Piper SARATOGA PA-32-301 Maintenance Manual page 96

1.
DRIFT PIN
SMALL
CENTER DRILL
PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
3.
4.
5.
6.
Figure 20-3. Cherrylock Rivet Removal
CHERRYLOCK RIVETS, REMOVAL. (Refer to Figure 20-3.)
Should it be necessary to remove an installed cherrylock rivet, the following procedures are
recommended:
1. In thick material remove the lock by driving out the rivet stem, using a tapered steel drift pin. (See
View 1.)
- NOTE -
Do not drill completely through the rivet sleeve to remove a rivet as
this will tend to enlarge the hole.
2. If the rivets have been installed in thin sheets, driving out the locked stem may damage the sheets. It is
recommended that a small center drill be used to provide a guide for a larger drill on top of the rivet stem, and
the tapered portion of the stem be drilled away to destroy the lock. (See View 2.)
3. Pry the remainder of the locking collar out of the rivet head with the drift pin. (See View 3.)
4. Drill nearly through the head of the rivet, using a drill the same size as the rivet shank. (See View 4.)
5. Break off rivet head, using a drift pin as a pry. (See View 5.)
6. Drive out the remaining shank with a pin having a diameter equal to the rivet shank. (See View 6.)
20-03-00
Page 20-03
1D24
Revised: August 11, 1983