what is 'meaning' ? Sound from shaft or gears

jp_in_hyd · 9th December 2008, 14:43

Hi Guys,
I get sounds while in lowspeed <40kmph, which is supposed to be caused by 'meaning' of Iam not sure if that means the play in between the gear teeth or Does it refer to drive shaft. I drive a Boelro 4WD.

Any insights are well appreciated. Thank you.

..jp..

Shashank.A · 10th December 2008, 09:45

too less information to respond.

iceman91 · 10th December 2008, 10:08

What sounds?
be a bit more specific please.
Since you are saying shaft or gear does that mean it is a sound coming from engine/gearbox? is it a rattle? grinding noise?

jp_in_hyd · 10th December 2008, 11:07

Iceman91/shashank
Its grinding noise 'thud' sound for every revolution (<40kmph only) .
From what I understand, it was intially supposed to be coming from
'front_drive_shaft connecting transfer_case to front_differential'
where front_drive_shaft meets the front_differential
(wht the chief mechanic tole me at m&m dealer Automotive)
He R&R'd shaft-front_differential but the sound still persists,
So, Iam assuming its the backlash (in the female-male gear teeth).
1. Is backlash is also referred as meaning ?
2. Finding problem this around 68K - is it normal ?
FYI. I drive myself and has been driving for the last 15 yrs.

condor · 10th December 2008, 11:46

Quote:

Shashank.A

: too less information to respond.

@Shashank, too little asked for him to respond !

Helps if you state what are the details you are looking for, so he can provide enough information for you to respond to him.

Quote:

jp_in_hyd

: I get sounds while in lowspeed <40kmph,

@JP:
* what is the gear-speed ratio you use, for each of your gears ?
* In what gear does this sound happen ?
* Is it heard at some specific event - turns, bumps, braking, accleration etc ?
* Any recent incidents (before this started, like hitting a bump at high speeds etc ) ? Has anything happened recently - something bigger ?

alpha1 · 10th December 2008, 11:50

What is this "meaning"?

ilangop · 10th December 2008, 17:25

Hi, does this thud sound appear when ever you accelearte from zero, and cases when you keep the vehicle runnig at some gear (acc pdeal at rest), and suddenly press it hard. If so then it means there is some play mostly between the crown and pinion inside the differential. You could get this solved by adding an appropriate shim inside the differential case. If possible get under the vehicle and try rotating the propeller shaft. You can physically feel the play if there is some.

9th December 2008, 14:43	#1
jp_in_hyd BHPian Join Date: Aug 2008 Location: hyderabad Posts: 26 Thanked: 2 Times	what is 'meaning' ? Sound from shaft or gears Hi Guys, I get sounds while in lowspeed <40kmph, which is supposed to be caused by 'meaning' of Iam not sure if that means the play in between the gear teeth or Does it refer to drive shaft. I drive a Boelro 4WD. Any insights are well appreciated. Thank you. ..jp..
	() Thanks

10th December 2008, 09:45	#2
Shashank.A BHPian Join Date: Sep 2007 Location: New Delhi Posts: 484 Thanked: 10 Times View My Garage	too less information to respond.
	() Thanks

10th December 2008, 10:08	#3
iceman91 Senior - BHPian Join Date: Nov 2004 Location: melbourne/banga Posts: 1,961 Thanked: 34 Times View My Garage	What sounds? be a bit more specific please. Since you are saying shaft or gear does that mean it is a sound coming from engine/gearbox? is it a rattle? grinding noise?
	() Thanks

10th December 2008, 11:07	#4
jp_in_hyd BHPian Join Date: Aug 2008 Location: hyderabad Posts: 26 Thanked: 2 Times	Iceman91/shashank Its grinding noise 'thud' sound for every revolution (<40kmph only) . From what I understand, it was intially supposed to be coming from 'front_drive_shaft connecting transfer_case to front_differential' where front_drive_shaft meets the front_differential (wht the chief mechanic tole me at m&m dealer Automotive) He R&R'd shaft-front_differential but the sound still persists, So, Iam assuming its the backlash (in the female-male gear teeth). 1. Is backlash is also referred as meaning ? 2. Finding problem this around 68K - is it normal ? FYI. I drive myself and has been driving for the last 15 yrs.
	() Thanks

10th December 2008, 11:50	#6
alpha1 Senior - BHPian Join Date: Apr 2007 Location: LandOfNoWinters Posts: 2,093 Thanked: 2,604 Times	What is this "meaning"?
	() Thanks

10th December 2008, 17:25	#7
ilangop BHPian Join Date: Jul 2008 Location: Chennai Posts: 992 Thanked: 903 Times View My Garage	Hi, does this thud sound appear when ever you accelearte from zero, and cases when you keep the vehicle runnig at some gear (acc pdeal at rest), and suddenly press it hard. If so then it means there is some play mostly between the crown and pinion inside the differential. You could get this solved by adding an appropriate shim inside the differential case. If possible get under the vehicle and try rotating the propeller shaft. You can physically feel the play if there is some.
	() Thanks