A Strange Noise and a Pleasant Surprise....

When I got home I wanted to get underneath the L322 as I had the windows down with the radio off - sometimes I like to just listen for things that are normally missed in general day to day driving....

Noticed that when you brake from say 30-35 when you press the brake pedal there is an external click from somewhere near the gearbox - not sure what that is yet...doesn't do it when crawling, does do it above say 10mph but is only a little click, the click seems to get louder (but not more menacing- just louder) the faster you go....anyhoot , I clambered underneath and nothing is loose that I can see.....

But whilst I was under there I noted the attached picture - many have heard of the dreaded Front Diff failure on the earlier L322's and the some of the recall work was to fit a CV joint to the Front Prop (similar to the Jag RR setup) and Diff Input.....Looks like mine has had the work done - so that is one less thing to cross off the list of possible work to be done...!! A pleasant surprise....

Back to the strange noise, anyone any clues??

mine does that every now and again, i found normally after going over loose stones gravel type surfaces, found that stones was in the back plate. good whack with foot or hand normally sorts it

1992lse said:

mine does that every now and again, i found normally after going over loose stones gravel type surfaces, found that stones was in the back plate. good whack with foot or hand normally sorts it

Click to expand...

I'll take a gander at that in the morning...does seem more of a mechanical click, but yer never know could be a stone somewhere it shouldn't be!!

checkthe pads as well, i used to get it on my classic when the front pads wore down

All Pads replaced in Mid July - had an epic trip to West Yorks to get a Locking Wheel Nut off so I could finish the job....!!!

Many thanks for the suggestion though....head scratcher this one...!!

if in doubt, close the window, and turn the radio back on. the land rover cure lol

1992lse said:

if in doubt, close the window, and turn the radio back on. the land rover cure lol

Click to expand...

- had thought of that!!

Saint.V8 said:

- had thought of that!!

Click to expand...

:hysterically_laughi

may be the anti rattle springs on the outside of the calipers , i had a clicking noise at certain speeds and it turned out to be the anti rattle springs on the front calipers working their way out and just making contact with the wheels , thus you get a ticking/clicking noise , i was able to tap them back in without taking the wheel of as there was plenty of room between the spokes on my 20" supercharged wheels, other wheels you may have to take em of to see the problem

might be wrong ,but when ever you press the brake pedal it disengages the locking pin that prevents the gear stick moving from park unless the brake is pressed , the same mechanism also stops it going into reverse from neutral unless the brake is pressed and the speed below a certain point , the locking pin is disengaged by a solenoid in the gear box this could be the loud click if you put your hand on the gear stick when in park and press the brake you can feel the click of it disengaging , obviously haven't heard your click but its worth thinking of before you start pulling lumps off the car.

Saint.V8 said:

But whilst I was under there I noted the attached picture - many have heard of the dreaded Front Diff failure on the earlier L322's and the some of the recall work was to fit a CV joint to the Front Prop (similar to the Jag RR setup) and Diff Input.....Looks like mine has had the work done - so that is one less thing to cross off the list of possible work to be done...!! A pleasant surprise...:

Click to expand...

Saint, if you are out there, i was going to start a new thread but found your post whilst searching..

my front diff breather pipe, the one you helped me identify when i first got my truck, has started leaking oil at the top end in the engine bay. there is a possibility we managed to get too much oil in when we refilled it when we did the transmission but a bit of a delayed reaction which got me thinking about the diff recall although when i checked with my local main dealer they said there were no outstanding recalls. i have attached a pic which does look like yours so hopefully its done.



there is a TSB regarding leaking oil from the front diff breather which refers to the orientation of the breather outlet regarding the position of a flat, i dont have a flat anywhere....






i managed to find the TSB on a russian site and translated it but its bit difficult to understand still

any ideas anyone?

Do you have the TB Number???

My thoughts are the diff is getting warm and the oil expanding...but it would have to get really warm to expand that much I would have thought!!

so maybe it is over filled, maybe a check of the level wouldn't go a miss!

Yes looks like your Front Diff has had the recall work!

Not sure what can cause excess pressure in the Diff....

LTB00049 is the number, there is a link below to the russian pdf which you can translate direct from the google search page if you put the number into google as i'm struggling to convert it to something i can post

when we filled it we just followed the rave manual i think and filled it until it ran out which makes me wonder if the new diff needs a certain volume instead. we did use more oil than we anticipated as i remember we ran out rather than having a little spare

there are a few other references to it on other sites as well to people having the same issue but not a definitive answer..

http://land-rover77.ru/media/documents/LTB/LTB00049.pdf

Taken from Rave, the rear diff says 1.2 litres, i had 2 litres but we ran out but i was cutting it a bit fine anyway so i think i reused a very small amount of what came out in the rear..


Front Differential
The front differential is mounted on the LH side of the vehicle sump. The sump has a cast tube through it, which allows
for the fitment of the RH drive shaft and separates the engine oil from the differential oil. The differential unit is secured
to the engine sump with 4 bolts. The bolts pass through lugs in the differential casing and are secured into threaded
holes in the sump. An O-ring seal is fitted to the casing and locates in the sump to provide a seal between the casing
and the sump.
The casing comprises two halves with machined mating faces. When assembled, the iron casing halves are sealed
with a thin film of Loctite 574 sealant and secured together with twelve bolts. The LH casing is the carrier for all the
rotating parts and the RH casing is a cover to close the unit and a support for the RH carrier bearing. A breather tube
is fitted to the casings. This allows a plastic tube to be fitted and routed to a high point in the engine compartment,
preventing the ingress of water when the vehicle is wading.
The LH casing is fitted with a drain plug and a filler/level plug. The level plug allows the unit to be filled with oil until it
leaks from the filler hole, ensuring the correct quantity of oil is added. The differential unit contains approximately 0.8
litre of oil for a dry fill and requires approximately 0.75 litre if oil is changed due to residual oil retained in the casings.
The differential is a conventional design using a hypoid gear layout. This employs a hypoid bevel pinion gear and
crown wheel, with the pinion offset below the centre line of the crown wheel. This design allows for a larger pinion
gear to be used which has the advantages of increased gear strength and reduced operating noise.
The front differential is available in two ratios. V8 engine vehicles use a differential with a final drive ratio of 3.73:1 and
Td6 engine vehicles use a final drive ratio of 4.10:1. The ratio is changed by changing the amount of teeth between
the crown wheel drive gear and pinion gear. Therefore for a ratio of 4.10:1, the crown wheel drive gear will have 4.10
times more teeth than the pinion gear. This equates to the crown wheel drive gear having 41 teeth and the pinion gear
having 10 teeth.

bit cheeky i know but found this which is sort of related, but i am puzzled as to why i dont have the flat on the breather outlet??


fullfatrr.com - View topic - Hot Diff and Leaking Diff Breather

birchy.

you have described something I have 'felt' for a while and been thinking about.
I have no noise as present...
St could this be it?

Saint.V8 said:

Do you have the TB Number???

My thoughts are the diff is getting warm and the oil expanding...but it would have to get really warm to expand that much I would have thought!!

so maybe it is over filled, maybe a check of the level wouldn't go a miss!

Yes looks like your Front Diff has had the recall work!

Not sure what can cause excess pressure in the Diff....

Click to expand...

Bit of the old oxidised metal under yours Ant it would seem.

Diff recall did not replace front diff....only the union/joint to it, so capacities will remain as per the book.

wammers said:

Bit of the old oxidised metal under yours Ant it would seem.

Click to expand...

Those photos are of Andys not mine Tony!

donp38 said:

birchy.

you have described something I have 'felt' for a while and been thinking about.
I have no noise as present...
St could this be it?

Click to expand...

What Birchy describes is the shift interlock solenoid engaging and disengaging....

Can be heard as a little click under the centre console......and felt if you rest your hand on the gear selector.

Mine is a heavy, distinct clunk; as if the clutch drums are sliding about and hitting each other, but only happens once and only when the gearbox is warm!