Vehicle: 2005 4WD 4.0L V6 SR5 with 206,000 miles
Drained and replaced 4qts of transmission fluid today, plus the screen, o-ring and pan gasket. First time I have done that. Took 2 1/2 hours including 2 breaks. I was working slowly. It is about a 1 hour job, working steadily and methodically.
Parts all available via online parts catalog at your local Toyota dealer.
Vehicle should be on a flat and level surface.
Parts:
- 4 qts Toyota WS transmission fluid
- 2 crush washers
- transmission oil pan gasket
- metal screen
- o-ring for metal screen
Tools:
- bottle-type transfer pump (I used an empty windshield wiper fluid bottle to hold the fresh oil)
- 10mm socket
- 14mm socket
- 24mm hex socket
- 6mm hex bit
- 6" socket extension
- ratchet drive
- oil catch pan/tub
- funnel
- paper towels
Procedure:
- check (crack open) that fill plug can be removed
- check (crack open) drain plug and level check plug, retighten temporarily
- check (crack open) each transmission oil pan screw to see that they can be removed
- position oil drain tub
- remove drain plug and level check plug, drain oil into tub
- throw away old crush washers
- install new crush washer on drain plug, install and tighten drain plug
- remove all but 2 (one on each side, opposite each other) of the 20 oil pan screws
- position the catch tub under the transmission, carefully remove by hand the remaining two screws, carefully lower the oil pan and tip the remaining oil into the catch tub *****THIS IS A FULLY ACCESSIBLE OPERATION ON A 1GR-FE 4.0L V6 4WD***** V8 powertrains require partial exhaust removal
- remove pan and drain tub to a convenient place, remove old gasket, clean magnet, wipe out inside of pan, wipe sealing surface, replace magnets
- gently place new gasket in position
- move pan under the transmission
- insert an oil pan screw through the pan and gasket, carefully start the screw by hand, then do the same with one screw opposite the first
- install remaining 18 screws and snug tight
- torque gradually in a diagonal pattern
- position oil tub under fill hole and level check hole
- pump in new oil until it flows out the level check hole
- install new crush washer on level check plug, install and tighten plug
- install and tighten fill plug
- start vehicle, cycle through all gears with foot on brake
- test drive through all gears
- clean tools and dispose of oil and used parts properly
Observations:
- oil pan screws were not tight when I checked them. The vehicle had never seen transmission service. A small amount of oil was moistening the leading and trailing edges of the pan gasket.
- magnets were about as dirty as I expected
- transmission never had problems shifting. It shifts nicely now, but I can not conclusively say it is because of the oil change
- in the future I may decide to due a full 12 quart flush through the cooling tubes