It’s time to change ATF on my HT51S. Usually agents recommend to
change after 40,000 kilometers. I don’t have any idea when was the previous
change. So for the safe side lets do it.
Process was straightforward. First need to drain existing ATF
inside. Used manual method as it was recommended by most. Once the drain comes
to a stop, refill the transmission with new ATF. BG ATF (compatible to ATF
3317) 2 liters was poured in and run the engine for around 5 minutes. New ATF
will circulate inside the transmission and helps to remove what was left over
in the drain process, including ATF inside converter which wont get removed in
normal drain. Again let the ATF drain and remove the sump cover. This is a
crucial step and you’ll know why from below.
One the sump was removed we can see a metal filter inside. Need
to clean that also, so go ahead and remove that. Once sump and filter are
removed need to clean them thoroughly using petrol. Below is how the
transmission system looks like after removing above components.
There are two magnets attached to the sump, to collect metal
residue inside the transmission system. It will be full of residue when
cleaning period comes. That too needs to be cleaned. Once the metal filter is
cleaned, fix it and place the two magnets on the sump. Use a gasket maker (used
ABRO) and seal the sump cover and and secure with nuts.
Time to refill. It will require around 4 liters of BG ATF. Pour
it and check the levels with dip stick. You wont get an exact reading until the
engine start running. BG conditioner was added to the ATF to smooth the
operation.
Once the ATF filled to a satisfying amount start the engine and
refill to the correct level using dip stick. Let the engine run few minutes,
check the ATF level and refill as required.
That’s how ATF was changed. Check the level after a day or two
to make sure the level aren't changed.
