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Post by rar350 on Jun 18, 2024 10:51:26 GMT 1
When trying to set the adjustment on my 350LC oil pump, the pulley will not rotate far enough. With the cable disconnected the maximum rotation I can get on the pulley is with the cable nipple hole next to the setting pin. It will not rotate any further round to achieve the setting with the circle next to the pin.It feels as if it comes to a positive stop. Anyone come across this before or is it a faulty pump? Thanks!
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Post by arrow on Jun 18, 2024 14:07:22 GMT 1
Sounds to me, like you have 1¼ turns of tension in the pulley spring, instead of the correct ¼ turn of tension.
The pulley will just stop because the spring wraps round the pulley boss and won't move anymore. New spring required as it will now be severely strained and out of shape.
I have the pulley springs. I had them made to the correct specification.
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Post by rar350 on Jun 18, 2024 15:50:04 GMT 1
Just had a quick look at the pump and it looks like your diagnosis is spot on. Many thanks because I wasn't aware of the 1/4 turn tension, so saved a lot of head scratching.
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Post by arrow on Jun 18, 2024 16:17:11 GMT 1
Is the top casting, (held on with the 4 crosshead screws) the same colour as the main casting, or is it more of a charcoal grey?
Quite important this.
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Post by rar350 on Jun 18, 2024 16:46:18 GMT 1
It's the same colour.
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Post by arrow on Jun 18, 2024 17:06:56 GMT 1
Excellent. That casting has a steel insert in the end for the screw thread. No worries of over tightening the screw when you refit the pulley, and nipping on the shaft preventing its movement. A 3.5mm socket helps immensely.
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Post by rar350 on Jun 18, 2024 19:39:49 GMT 1
How do I go about buying a replacement pulley spring?
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Post by arrow on Jun 18, 2024 19:51:18 GMT 1
Pm received, and replied to.
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