blown reverse gear.. fixing

[VN-88]

hey guys, just blew my reverse gear in my manual. its a vn..

now i dont know what exactly happened but now wen i put it in reverse it moves like 3 cm's then there is this massive clunk which jolts the car... what is happeneing here?

i was told around 1500 to fix it.. bull shit!!!!! so im gonna do it my self.

now what i need to know is how to check it all out, how do i check reverse in it with out taking it all apart like splitting it, isnt there a back plate or something, also im gonna need pics ect.

another thing is if any one has a blown manual box with working reverse gear. cause ill buy it off u...

thanks ur friendly and very upset commy driver

[VN-88]

come on guys, some one must have interior pics of a manual box or even a book with the plans of the interior.

or even a blown up one sitting around that has working reverse

[samuels]

hey guys, just blew my reverse gear in my manual. its a vn..

now i dont know what exactly happened but now wen i put it in reverse it moves like 3 cm's then there is this massive clunk which jolts the car... what is happeneing here?

i was told around 1500 to fix it.. bull shit!!!!! so im gonna do it my self.

now what i need to know is how to check it all out, how do i check reverse in it with out taking it all apart like splitting it, isnt there a back plate or something, also im gonna need pics ect.

another thing is if any one has a blown manual box with working reverse gear. cause ill buy it off u...

thanks ur friendly and very upset commy driver

now this massive clunk in reverse does it lock the car up,or just a clunk?what happens if you keep reversing? my first suggestion is to check universal joints,gearbox mount..if you suspect reverse is shot,not a 100% diagnosis,but it will tell you something is a miss in there,undo the gearbox oil level bung(top bung),see if the bung has any metal or shavings,etc stuck to the back of it,as it is magnatised.otherwise to check reverse gear,i'm afraid it's gearbox out ....won't take long just undo the 4 bolts holding gearbox on to bellhousing,no special tool required as 12mm ring or socket will undo them..(12 mm from memory) but first off remember tail shaft out first,mark tailshaft take out the 4 bolts,undo the 2 bolts that are holding the centrebearing(the bolts that look like they are going thru the floorpan) from memory it's the outside bolt X2...1 either side..1/2 hour job to remove....also have to remove gear lever trim panel to get lever off.....
take top cover of and have a look down in there,see what you see,i can't post pics,don't own a scanner anymore,and i don't have any gearbox jobs on the go at the moment to take pics of..

[VN-88]

now this massive clunk in reverse does it lock the car up,or just a clunk?what happens if you keep reversing? my first suggestion is to check universal joints,gearbox mount..if you suspect reverse is shot,not a 100% diagnosis,but it will tell you something is a miss in there

um i havent really left it in reverse for too long, it moves back about a inch maybe less, then clunks, i only let the clutch out a little and as soon as its a certain distance out it clunks so i just push it back, cause im scared of maybe it worse, but its a huge clunk.

and by taking that top bolt thing of for the oil level if there is metal in there then its not good hey...

do u have any blown boxes at your house or work that has a working reverse. ill check it this weekend and see wats going on.

[Hairy Eater]

VN-88... i'll wait for your next reply here... i have a VN Gregory's... if you need help, just ask here... messege me or email me...

[samuels]

um i havent really left it in reverse for too long, it moves back about a inch maybe less, then clunks, i only let the clutch out a little and as soon as its a certain distance out it clunks so i just push it back, cause im scared of maybe it worse, but its a huge clunk.

and by taking that top bolt thing of for the oil level if there is metal in there then its not good hey...

do u have any blown boxes at your house or work that has a working reverse. ill check it this weekend and see wats going on.

yes if theres metal shavings on the bung...actually either top or bottom,they are both magnatised...it's just that the bottom one is obviously your drain plug,if you suspect reverse is shot,empty gear oil into clean container,you will definately see if theres something a miss in there,oil will be greyish colour/metal shavings mixed with it.
sorry no i don't have any boxes laying around ....rare as hens teeth here
i have a 5 spd wagon,but i'm selling the car complete,i'm just doing finishing touches now, bloody hinge gave way on me and popped a hole in windscreen...
so the clunk is definately coming from gearbox? just try and reverse it further and see what happens...noises,etc,etc..

[VN-88]

i would keep reversing but m scared, its a hard clunk and the whole car jolts, like almost jumps, and im afraid of doing something alot worse

[samuels]

i would keep reversing but m scared, its a hard clunk and the whole car jolts, like almost jumps, and im afraid of doing something alot worse

with out actually sitting in the car,and listening to the actual noise and trying it in reverse,it's hard to give you a definitive answer,but the way you are describing,it may only just be something simple like uni joints or even centre bearing......does it make clunking noises in forward gears? could also be backlash in your diff...unless previous owner knew that gearbox was on it's way out,as it shouldn't have given up the ghost on you that quick....unless you have given it a bit of stick,to see what you've got now power wise

[VN-88]

well it doesnt make any noise in forward, as ive been driving it abit now and its fine in every other gear. so i cant see it as unis or anything else other then reverse, im gonna change the oil tonight and see if there is metal in there

[samuels]

well it doesnt make any noise in forward, as ive been driving it abit now and its fine in every other gear. so i cant see it as unis or anything else other then reverse, im gonna change the oil tonight and see if there is metal in there

OK...let me know what you find.....the uni joints may have more movement in them going backwards,as your putting reverse pressure on them,anyhows you'll let me know either way

[VN-88]

ok so i just change oil and i cannot see any metal, i had 1 psec in the whole thing, a ting 1/4 * 1/4 mill spec, and the oil may have been sparkly but really it didnt look like it had any sparkly crap at all. no huge chunks... But i did have my car up on larg rams and maybe a huge chunk sat at the back, with the tail chaft, i took it back off and went back wards, it went maybe a foot or half and clunk, dad thought it was the shaft till i did it again it it actually through it out of reverse, so dad said maybe it just seemed to sound through the tail shaft. and i think there is alittle play in my centre bearing and front uni, but nothing really and that wouldnt cause my gear box to jolt out of reverse

[samuels]

ok so i just change oil and i cannot see any metal, i had 1 psec in the whole thing, a ting 1/4 * 1/4 mill spec, and the oil may have been sparkly but really it didnt look like it had any sparkly crap at all. no huge chunks... But i did have my car up on larg rams and maybe a huge chunk sat at the back, with the tail chaft, i took it back off and went back wards, it went maybe a foot or half and clunk, dad thought it was the shaft till i did it again it it actually through it out of reverse, so dad said maybe it just seemed to sound through the tail shaft. and i think there is alittle play in my centre bearing and front uni, but nothing really and that wouldnt cause my gear box to jolt out of reverse

it may be time to take box out and lift the lid....but remember,you only have to undo the 4 bolts holding it to the bellhousing.pop the lid and and look to see if anything looks out of place....I.E reverse idler..detent springs,etc.

[VN-88]

ok, ill have to do that this weekend then
fun fun fun.

the plate i take of what one is that, is it were the selector goes down?

[Hairy Eater]

just got your message... i'll scan tomorrow 6 pages and get them off to you about 4.30 to 5.00 pm.....

[samuels]

ok, ill have to do that this weekend then
fun fun fun.

the plate i take of what one is that, is it were the selector goes down?

no it should be the plate right in front of selector plate...when you are taking off top cover take note of the location of the 2 dowel bolts
lift it up slightly and slowly,slide the cover towards filler plug side to allow shift mechanism to clear groove in 5th/reverse shift lever

[Hairy Eater]

i scanned 10 pages and sent to your email yesterday.... let us know how things are progressing....

[VN-88]

i got em, pull it out tomoz, thanks for that

[VN-88]

found the problem fellas, got some pics..
new bottom shaft for me

[Blown V6 Hatch]

Thats pretty nasty mate, no wonder why reverse gear was making a wicked noise! I wish you luck in getting another shaft.

[samuels]

Thats pretty nasty mate, no wonder why reverse gear was making a wicked noise! I wish you luck in getting another shaft.

shouldn't be that hard to get hold of,if you can't get it at GMH as a spare part,i'm sure Borg Warner australia could supply him with another one,even if it has to come from the states.

[VN-88]

ok, anyone gt the number for borg warner australia. or any good wreckers, i could just get it second hand

[VN-88]

hey, wat is that acutall part called, the one in my pic, its hard trying to get a price on something wen im calling it the bottom shaft and they dont no what im talking about

[greenfoam]

Do those gears come off the shaft?
Because I found a web site in the states that sell all the gears but they don't mention any complete shaft like that

[samuels]

hey, wat is that acutall part called, the one in my pic, its hard trying to get a price on something wen im calling it the bottom shaft and they dont no what im talking about

it's generally called a reverse idler shaft..did you try GMH for parts? any transmission specialists in your area,they would know of a supplier,otherwise, if part can't be found, it's mechanical engineering time,to make you one up,but my guess would be,cheaper to get another s/hand box....

[samuels]

ok, anyone gt the number for borg warner australia. or any good wreckers, i could just get it second hand

actually i seem to be wrong about borg warner being in australia,according to their site there is no borg warner australia,so GMH must have to keep parts,as borg warner is still contracted with all the drivelines and tranmissions
anyhows...borg warners site

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