| [ Total Views: 1131 | Total Replies: 14 | Thread Id: 90416 ] |
|
|
 shokwave2
A.k.a.: Matt Hamilton
Officially Full-On Dubber
Posts: 289
Threads: 28
Registered: March 7th, 2010
Member Is Offline
Theme: UltimaBB Psyche Blue
|
| posted on May 13th, 2011 at 02:50 PM |
|
|
4th gear popping out.....repair or replace?
My 4th gear pops out when i put my foot down. If i'm just cruising the freeway it's ok, but once i come to a hill or an overtaking lane it pops out
of gear once i accelerate. I have to softly place my hand on the gear knob to prevent it from popping but i've read this wears it out.
It never used to annoy me as i would mostly drive around residential and city roads, but now my daily drive is 150km+ and 90% of it is 100km/h freeway
driving.
My question is: Has anyone had this problem and what did you do? Did you get it rebuilt or just replace the whole transmission? Does anyone know
roughly the cost differences between a repair and a replacement?
Cheers.
|
|
|
shaihulud
Custom Title Time!
Posts: 1448
Threads: 197
Registered: November 4th, 2005
Member Is Offline
Location: Perth
Theme: UltimaBB Pro Blue ( Default )
|
| posted on May 13th, 2011 at 03:31 PM |
|
|
I drove a 1970, 1500 Beetle with a gearbox that jumped out of top, for over a year by attaching an Occy strap to the gearshift lever. I hooked the
other end onto the underside of the rear seat frame.
When I changed into top I slid the Occy strap up to the top and when I changed down it slid down all by itself and in the lower gears it was out of
the way
I did this for a year and it never seemed to get any worse even though I've heard that that is a good way to wear the gearbox out in a hurry.
I suggest that you try that until you can organise a proper fix of the problem. I doubt if it will make it a more expensive job.
What the problem needs to fix it I don't know. I'll watch this thread closely to get the answer.
|
|
|
 Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12765
Threads: 734
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on May 13th, 2011 at 05:05 PM |
|
|
Cheaper to replace - $500ish + work
Better to rebuild - $1500ish + work
All depends on the car
Futue te ipsum!!!
|
|
|
grumble
Son of Jim - Creator of Good
Posts: 2668
Threads: 53
Registered: June 10th, 2008
Member Is Offline
Location: Taree
Theme: UltimaBB Pro Blue ( Default )
Mood: happy all the time
|
| posted on May 13th, 2011 at 05:38 PM |
|
|
I assume that you have tried adjusting the stick,if not this may help,but as it has been jumping out for a while I would suggest a repair as a used
box is always an unknown quantity and no one wants to do the job twice. replacement.
|
|
|
shokwave2
A.k.a.: Matt Hamilton
Officially Full-On Dubber
Posts: 289
Threads: 28
Registered: March 7th, 2010
Member Is Offline
Theme: UltimaBB Psyche Blue
|
| posted on May 13th, 2011 at 05:43 PM |
|
|
| Quote: | Originally
posted by grumble
I assume that you have tried adjusting the stick,if not this may help,but as it has been jumping out for a while I would suggest a repair as a used
box is always an unknown quantity and no one wants to do the job twice. replacement.
|
Sure have. I replaced both bushings about a month ago and the only difference is less slop. I've played around with adjusting the shift plate but it
still pops out no matter where the plate is.
Also, 4th gear is noisy, which suggests wear i'm guessing. I don't want to replace the transmission only to have the same problem occur in 12 months
time.
|
|
|
cb john
Wolfsburg Wizard
Posts: 470
Threads: 6
Registered: June 22nd, 2007
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue
|
| posted on May 13th, 2011 at 10:15 PM |
|
|
It could be as little as worn or broken detent spring...check that out first before major repairs...
|
|
|
shokwave2
A.k.a.: Matt Hamilton
Officially Full-On Dubber
Posts: 289
Threads: 28
Registered: March 7th, 2010
Member Is Offline
Theme: UltimaBB Psyche Blue
|
| posted on May 14th, 2011 at 07:49 AM |
|
|
The detent springs sit in the three holes on the driver's side of the transmission don't they? What purpose do they serve and how do they effect the
4th gear?
|
|
|
68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
Posts: 11654
Threads: 449
Registered: August 31st, 2002
Member Is Offline
Location: SCONE in UPPER HUNTER VALLEY NSW
Theme: UltimaBB Pro Yellow
Mood: Really Mentally Ill - all of the time -
|
| posted on May 14th, 2011 at 06:12 PM |
|
|
| Quote: | Originally
posted by shokwave2
| Quote: | Originally
posted by grumble
I assume that you have tried adjusting the stick,if not this may help,but as it has been jumping out for a while I would suggest a repair as a used
box is always an unknown quantity and no one wants to do the job twice. replacement.
|
Sure have. I replaced both bushings about a month ago and the only difference is less slop. I've played around with adjusting the shift plate but it
still pops out no matter where the plate is.
Also, 4th gear is noisy, which suggests wear i'm guessing. I don't want to replace the transmission only to have the same problem occur in 12 months
time.
|
Hi
I would replace the transmission with a known good used one
change the oil and add two tubes of NULON G70 gearbox additive... that should stop any more wear and quieten the gearbox down..
cheers
LEE
PS: You need a specialist to fix a VW transaxle ...
so that will be a more expensive option...
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
|
|
|
grumble
Son of Jim - Creator of Good
Posts: 2668
Threads: 53
Registered: June 10th, 2008
Member Is Offline
Location: Taree
Theme: UltimaBB Pro Blue ( Default )
Mood: happy all the time
|
| posted on May 14th, 2011 at 06:40 PM |
|
|
| Quote: | Originally
posted by shokwave2
| Quote: | Originally
posted by grumble
I assume that you have tried adjusting the stick,if not this may help,but as it has been jumping out for a while I would suggest a repair as a used
box is always an unknown quantity and no one wants to do the job twice. replacement.
|
Sure have. I replaced both bushings about a month ago and the only difference is less slop. I've played around with adjusting the shift plate but it
still pops out no matter where the plate is.
Also, 4th gear is noisy, which suggests wear i'm guessing. I don't want to replace the transmission only to have the same problem occur in 12 months
time.
|
I would still repair the box that you have as i is a known unit,replace the sliding gear,selector fork and bearings and at least you know where you
stand. Obviously when the box is in pieces it is easier to see what is worn.
|
|
|
cb john
Wolfsburg Wizard
Posts: 470
Threads: 6
Registered: June 22nd, 2007
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue
|
| posted on May 14th, 2011 at 06:44 PM |
|
|
| Quote: | Originally
posted by shokwave2
The detent springs sit in the three holes on the driver's side of the transmission don't they? What purpose do they serve and how do they effect the
4th gear?
|
It is just as the name implies...they hold the gear selector in the place and prevent gear from jumping out...if I remember well, correctly set detent
spring lets go at about 24 kg applied to the selector shaft at the hockey stick end..
|
|
|
grumble
Son of Jim - Creator of Good
Posts: 2668
Threads: 53
Registered: June 10th, 2008
Member Is Offline
Location: Taree
Theme: UltimaBB Pro Blue ( Default )
Mood: happy all the time
|
| posted on May 14th, 2011 at 06:58 PM |
|
|
| Quote: | Originally
posted by shokwave2
The detent springs sit in the three holes on the driver's side of the transmission don't they? What purpose do they serve and how do they effect the
4th gear?
|
To access the detent springs the box has to be dismantled first.
|
|
|
zayus
A.k.a.: Bryce
Wolfsburg Wizard
Posts: 437
Threads: 26
Registered: September 8th, 2002
Member Is Offline
Location: North of the Bridge
Theme: UltimaBB Pro Blue ( Default )
|
| posted on May 14th, 2011 at 10:21 PM |
|
|
Hey hey,
Does it pop out of gear, when you drive the car in reverse?
Have you checked the front gearbox mount?
A broken front gearbox mount can cause the shifter to jump out of gear... specially when using reverse.
|
|
|
shokwave2
A.k.a.: Matt Hamilton
Officially Full-On Dubber
Posts: 289
Threads: 28
Registered: March 7th, 2010
Member Is Offline
Theme: UltimaBB Psyche Blue
|
| posted on May 15th, 2011 at 07:51 AM |
|
|
| Quote: | Originally
posted by zayus
Hey hey,
Does it pop out of gear, when you drive the car in reverse?
Have you checked the front gearbox mount?
A broken front gearbox mount can cause the shifter to jump out of gear... specially when using reverse.
|
No, just 4th. Checked front trans mount and that's solid. Every other gear holds it's own.
|
|
|
dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
Posts: 5901
Threads: 178
Registered: January 6th, 2005
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue ( Default )
Mood: 591
|
| posted on May 15th, 2011 at 08:14 AM |
|
|
This repair will require a total disassembly.
The wear that is the root cause is probably just the tip of the wear "iceberg",
but the labour required should be close to the same as a total rebuild.
The small teeth on 4th gear that engage with the operating sleeve have likely lost their taper.
Normally this taper holds the gear in engagment, under load and decelleration also.
Once the taper is worn, there is no way it can stay in gear without help.
The teeth within the operating sleeve can wear exactly the same.
On trans built after mid 1972 the later mainshaft bearing can pound into the nose cone, allowing the whole shaft to move forward and out of gear.
| Quote: | Originally
posted by westi
That's mad Alan.
|
|
|
|
shokwave2
A.k.a.: Matt Hamilton
Officially Full-On Dubber
Posts: 289
Threads: 28
Registered: March 7th, 2010
Member Is Offline
Theme: UltimaBB Psyche Blue
|
| posted on May 15th, 2011 at 09:16 AM |
|
|
Cheers dangerous.
I figured that a total disassembly would be needed. I guess it would be wise to have the rest of the gears checked/repaired to prevent any further
wear, tear and repair in the near future. I better start saving. What does
a rebuild cost roughly, just so i know how much i'll need?
|
|
|
