Gearbox downshift problem

[rosshand]

I have the rover gearbox in my 4.0 chim, and it wont change down gear when moving with out gear grinding, its ok at low speed, but it seems that unless the revs match the roadspeed for the gear you are going into , then it wont go in. Is this synchro gone? Can the synchro go on all gears at the same time? Changing up is fine


Please help im off the the nurburgring in 2 weeks !!!

[K4TRV]

Check your clutch master cylinder fluid level - bit of a pain to un-seal and check - but you didn't say you had, yet ??

Out-of-sight-out-of-mind and if low can produce similar symptoms.

Hope it's that simple !!

Trev McM

[rosshand]

checked it and its fine, full . Unfortunatly not a simple one

[S1CHEWY]

I had the same problem with my car when i bought it, 2nd Gear always Crunched.
Lived with it for 3 months then Re-condition the Box completely, Cost around £650. Did have do DD Clutch before, which was great coming up to Junctions etc, but you looked a prat when you got it all pete tong!

[That Daddy]

Try bleeding the clutch 1st with new fluid,contaminated(absorbed moisture)fluid as strange side effects on the hydraulic action.

Edited by That Daddy on Saturday 29th March 14:22

[Barkychoc]

Is it difficult to get in 1st gear from a standstill?
If so could be clutch.

Edited by Barkychoc on Saturday 29th March 14:29

[rosshand]

Its fine at standstill with engine off and with engine running, its just when moving it wont go into first until your almost stopped, its a similar issue on second and third and fourth, when changing down, unless the engine speed is matched to the road speed it crunches

[Barkychoc]

I assume the gearbox has oil in it?
Might be worth draining & refilling it.

[That Daddy]

Barkychoc said:

Is it difficult to get in 1st gear from a standstill?
If so could be clutch.

Edited by Barkychoc on Saturday 29th March 14:29

Truebut may also be as my last post,or the clutch fork is failing(early signs)

[rosshand]

That Daddy said:

Barkychoc said:

Is it difficult to get in 1st gear from a standstill?
If so could be clutch.

Edited by Barkychoc on Saturday 29th March 14:29

Truebut may also be as my last post,or the clutch fork is failing(early signs)

excuse my ignorance, but what is the clutch fork? I've not had the box out before but am willing to try

[That Daddy]

rosshand said:

That Daddy said:

Barkychoc said:

Is it difficult to get in 1st gear from a standstill?
If so could be clutch.

Edited by Barkychoc on Saturday 29th March 14:29

Truebut may also be as my last post,or the clutch fork is failing(early signs)

excuse my ignorance, but what is the clutch fork? I've not had the box out before but am willing to try

The arm the clutch release bearing sits on ,its prone to failure(fracture/cracking)if you can get the car on a ramp or stands then get someone to dip the clutch while you look inside the bellhousing openings to see if all the slave cylinder pushrod movement is being tranfered into the arm and moving the bearing forward rather than the arm flexing due to it starting to fail,the good news is it can be changed with th G/box in situ,the bad news is it may have failed because the clutch as got heavy and overloaded the arm(worn clutch,pressure plate fingers to far out)but it may have just fatigued/old age.

[spend]

That Daddy said:

...if you can get the car on a ramp or stands then get someone to dip the clutch while you look inside the bellhousing openings .... the good news is it can be changed with th G/box in situ...

He stated that he has a rover box, not the T5!!!

Bellhousings are quite different.

Dave

[That Daddy]

spend said:

That Daddy said:

...if you can get the car on a ramp or stands then get someone to dip the clutch while you look inside the bellhousing openings .... the good news is it can be changed with th G/box in situ...

He stated that he has a rover box, not the T5!!!

Bellhousings are quite different.

Dave

Sorry about that,should have read the OP properly,are they not as open around that area then Spend?

[spend]

That Daddy said:

spend said:

That Daddy said:

...if you can get the car on a ramp or stands then get someone to dip the clutch while you look inside the bellhousing openings .... the good news is it can be changed with th G/box in situ...

He stated that he has a rover box, not the T5!!!

Bellhousings are quite different.

Dave

Sorry about that,should have read the OP properly,are they not as open around that area then Spend?

Not unless someone has drilled a big hole, which I believe has only been done a few times. Sounds more like you were ignorant of the difference rather than misreading the post to me, judging by your question

You can always tell the southern Essex boys from the Northern Longbridge / Solihull brigade

Dave

[That Daddy]

Sorry Spend wrong there i am afraid,i was asking your opinion not being ignorant,in my trade you guess nothing,ignorance!thats best left to you

[spend]

That Daddy said:

Sorry Spend wrong there i am afraid,i was asking your opinion not being ignorant,in my trade you guess nothing,ignorance!thats best left to you

Whatever........

Dave

[That Daddy]

spend said:

That Daddy said:

Sorry Spend wrong there i am afraid,i was asking your opinion not being ignorant,in my trade you guess nothing,ignorance!thats best left to you

Whatever........

Dave

Do you know Spend, a few on here actually thought we had a beef when they had read some of the banter we,ve posted on hereat least its convincing mmm maybe i should get into acting,at least i can keep me hands clean

Edited by That Daddy on Sunday 30th March 21:15

[spend]

That Daddy said:

[

Do you know Spend, a few on here actually thought we had a beef when they had read some of the banter we,ve posted on hereat least its convincing mmm maybe i should get into acting,at least i can keep me hands clean

Edited by That Daddy on Sunday 30th March 21:15

Still think there is a hole in the bell housing? or just trying to confuse the issue?

Dave :yawn:

[That Daddy]

Got me again

[Ribol]

To the OP - the easiest way to work out if the clutch is disengaging properly is to try selecting reverse with the engine running, there is no syncro on reverse to confuse matters.