Click here to return to the home page.
Image of a road.
Who's Online Now
2 registered members (RB1, The Austrian), 196 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Top Posters(30 Days)
John V6 488
+8Rich 380
TBM 251
Peter J 199
Newest Topics
Rare Morgan - Supersports 1959 - for sale
by MDS61. 27/05/20 09:49 PM
Resto Show 2020
by PhilRoyle. 27/05/20 07:08 PM
Which tyres for 2011 Plus 4 Sport ?
by DJWuk. 27/05/20 05:18 PM
Plus 8 50th sounds
by +8Rich. 27/05/20 05:03 PM
Clear front indicator lenses for a Series 2
by wps7581. 27/05/20 03:02 PM
Rear lap belts
by TBM. 27/05/20 01:05 PM
Might be a 4/4 4str? - might not?
by JB62. 27/05/20 11:26 AM
Latest Photos
Engine running!
Slow progress
Social distancing
Somewhere in Scotland?
M3W Cupholder
Newest Members
jaktomaten, Bewifourfour, Sam8888, Brilliant Green, ninrum
6938 Registered Users
Forum Statistics
Forums34
Topics38,342
Posts628,142
Members6,938
Most Online1,033
Dec 28th, 2019
Today's Birthdays
Maskellman, Matt C, mphcarpaintings, TeBe-Swe
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Alternator or water pump bearing #627195
31/03/20 12:32 PM
31/03/20 12:32 PM
Joined: Feb 2019
Posts: 103
Norfolk
T
thelastgizmo Offline OP
L - Learner Plates On
thelastgizmo  Offline OP
L - Learner Plates On
T

Joined: Feb 2019
Posts: 103
Norfolk
I've gradually been going over my '74 4/4 and have just got round to tightening up the alternator belt which was quite slack. I now have a squeel/rumble coming from the front end and assume it is either alternator or water pump bearing. Is there an easy way to determine which it will be. I'm trying to find a long enough rod to act as a stethoscope but no luck yet. I'm a little nervous about getting too close to the fan!
I've slackened the belt off a bit but still some noise present.

Re: Alternator or water pump bearing [Re: thelastgizmo] #627197
31/03/20 12:38 PM
31/03/20 12:38 PM
Joined: Oct 2019
Posts: 631
Aberdeenshire
Image Offline
Talk Morgan Regular
Image  Offline
Talk Morgan Regular

Joined: Oct 2019
Posts: 631
Aberdeenshire
If you pop the belt off you may he able to feel the wear by waggling the respective pulleys ...
Also may be able to feel roughness or tight spots by turning them.

K

Re: Alternator or water pump bearing [Re: thelastgizmo] #627219
31/03/20 01:55 PM
31/03/20 01:55 PM
Joined: May 2014
Posts: 2,712
Forest of Dean
SteveT Offline
Talk Morgan Expert
SteveT  Offline
Talk Morgan Expert

Joined: May 2014
Posts: 2,712
Forest of Dean
As K says it should feel rough plus try rocking the fan blades, you might find some movement if the bearing is on its way out. My money would be on the pump as alternator bearings last ages providing the belt hasn't been too tight.

Or, fit a smaller belt/a stocking/string and just run one of them to check.

Ive just fitted as new water pump bearing on my MG, the bearing was shot and made a noise like a main bearing rumble.


Steve

110th +4 AM Chiltern Green
1939 Cammy Velo
1959 BSA GoldStar DBD34
LR 90 SW
1948 MG TC
Re: Alternator or water pump bearing [Re: thelastgizmo] #627221
31/03/20 02:07 PM
31/03/20 02:07 PM
Joined: Aug 2013
Posts: 2,766
Solihull
Spanner Juggler Offline
Talk Morgan Expert
Spanner Juggler  Offline
Talk Morgan Expert

Joined: Aug 2013
Posts: 2,766
Solihull
Mechanics stethoscope, use a wooden hammer shaft held against the alternator and ear pressed to hammer head (actually a sawn off broomhandle works better if you can get away with nicking a piece) be very careful no loose clothing as the engine needs to be running and by touching it against the alternator and then against the water pump body you can easily hear which is the noisiest expect some noise but a loud rumble can be easily heard!

BR
Colin


BR Colin
Who used to be a Spanner Juggler
Re: Alternator or water pump bearing [Re: thelastgizmo] #627223
31/03/20 02:09 PM
31/03/20 02:09 PM
Joined: Aug 2013
Posts: 2,766
Solihull
Spanner Juggler Offline
Talk Morgan Expert
Spanner Juggler  Offline
Talk Morgan Expert

Joined: Aug 2013
Posts: 2,766
Solihull
If you worried about the fan blades take the fan off and put the bolts back in but Use spare washers to pack out the distance and then run it without the cooling fan on and you have less to worry about catching your home-made stethoscope on. But have to say been doing it for years and never had a problem if you’re careful it’s easy to do.

BR
Colin


BR Colin
Who used to be a Spanner Juggler
Re: Alternator or water pump bearing [Re: thelastgizmo] #627224
31/03/20 02:20 PM
31/03/20 02:20 PM
Joined: Feb 2019
Posts: 103
Norfolk
T
thelastgizmo Offline OP
L - Learner Plates On
thelastgizmo  Offline OP
L - Learner Plates On
T

Joined: Feb 2019
Posts: 103
Norfolk
OK. Very strange. I took the fanbelt off and ran the engine (briefly). Noise still there! Before that used a breaker bar as a stethoscope and couldn't notice anything odd with either bearing. The noise is periodic, every few seconds. I'm wondering if it could be something like the release of some pressure somewhere. Could the crankcase breather system get gunged up and do something like that? I'm not familiar with the crossflow engine. The engine is warm now and noise seems to have reduced if not disappeared. I'll have another investigate when it cools down.

Re: Alternator or water pump bearing [Re: thelastgizmo] #627228
31/03/20 02:34 PM
31/03/20 02:34 PM
Joined: Oct 2019
Posts: 631
Aberdeenshire
Image Offline
Talk Morgan Regular
Image  Offline
Talk Morgan Regular

Joined: Oct 2019
Posts: 631
Aberdeenshire
Pulling the oil filler cap off should relieve the pressure if it's that

K

Re: Alternator or water pump bearing [Re: thelastgizmo] #627231
31/03/20 03:04 PM
31/03/20 03:04 PM
Joined: Aug 2013
Posts: 2,766
Solihull
Spanner Juggler Offline
Talk Morgan Expert
Spanner Juggler  Offline
Talk Morgan Expert

Joined: Aug 2013
Posts: 2,766
Solihull
I’m sure you’ve checked the obvious but the crankshaft pulley is not loose on the keyway is it? Or main front bolt loose? The PCV canister can certainly gunge up and they do regularly but never heard one make a rumbling noise. Another trick is when it’s making the noise one by one place your hand on all the panels bars struts that you can find in the engine bay the number of times I’ve heard noises that are just something loose and vibrating in sympathy would amaze you.

I had a buzzing noise that I could swear was coming from under the heater the other week on the Morgan turned out to be the Simmons mirror upper clamp where it hooks over the windscreen, it had moved fractionally sidewards and was touching one of the sunvisor studs put a finger on it the noise stopped instantly so out with Dave‘s favourite medium when I got back and problem solved.

BR
Colin


BR Colin
Who used to be a Spanner Juggler
Re: Alternator or water pump bearing [Re: thelastgizmo] #627242
31/03/20 03:57 PM
31/03/20 03:57 PM
Joined: May 2010
Posts: 6,899
Llanelli
sospan Offline
Talk Morgan Sage
sospan  Offline
Talk Morgan Sage

Joined: May 2010
Posts: 6,899
Llanelli
Colin, as a bit of a thread drift, I have a Simmons mirror too. The top hook resulted in water drips coming in when the hood was up and all efforts to seal it failed. Have you had similar? I solved it by lowering it and double sided tape to fix it to the screen.
I echo your comments about testing brackets etc from experience.


Red Plus8
Re: Alternator or water pump bearing [Re: sospan] #627243
31/03/20 04:07 PM
31/03/20 04:07 PM
Joined: Aug 2013
Posts: 2,766
Solihull
Spanner Juggler Offline
Talk Morgan Expert
Spanner Juggler  Offline
Talk Morgan Expert

Joined: Aug 2013
Posts: 2,766
Solihull
Originally Posted by sospan
Colin, as a bit of a thread drift, I have a Simmons mirror too. The top hook resulted in water drips coming in when the hood was up and all efforts to seal it failed. Have you had similar? I solved it by lowering it and double sided tape to fix it to the screen.
I echo your comments about testing brackets etc from experience.


Hi there

This current one I have is on a 4/4 sport with a lift the dot hood which I have yet to put up so no idea how sealed it would be yet.

I was shown a superb little dodge by Steve Simmons many many years ago when I had one on my +8 which had one of his hoods. Steve took an angle grinder to the top fixing so that it was just a small shield shaped flat piece of stainless, he then used a rear view mirror fixing pad and stuck it to the windscreen just below the top frame looked a perfectly neat job and solve the problem instantly of water getting under the top rail.

BR
Colin


BR Colin
Who used to be a Spanner Juggler
Page 1 of 2 1 2

Moderated by  Aeroman, Simon 

Powered by UBB.threads™ PHP Forum Software 7.7.1