Drum Support: Disassembly
Match mark OD case to drum support. Remove bolts retaining oil pump drum support to OD case. Remove drum support from OD case. Using a punch, remove OD cancel valve roll pin. DO NOT remove from contacting face side. Remove OD cancel valve and spring. Cancel valve free length is .906" (23.00 mm). Remove lubrication plug from drum support. See Fig 1 . Remove one-way orifice from OD case. See Fig 2 .
DRUM SUPPORT RING-TO-GROOVE CLEARANCE
| Application | In. (mm) | Limit |
|---|---|---|
| Mazda - All | .0016-.0063 (.040-.160) | .0157 (.400) |
| Nissan (1988-89) | .0019-.0079 (.050-.200) | .0079 (.200) |