Sticky gears

[Auxfire]

I have noticed 48-364 has started to change from silky smooth gear changes to being hard to get into gear. Particularly when coming out of fourth off the motorway, it's now off the road until I can work out whether its clutch or gearbox trouble.
Seems to go into gear again if I put the transfer into neutral then back into high but either sticks in gear or in neutral after driving for a while. Any ideas?

[dugite]

What gearbox oil are you using ?

There has been a bit of discussion here on the use of synthetic alternatives which users have found to be superior.

[Auxfire]

I got lazy & had the last service done by a local mechanic who works on a few perenties, so no idea what oil he used Dugite.
Turns out it was the clutch slave cylinder. Had the master replaced at the same time & she's back on the road again.

[Carzee]

Having a cuppa right now and feeling unlucky etc.
Lately the early morning frosty engine warmup routine has been the norm and when driving for the first 10 minutes I have been double clutching by default- gear changing has been very sticky and careful, especially 1st into 2nd. The stick has been needing a big yank to get out of that 1st gear slot.
Rangy recently recommended a change of 'box oil to Fuchs 5w-30 or something and i had that job on the to do list... But I was suspecting the main culprit was a low quality built slave clutch cylinder...

I purchased a used slave clutch cylinder last week and sourced a local guy "Trevor" who will re-sleeve it with stainless steel this week... But this morning coming to work was -5deg and frosty at 0730 and just outside the main gate the ability to engage ceased and desisted.
Its just bad timing i know, but now i need a tow home come 1500.

[Carzee]

While on shift I arranged a helping hand/phone a friend, Wayne T, and he was parked outside the gate with his GS bedside my FFR when I clocked off. The incoming shift had asked what was going on and "why was the Army out front" with a smile.

Anyway, Wayne had diagnosed the problem before I got there and had the bonnet up - he saw there was no fluid in the reservoir up top on the master beside the firewall and the slave cylinder has a small leak. Maybe the rubber flex pipe is also shot somewhere. We left and purchased some Dot 4 then returned to do the bleeding. Took quite a while. So that gave me gear selection back again. Maybe tomorrow it will revert to U/S again but at least I got to drive home and saved a tow job.

Tomorrow I will get the stainless recond. job underway on the spare slave cyl. and buy some genuine girling rubber as well.

[Carzee]

I have not got the resleeved slave cylinder back as yet, but no hurry, 50-257 has not been off the road while I wait.

In fact the other day Rangy35 changed the gearbox oil at Roverworks and now there is no early morning / cold engine sticky gear problem at all. So a big thank you to the expertise of Johnny: he put in the hi tech ATF as he does in his own Perentie.

I will still fit the recond. slave cyl and flexy hose of course.

[FFRMAN]

I have not got the resleeved slave cylinder back as yet, but no hurry, 50-257 has not been off the road while I wait.

In fact the other day Rangy35 changed the gearbox oil at Roverworks and now there is no early morning / cold engine sticky gear problem at all. So a big thank you to the expertise of Johnny: he put in the hi tech ATF as he does in his own Perentie.

I will still fit the recond. slave cyl and flexy hose of course.

Hi Ross

What was the actual ATF he put in?

Thanks

[fc101]

As mentioned there is a lot of talk about gearbox oils and issues that come up.  I have stayed with engine oil and it works fine in all conditions.  I also live in Canberra with its cold mornings in winter and hot summers - no issue when gear changing so why change when it works and works great.

Gearboxes are too expensive to risk changing oils.

Garry

[Carzee]

Well its been a week so far with no more sticky shifting and thats even at dead cold let alone when its warmed up. Problem solved. I'm prepared to accept that after 25yrs lube solutions are more varied. Johnny uses HiTec Multitrans full synthetic (gold colour atf not red) and in my gearbox its chalk and cheeze: i don't know what BAE/Frontline put in there in 2014... but it wasn't very good.

[fc101]

Thats great - just make sure you never put any variation of EP90 in the box as it will kill it pretty quickly.

Garry

[FFRMAN]

HI,

I've used Nulon G70 in my gear box with a Nulon 15w40 diesel engine oil, seems to work well just a bit hard getting into 2nd when very cold after that fine

Any comments??

Nulon say it's fine in the LT95 box

http://www.nulon.com.au/products/Specialty_Products/Manual_Gearbox_and_Diff_Treatment/

[Rangy35]

My exact sentiments, if it works for you stick with it.
I am very cautious about what lubes to use and the gearbox oil or ATF/MTF that I use has been used in my Perentie for about 25-30,000 km, I have changed it three times and purely because I wanted to flush the gearbox and make sure there was no trace of the old oil and to make sure there was no foreign matter floating around due to the fact that I am convinced the guys that serviced my Perentie was way below spec. The faults and extreme lack of maintenance was appalling to say the least.

Glad you are happy Ross.
 

[Carzee]

Hi Johnny, yes excellent fix.

Um, watcha got for toothache?
I'm on Panadol Forte this weekend and so far its not cutting it.

[Carzee]

Unlucky or what? As of this time yesterday (without any notice or noises), I've got gearbox problems: when I'm underway I can't select 2nd gear going up 1234 or coming down 4321. But selecting 2nd from a standing start is fine -you can pull away with care and go up to 3 and 4.

Minikeg had a similar problem on his GS Perentie and chasing up the fault it turned out to be caused by a bit of a plastic or rubber bush that got too old and fell to bits, down into the selector mechanism on top of the box - the piece only blocked selection of 2nd. Johnny had a good test drive. Ruled out the slave clutch (still haven't installed the recon part) as a cause but until removing the floor and having a good look it could be any number of mech faults - perhaps a U/S dog clutch or a rebuild coming up (worse case scenario).

At this stage I have booked a service slot for Sept 2nd, could be there a while - Roverworks is very busy.

[P6X6]

As has been said by black knight on other gear box problems, I would ask "Bearman". He's a busy man but he's a god with LT95a's AND he's a gentleman!!