| DATE |
MAINTENANCE |
| Sep 2006 |
installed on C11 |
| 21 May 2008 |
removed from C11 |
| May 2008 |
replaced Scotch yoke bushings and Kap-Seal, replaced dowel pin on one valve
clothespin, baked displacers; new stage3 seal; reuse stage1 and stage2 seals; installed HIA-068, WBA13 #123D (tested with 159D initially, but this amp was particularly unstable now running at 59/12.7/3.1/3.1/3.3 K |
| 24 Jun 2008 |
installed on C9 |
| 26 Apr 2010 |
stage3 running at 6 K; warmed up at Cedar Flat, replaced stage2 and stage3 seals |