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QUESTION: Service Sheet 514 - D1 Plunger shock assembly / function
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April 15, 2019 - 9:16 pm
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I've a project 1950's D1 I'm building from bits, & for which I'm looking to confirm I've understood the function of the 'sliding member' tube.

That tube part 90-4115 is bushed internally & the Service Sheet indicates the need for alignment of the tube to the grease nipple on the rear wheel carrier 90-6051 which is then secured in place by it's pinch bolt.

At which point the rear wheel carrier is effectively 'locked' onto the tube.

The steel washers, springs, & shrouds are all obvious in their placement around the sliding member tube. That complete assembly is then compressed and placed into position in the frame. Then the centre column 90-4117 slots are set up so they will align with the frames pinch bolt holes. That centre column is then drifted through the sliding member tube & bolted.

This is how I've assembled the units, but it looks like I've created 'rigid' suspension !

As I see it the only way anything 'slides' on this setup, would be if the rear wheel carrier 90-6051 has its pinch bolt removed - What have I missed !?

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April 16, 2019 - 12:53 am
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the outer  tube  4113 slids along  tube 4117       and  the  wheel spindle  holders    90-  6050  & 6o51   MUST  BE  bolted  tite  to tube 4113   with the grease  hole   in line   for  the  grease niple   to  load grease  between both  tubes    ,, it sounds  like  you  got  it  rite     you  usly  have to  put  all  your  body   wate  on  the to  move  them     to  chech   bush  90- 6050 &  6051  thay  will move  a  bit  sideways  until the  wheel  is fited

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April 16, 2019 - 2:58 pm
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HI Sunny,

Thank you I can indeed rotate the wheel spindle carriers around the centre column 90-4117 - job done then !


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