A quick search on Google will give plenty of instruction and pics.
here is a similar Mercedes Box

PeachPartsWiki: 722.6 Transmission Fluid and Filter Change