knocking wheel
- zabo
- Old School!
- Location: earth
- Contact:
- Status: Offline
knocking wheel
noticed a knocking from my rear wheel at low speeds, maybe its there at higher but cant tell.
Pulled the drum and everything looked fine- tightened up everything while i was there, trans oil good... noise still happening
Pulled the drum and everything looked fine- tightened up everything while i was there, trans oil good... noise still happening
60 beetle
78 bus
78 bus
- hambone
- Post-Industrial Non-Secular Mennonite
- Location: Portland, Ore.
- Status: Offline
Re: knocking wheel
Bearings? CVs?
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http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: knocking wheel
No CVs on that car.hambone wrote:Bearings? CVs?
[jewish mother kvetch on]
You would have KNOWN that if Zabo had MENTIONED the YEAR of his car so we can TRY to answer his question . . .
[jewish mother kvetch/off]
Zabo, jack it up and use stands under the shocks so both rear wheels are off the ground but under suspension load.
Start engine and accelerate in 3rd gear to mid-range, clutch in/shut off engine and listen for bearing noise as wheels spin down. Feel for any mechanical ticks coming through body shell.
IF YES: bearing problem
IF NO: repeat above and gently apply ebrake as wheels spin down and listen for same noise.
IF YES: drum out-of-round kicking shoes and ebrake lever
IF NO: test bearings while coasting down abandoned quiet smooth road with engine off and report back.
ColinSureI'llReplyInATimelyManner
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- zabo
- Old School!
- Location: earth
- Contact:
- Status: Offline
Re: knocking wheel
Yes i did fail to mention the year: 1960, 40hp engine/ later swingaxle.
One other clue- this evening the sound was more pronounced on deceleration, braking seemed to have no effect.
The knocking is pretty rhythmic but then gets a little out of step.
Colin I'll try the test you mentioned above. This morning i did try going through the gears on stands but heard nothing.
It will probably be the weekend before i report back with findings.
One other clue- this evening the sound was more pronounced on deceleration, braking seemed to have no effect.
The knocking is pretty rhythmic but then gets a little out of step.
Colin I'll try the test you mentioned above. This morning i did try going through the gears on stands but heard nothing.
It will probably be the weekend before i report back with findings.
60 beetle
78 bus
78 bus
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: knocking wheel
More pronounced on decel steers us towards wheel bearing/drums. Please be extremely alert to the following:zabo wrote:Yes i did fail to mention the year: 1960, 40hp engine/ later swingaxle.
One other clue- this evening the sound was more pronounced on deceleration, braking seemed to have no effect.
The knocking is pretty rhythmic but then gets a little out of step.
Colin I'll try the test you mentioned above. This morning i did try going through the gears on stands but heard nothing.
It will probably be the weekend before i report back with findings.
An intact axle nut/cotter pin does NOT prove that the axle nut is tight enough! The spacer can wear, reducing the torque of the axle nut to a damaging degree that accelerates wear. Please feel free to remove the cotter pin and see if the axle nut has loosened. Your axle nut specification is 253 ft/lbs on that car?
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- zabo
- Old School!
- Location: earth
- Contact:
- Status: Offline
Re: knocking wheel
no bearing noise on jack up test or ebrake noise.
After another test drive this morning I have to say it is dependent on braking.
I hear no general bearing noise on the hill test.
The knocking does not seem to appear until the car is thoroughly warmed up.
I am confident axles are torqued sufficiently.
The ebrake is also not working on the left side although all linkage was intact when i checked the other day.
Will take drum off again to inspect once it warms up- freezing here this morning!
After another test drive this morning I have to say it is dependent on braking.
I hear no general bearing noise on the hill test.
The knocking does not seem to appear until the car is thoroughly warmed up.
I am confident axles are torqued sufficiently.
The ebrake is also not working on the left side although all linkage was intact when i checked the other day.
Will take drum off again to inspect once it warms up- freezing here this morning!
60 beetle
78 bus
78 bus
- zabo
- Old School!
- Location: earth
- Contact:
- Status: Offline
Re: knocking wheel
it looks like my left ebrake cable is stretched/frayed- will pick up a new on tuesday.
I dont think thats making the noise but i guess its possible if the lever does not have enough tension on it.
I dont think thats making the noise but i guess its possible if the lever does not have enough tension on it.
60 beetle
78 bus
78 bus
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: knocking wheel
The cable applies no tension whatsoever to the lever. The spring on the cable merely ensures that the ebrake releases fully by *pushing* the clevis rearward. The shoe return spring actually pulls the ebrake lever forward, thus the two are attempting to make space between the cable clevis and the lever.zabo wrote:it looks like my left ebrake cable is stretched/frayed- will pick up a new on tuesday.
I dont think thats making the noise but i guess its possible if the lever does not have enough tension on it.
BUT
your intuition may be picking up on the fact that a frozen/frayed/damaged ebrake cable has been known to bow inside the brake drum area and it can rub against a rotating drum.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- zabo
- Old School!
- Location: earth
- Contact:
- Status: Offline
Re: knocking wheel
well after more than a week of road testing i have to say the new ebrake cable seems to have been the remedy.
60 beetle
78 bus
78 bus
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: knocking wheel
And you get to enjoy nice handbrake action too.zabo wrote:well after more than a week of road testing i have to say the new ebrake cable seems to have been the remedy.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles