Refer CAR 41
41 Maintenance schedule and maintenance instructions
(1) The holder of the certificate of registration for a class B aircraft
must ensure that all maintenance required to be carried out on the
aircraft (including any aircraft components from time to time
included in or fitted to the aircraft) by the aircraft’s maintenance
schedule is carried out when required by that schedule.
Penalty: 50 penalty units.
(2) A person must not use a class B aircraft in an operation if there is
not a maintenance schedule for the aircraft that includes provision
for the maintenance of all aircraft components from time to time
included in, or fitted to, the aircraft.
As Yr Right has pointed out, the CAAP is a method of complying with the regulations and rightly suggests that you need to maintain the components as required by the OEM. Including those damn vac pumps, unless the vac pump has wear indicator.