Discussions in the "z20net tensioner for z22se engines" topic of this forum show that there would be a need to know how both tensioners work in order to be able to judge which one is better.
Let me present here my attempt to make such a z22se tensioner description.
I am promised by vocky to receive a photo of the z20net dismantled tensioner internal parts and then it could be possible to make an attempt to work out the z20net functional description, too.
1 tensioner body, 2 and 3 sealing ring, 4 piston, 6 segment with shaped slot, 7 pin
An oil pressure generates the power that works at the tensioner output pin. The oil enters the tensioner body via an opening in it and this opening is situated in a passage between both sealing rings.
The adaptation of the tensioner adjustment in dependence on the successive prolongation of the chain within its lifetime is ensured by the segment inserted into the piston (item 6 - its "unwrapped" view is shown in the right-top picture). To this purpose, the segment is equipped by the longitudinal and sloping shape as shown in the right-top picture.
The shaped slot is faced by a small protruding pin (SPP) inside the piston.
The spring with its terminating pins generate a power pushing the piston out of the tensioner body. In addition, the bigger pin closes the piston small frontal opening (as shown in the right-bottom picture) and this way the oil inside the tensioner would be sometime able to leak back to the engine space.
The selected segment hollow C (4 of them) limits the piston from returning back into the tensioner body when subjected to the tensioned chain power arising after the oil pressure is cancelled (engine idle state).
Tensioner initialisation - out of the engine (left-bottom picture)
Fasten the piston 4 into a vice as shown in the picture.
Insert the segment 6 with the spring and its terminating pins into the piston. Then push the piston inwards by simultaneous turning it clockwise so that the piston pin passes entire shaped slot and finally locks into the B hollow.
Tensioner intialisation - after installing it into the engine
Push onto the chain with its guide and this way onto the tensioner piston so that its pin leaves the segment B hollow. Then it is guided via the section D of the shaped slot so off as it is allowed by the actual chain length and then it keeps its position against some of the C hollows.
When the tensioned chain is pushing back to the tensioner piston, its return is limited since the piston pin snaps into a selected C hollow.
Any comments to this description are welcome.
Let me present here my attempt to make such a z22se tensioner description.
I am promised by vocky to receive a photo of the z20net dismantled tensioner internal parts and then it could be possible to make an attempt to work out the z20net functional description, too.
1 tensioner body, 2 and 3 sealing ring, 4 piston, 6 segment with shaped slot, 7 pin
An oil pressure generates the power that works at the tensioner output pin. The oil enters the tensioner body via an opening in it and this opening is situated in a passage between both sealing rings.
The adaptation of the tensioner adjustment in dependence on the successive prolongation of the chain within its lifetime is ensured by the segment inserted into the piston (item 6 - its "unwrapped" view is shown in the right-top picture). To this purpose, the segment is equipped by the longitudinal and sloping shape as shown in the right-top picture.
The shaped slot is faced by a small protruding pin (SPP) inside the piston.
The spring with its terminating pins generate a power pushing the piston out of the tensioner body. In addition, the bigger pin closes the piston small frontal opening (as shown in the right-bottom picture) and this way the oil inside the tensioner would be sometime able to leak back to the engine space.
The selected segment hollow C (4 of them) limits the piston from returning back into the tensioner body when subjected to the tensioned chain power arising after the oil pressure is cancelled (engine idle state).
Tensioner initialisation - out of the engine (left-bottom picture)
Fasten the piston 4 into a vice as shown in the picture.
Insert the segment 6 with the spring and its terminating pins into the piston. Then push the piston inwards by simultaneous turning it clockwise so that the piston pin passes entire shaped slot and finally locks into the B hollow.
Tensioner intialisation - after installing it into the engine
Push onto the chain with its guide and this way onto the tensioner piston so that its pin leaves the segment B hollow. Then it is guided via the section D of the shaped slot so off as it is allowed by the actual chain length and then it keeps its position against some of the C hollows.
When the tensioned chain is pushing back to the tensioner piston, its return is limited since the piston pin snaps into a selected C hollow.
Any comments to this description are welcome.