300tri belt keeps coming off

haigy · Sep 24, 2011

My original belt was frayed so I bought new fitted 3 of them today as they keep coming off and the viscous fan chews them up.

Its a 94 l red 300tri with 135 k es model

Any help please

The Mad Hat Man · Sep 24, 2011

check all the pulleys to see if they all run in line or wobble.

storm99 · Sep 24, 2011

You have put the tensioner on correctly?

jamesmartin · Sep 24, 2011

one of the pulleys the belt runs has poor bearings etc allowing it to run out of line unless one is seized like an idler etc

haigy · Sep 24, 2011

Will check tomorrow morning and reply.

Suris · Sep 24, 2011

haigy said:
My original belt was frayed so I bought new fitted 3 of them today as they keep coming off and the viscous fan chews them up.

Its a 94 l red 300tri with 135 k es model

Any help please

If the original belt was just frayed but stayed on then I sorry to say mate, you're most likely fitting the new belt(s) incorrectly.

horse62 · Sep 24, 2011

Mine chewed 2 up when i first got it

On mine it was the power steering pump if you pulled on the pulley it moved out by about 5mm. So that check is worth doing

haigy · Sep 24, 2011

So do I start the engine and see which is out of live with no belt or do I pull them by hand

jamesmartin · Sep 24, 2011

remove belt and feel first

Suris · Sep 24, 2011

jamesmartin said:
remove belt and feel first

That's just durdy :hysterically_laughi:hysterically_laughi

defcrazy · Sep 24, 2011

ive had one that did this the pulleys were all good and inline but it was the tensioner that was causing it . the tensioner was worn where it joins and piviots

Suffolkandgood · Sep 24, 2011

On mine the water pump bearing shat itself causing the pulley to run out of line and the belt to fray and snap. Also noticed the PS pump was shot as it stuck out too far, fixed it all for £60 with a new waterpump, PS pump and belt.

Richard Martin · Sep 24, 2011

defcrazy said:
ive had one that did this the pulleys were all good and inline but it was the tensioner that was causing it . the tensioner was worn where it joins and piviots

Yes, same here. A new tensioner fixed it.

Longun · Sep 24, 2011

My water pump bearings went (were going, that chewed a belt or two) take belt of and give all pulleys a good yank, there should be no play,

robert. · Sep 24, 2011

I had to replace my power steering pump as it ruined two of my belts. The power steering pump shaft begins sliding out if the pump (aprox 5-6mm) causing the pulley to be out of line.

haigy · Sep 27, 2011

The power steering pump pulley pulls out a bout 5mm.and this be why the belts have frayed and steering became heavy before the belt chewed.

What do I need to fix the problem

horse62 · Sep 27, 2011

It's time for a new pump I am sorry to say.

You can get one for around £60 and its not to bad a job to replace it.

http://www.island-4x4.co.uk/steering-pump-300tdi-anr2157-p-3316.html

or

http://www.island-4x4.co.uk/steering-pump-britpart-300tdi-anr2157-p-1272.html

just 2 examples

300tri belt keeps coming off

haigy

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storm99

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