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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
ET104 heavy duty
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<blockquote data-quote="Marcus Bowden" data-source="post: 121494" data-attributes="member: 3287"><p>We use to campaign a works Grey Flash LRO 993 with a big port head and it had TT-style pushrod tubes which consisted of a union that screwed into the pushrod holes and was a rounded taper at the bottom, the lower part of the tube was funnel-shaped with thin walls and a gland nut with a floating bevelled washer inside. The nut would be tightened up over the union in the head pulling the tube up through the normal seal which I find very good if they are new and flexible. The beauty of this system is as soon as the gland nut is slackened the head can be lifted as the normal pushrod tubes have to be extracted from the head. Also, the seals can be replaced without lifting the head !</p><p>Remove pushrod, slacken gland nut, push tube down into C/case remove the union from head pull up and out the nut and tube leaving seal exposed to be renewed easily.</p><p>I will get a set-out photo them with sizes some time, very much more practical. </p><p>bananaman</p></blockquote><p></p>
[QUOTE="Marcus Bowden, post: 121494, member: 3287"] We use to campaign a works Grey Flash LRO 993 with a big port head and it had TT-style pushrod tubes which consisted of a union that screwed into the pushrod holes and was a rounded taper at the bottom, the lower part of the tube was funnel-shaped with thin walls and a gland nut with a floating bevelled washer inside. The nut would be tightened up over the union in the head pulling the tube up through the normal seal which I find very good if they are new and flexible. The beauty of this system is as soon as the gland nut is slackened the head can be lifted as the normal pushrod tubes have to be extracted from the head. Also, the seals can be replaced without lifting the head ! Remove pushrod, slacken gland nut, push tube down into C/case remove the union from head pull up and out the nut and tube leaving seal exposed to be renewed easily. I will get a set-out photo them with sizes some time, very much more practical. bananaman [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
ET104 heavy duty
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