Fan belt keeps flipping over

rhillahorse

New Member

Posts

24

Location

Staffordshire

• Jun 19, 2015

• #1

Had the RAC out yesterday as I'd heard the fan belt slipping a bit, and then the steering went really heavy and battery light came on. RAC noticed it had flipped around, so the teeth were on the outside. He put it back and tightened it up. Started it this morning and same problem, checked under bonnet and it's flipped over again. Tried to turn it round but it seems pretty tight. Any ideas?

 

Thomo1927

Active Member

Posts

361

Location

South Walian

• Jun 19, 2015

• #2

Check the pulleys are all tight and in line , Try a new fan belt if all is well.

 

Brown

Well-Known Member

Full Member

Posts

7,877

Location

East Midlands

• Jun 19, 2015

• #3

I had a ride on lawnmower that kept doing this to its drive belts too.

Is it a flat or v belt? As above, new belt is indicated, but have a look at the pulleys - is anything misshapen or running out of line? I've had situations with pulleys breaking up in the centre so they're not running true, and bearings wearing so they're skewed in relation to the other pulleys.

 

timtheenchanteruk

Well-Known Member

Posts

4,633

Location

Leeds

• Jun 19, 2015

• #4

must be a Vee belt, no way a serpentine could flip surely?
Otherwise as above, new belt and check everythings in line/not wobbling etc.

 

rhillahorse

New Member

Posts

24

Location

Staffordshire

• Jun 19, 2015

• #5

New belt fitted today �� turned out the old knackered belt was warped

 

tacr2man

Well-Known Member

Posts

3,927

Location

England

• Jun 20, 2015

• #6

you get the roll over of the belt usually when some of the cords fracture inside the rubber part , so that it wont hold its inside smaller than the outer circumference

 

tnseal

Active Member

Posts

169

Location

South Lincolnshire

• Jun 20, 2015

• #7

I saw this as a RAC Patrol on a diesel transit once. the ribs were as someone said warped also acting like a thread and unwinding the belt. Watching TV I saw how they make these belts. so the belt could be wrong from the start and then when worn down, it just gives up. Lucky it's not a cambelt. Although I used to change both belts when I did a change. Easier to see the condition and judge the aging accordingly.