REMOVAL OF AUXILIARY PUMP
—WARNING—
Be sure that battery master is OFF before beginning any work on
electrical components to prevent electrical shock.
—WARNING—
Cover auxiliary pump switch on instrument panel with an INOP
placard, if a replacement auxiliary pump/motor assembly is not
installed before the next flight.
—CAUTION—
The auxiliary vacuum pump and motor comprise a sealed
assembly and must be removed as a single assembly.
—CAUTION—
The elapsed time indicator is matched to pump/motor assembly
and must be replaced with pump/motor assembly.
1. Remove top engine cowling.
2. Disconnect hoses from pump/motor assembly.
3. Disconnect electrical leads at terminals on pump/motor assembly.
4. Loosen band clamps and remove pump/motor assembly from aircraft.
5. Locate elapsed time indicator under instrument panel; disconnect electrical leads.
—CAUTION—
Insulate and secure leads remaining in aircraft if a replacement
elapsed time indicator is not installed immediately.
6. Remove elapsed time indicator.
7. If auxiliary vacuum pump will not be installed now, place protective covers over open end of vacuum
lines, insulate all electrical leads relative to auxiliary vacuum system, and install top engine cowling.
37 - 22 - 00
Page 37 - 11
Reissued: August 1, 1986
2E13
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL