'03 Td5 Auto 'slap'

[catch-22]

I read an old post that described 'slap' but didn't find the answer.

When I back off the accelerator, I hear it. If the car is coasting then I accelerate rapidly, I hear it; or if I activate cruise when coasting, I hear it.

How much auto slap is acceptable, if any? And can they be serviced to remove it? I mean, long gone are the days when they tighten or replace the belts, right? Any idea on costs?

What is the correct term to use as I want to be sure when I shop around for prices they know what I am talking about?

Cheers
Caine

[p38arover]

Shunting?

[Slunnie]

It sounds like Lash.

There are a heap of areas that can cause it, mainly the transfer case and diffs, though when the tailshafts go bad (along with a vibration or chirp) they can also do it.

When Davis Landys shimmed up my transfer case diff it took most of it out.

[justinc]

...And this is also when they decided to remove the adjustable preload on the TF case intermediate shaft with a predetermined spacer. I have since done a 2001 TF case intermediate shaft Oring replacement and found that after retrofitting the earlier model crushable spacer, the case has HEAPS less lash.

JC

[catch-22]

hrmm..

I have just driven up the ramps and taken a look and feel. The main lash noise, when gear is N and HB is down and manually moving the tail shafts, appear to come from the rear diff. There is also play in the front diff and transfer case.

The handbrake (large round unit at the back of the box) moves, on it's outer diameter, about 10mm. Hard to measure the front.

All of the unis look and feel good.

[catch-22]

I recently flushed and replenished all gear and diff fluids with full Synthetics, however, did not replace the filter or Orings in the box/t-case....

Now that I know the correct term there are a whole bunch on threads on this.....

[Slunnie]

10mm sounds like a lot.

Was there any metal on the rear diff plug? Its magnetic.

[catch-22]

10mm sounds like a lot.

Was there any metal on the rear diff plug? Its magnetic.

Not sure...I gave this job to the local. He would have mentioned it if there was. It does make an excessive clunk in my opinion.

[Slunnie]

Not sure...I gave this job to the local. He would have mentioned it if there was. It does make an excessive clunk in my opinion.
Ah no worries. I'm not sure why, but there seems to be a lot of metal shavings that come out of these diffs, and I suspect that most of it comes from the planetary gears whether they fracture or just wear. When the D2 hemisphere fails its typically these gears that do it rather than the cross pin or the actual hemisphere like on the other Rover diffs.

Thats not at all to say that this is what the problem is though.

https://www.aulro.com/afvb/images/imported/2010/06/776.jpg

[BradM]

Hi Caine,
All the rough auto changes and noises completely disapeared from my 2003 TD5 Auto when I swapped out both engine mounts on Jcooper's advice for another problem. Check them for drop, especially the drivers side one.

All the best with it mate as this is probably my last post. See general chat.

BradM

[catch-22]

Hi Brad,

thanks for the post. Yeah I read. Actually, I am comparing my driveline with my friends '03 Navara, manual.

His is tight as....well, just tight. No play what-so-ever. And he drives it like he stole ALL THE TIME.

....but I still wouldn't ever consider switching :D

I have checked the engine mounts and they appear OK. Motor still sits nice and high and they are a couple, if not a few, inches tall. I checked them last time we 'chatted'. But is certainly worth checking them again.

It actually seems to have gotten a little worse since taking it to Stockton Beach....sand driving.

Cheers
Caine