naks wrote:

from the WSM:


CAUTION: The transmission fluid level must only be checked when the temperature of the fluid is between 30 degrees and 50 degrees (ideally 40°). The fluid level obtained will be incorrect if the reading is outside this temperature range.


Adjustment

1. NOTE: Use transmission fluid meeting Land Rover specification.
Refer to: Specifications (307-01A Automatic Transmission/Transaxle - Vehicles With: 8HP70 8-Speed Automatic Transmission AWD, Specifications).

Start the engine and idle between 600 rpm and 750 rpm.
Remove the oil fill plug.
If the transmission fluid does not come out of the transmission fluid fill plug hole the transmission fluid level is insufficient. If this is the case add the transmission fluid in 0.5 liter units into the transmission fluid fill plug hole until fluid comes out.
Refit the plug.
Confirm that the transmission oil temperature is still below 30 deg C. This will ensure that the transmission is overfilled, which is necessary to prevent air suction.

2.
All clutches and brakes must be filled, output speed must be 0 rpm, therefore:

Apply and hold the footbrake.
Engage Pos. R and wait 5 seconds.
Engage Pos. D and wait 5 seconds.
Tip Up to second gear and wait 5 seconds.
Engage Pos. N.

3. To ensure that the torque converter is filled with oil, rev up the engine in Pos. N to 2000 RPM for a minimum of 30 seconds, then engage Pos. P and ensure that the engine is idling between 600 RPM and 750 RPM.

4. NOTE: If the temperature has exceeded 50°C (ideally 40°) before the plug was re-fitted you must start again with the procedure.

With oil sump temperature between 30°C and 50°C (target 40°C) open lateral filling plug again. If the temperature is still below 40°C, allow oil to drain until 40°C are reached. If the temperature is between 40°C and 50°C, allow oil to drain, until the stream becomes a slow dribbling, then re-fit the plug.

5. NOTE: Install a new fluid level filler plug. Special Tool(s): 307-452

6. CAUTION: Make sure the transmission fluid fill plug is tightened to the correct specification. Failure to follow this instruction may result in damage to the vehicle.

To make sure the transmission fill plug is torqued to the correct specification. Using the special tool and torque wrench the following calculation steps must be followed.

Step 1. Multiply 35 Nm by the effective length of the torque wrench (1).
Step 2. Add the effective length of the special tool (2) to the effective length of the torque wrench (1).
Step 3. Divide the total of step 1 by the total of step 2.
Step 4. Set the torque wrench to the figure arrived at in step 3.
Tighten the transmission fluid fill plug to the torque given by the calculation.

7. Remove the special tool.

8. Remove the container.

9. Torque: 10 Nm

10. Torque:
M10 60 Nm
M6 10 Nm

11. Lower the vehicle.

12. Disconnect the diagnostic tool.

Disco_Mikey wrote:

DON'T run the engine with the gearbox dry, especially the 8 speed boxes

They have a very specific TC refill procedure after dropping the oil, and running it dry will only cause more harm...

Supercharged HST wrote:

naks wrote:

from the WSM:


1. NOTE: Use transmission fluid meeting Land Rover specification.
Refer to: Specifications (307-01A Automatic Transmission/Transaxle - Vehicles With: 8HP70 8-Speed Automatic Transmission AWD, Specifications).

Very informative - thank you.

Supercharged HST wrote:

Some articles - from gearbox specialists say that flushing an automatic is quite risky so not a good idea. In fact, it is said that sometimes after a gearbox flush some gearboxes have failed. Apparently, this is due to deposits being forced (under pressure from the flush) into areas of the gearbox mechanism resulting in failure.

I'm going to guess that said specialists don't have a flush machine...  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Andy K wrote:

Disco_Mikey wrote:

DON'T run the engine with the gearbox dry, especially the 8 speed boxes

They have a very specific TC refill procedure after dropping the oil, and running it dry will only cause more harm...

You only running it dry for a few seconds. Most of the time it’s pumping oil out.

If ppl don’t like this, they can let them drain down over a few days or a week.
Removing the cooler line helps gravity

RRSTDV8 wrote:

Supercharged HST wrote:

Some articles - from gearbox specialists say that flushing an automatic is quite risky so not a good idea. In fact, it is said that sometimes after a gearbox flush some gearboxes have failed. Apparently, this is due to deposits being forced (under pressure from the flush) into areas of the gearbox mechanism resulting in failure.

I'm going to guess that said specialists don't have a flush machine...

RRSTDV8 wrote:

Supercharged HST wrote:

Some articles - from gearbox specialists say that flushing an automatic is quite risky so not a good idea. In fact, it is said that sometimes after a gearbox flush some gearboxes have failed. Apparently, this is due to deposits being forced (under pressure from the flush) into areas of the gearbox mechanism resulting in failure.

I'm going to guess that said specialists don't have a flush machine...

 RRS Supercharged Genuine HST

Just in case you wish to use ZF here is how to find your nearest..

https://www.zf.com/mobile/en/company/compa...dwide.html

Happy hunting whatever route you take with this.. ===========================================
2012 Range Rover Sport Autobiography 3.0 SDV6 8 speed Automatic
Indus Silver with Hockenheim premium two-tone leather Ebony/Lunar,

RRSTDV8 wrote:

Andy K wrote:

Disco_Mikey wrote:

DON'T run the engine with the gearbox dry, especially the 8 speed boxes

They have a very specific TC refill procedure after dropping the oil, and running it dry will only cause more harm...

You only running it dry for a few seconds. Most of the time it’s pumping oil out.

If ppl don’t like this, they can let them drain down over a few days or a week.
Removing the cooler line helps gravity

The oil sits in the TC. You can leave it for a week and the stuff in the TC will still be sat there. The gearbox's oil pump is on the engine side of the TC - which is why you shouldn't tow them any distance without the engine running. Without the pump running, the oil in the TC will just sit there.

Just pay someone with a flush machine to flush it and be done with it.

Interesting video about flushing or not, or when to flush, or not. RRS Supercharged Genuine HST