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techtalk:ref:engmech02e [2019/03/10 03:26]
hippysmack created
techtalk:ref:engmech02e [2019/03/10 03:50]
hippysmack [Removing / Installing Piston Rings]
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 ====== REF: Engine Mechanicals - Sub-02E ====== ====== REF: Engine Mechanicals - Sub-02E ======
 ====== Removing / Installing Piston Rings ====== ====== Removing / Installing Piston Rings ======
 +**Removal**:​ \\
 +Some just peel the top 2 rings off by hand the same as removing the oil rings. \\
 +Older rings were notorious for breaking when one end was spread too far vertically. \\
 +This still can happen on modern rings but they can be carefully wound on / off by hand. \\
 +
 +A piston ring spreader is used below. \\ 
 +The ring spreader hooks both ends of the ring and spreads it apart making the inside diameter wider than the piston. \\
 +Then you simply center the widened ring around the piston and lift it up and off. \\
 +
 +**Caution**:​ only spread the ring just enough to remove / install the ring. ((photos by Hippysmack)) \\
 +
 |{{:​techtalk:​ref:​tools:​piston_ring_spreader_1_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_1_by_hippysmack.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​tools:​piston_ring_spreader_1_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_1_by_hippysmack.jpg?​direct&​300|}}|
  
 |{{:​techtalk:​ref:​engmech:​removing_piston_rings_2_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_3_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_4_by_hippysmack.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​engmech:​removing_piston_rings_2_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_3_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_4_by_hippysmack.jpg?​direct&​300|}}|
  
 +The oil rings are usually removed by hand. \\
 +Locate the split on the top oil ring, hold pressure against the opposite end so it doesn'​t move. \\
 +Carefully lift out and up at the same time on one end and try to raise that end at least to the top of the piston before letting go. \\
 +(so you don't scratch the side of the piston) \\
 +Then push out and around at the same time until the ring is out of the groove. ((photos by Hippysmack)) \\
 |{{:​techtalk:​ref:​engmech:​removing_piston_rings_5_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_6_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_7_by_hippysmack.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​engmech:​removing_piston_rings_5_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_6_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_7_by_hippysmack.jpg?​direct&​300|}}|
  
 +Locate the split on the bottom oil ring. ((photos by Hippysmack)) \\
 |{{:​techtalk:​ref:​engmech:​removing_piston_rings_8_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_9_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_10_by_hippysmack.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​engmech:​removing_piston_rings_8_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_9_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_10_by_hippysmack.jpg?​direct&​300|}}|
  
 +Remove the bottom oil ring in the same fashion as the top oil ring. \\
 +The expander ring comes off the same way. ((photos by Hippysmack)) \\
 |{{:​techtalk:​ref:​engmech:​removing_piston_rings_11_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_12_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_13_by_hippysmack.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​engmech:​removing_piston_rings_11_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_12_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​removing_piston_rings_13_by_hippysmack.jpg?​direct&​300|}}|
 +
 +**Installation**:​ \\
 +Installation is in reverse starting with the expander ring. \\
 +The clearance is tighter if you install the top / bottom oil rings first and it just wastes time having to take them back off to get the expander ring on. \\