Pressure Relief Valve Installation; Alternate Air Door - Piper PA-24 Comanche Service Manual

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PIPER COMANCHE SERVICE MANUAL
7C·29. l.asraI1atioa
Of
PreIun IlcIicf
Valve.
a. Clean mourninc
flantu.
b. InsWl relief valve with "0"
riaI."ct
on compreuor diJchaqe box and secure with bola.
c. Install bottom cowl. (Refer to parqrapb 7C-7.)
7C-30. lDductioa Air FD • .
7C·31.
Removal Of
Air
'ileer.
L
LooteD the riplt side cowl fuccnen and
lift cowl.
b. LoolCD air box door fasr:cnm and opeD door.
c. Pull air filter out of box.
7C·32. Service
IllJa'UcQoDt.
a.
Blow fUter OUt with compressed air from the pskct side or wash in warm water and mild
dcteraen t •
b. Dry t!lorouPlY.
c.
When opcrarina in dusty conditions inspect filter daily.
7C·33. lam".cion Of Air
,ilter.
a. With the gasket side of the ruter down, slide it iDto the air box.
b. Ascertain that
me
maininl sprinp are holding the ruter securely .
c. Close air box ciaor iUld secure.
d. Close cowl and fasten.
7C.34. Alta'ft&te Air Door. The altcm&ce air door. located
in
the induction system. on the front side of
the
air
plenum. between the air filter and the turbocharger units.
is
to
provide a source of air should there
be an
1ir
stoppqe tbrou.h the fdter system. The followiq should be checked during inspection:
a. Door scaJs arc
titht
and hinps arc secure.
b. Aetuate the door to determine that it
is
not
Sticking
or binding.
c. Check cockpit conuol cable for free crave!.
d.
Check r.hat when :he control knob in the cockpit is full in.
the cable is adjusted to allow
approximately one-ei,hth inch between the aetuatinl arm roller and the door when fUlly closed.
e. Check that the sprina tension of the door is tigbt enough to allow the deer to remain dosed at full
engine rpm.
yet
should there be an air scoPPlIe through the mter it will be drawn open.
POWER PLANT
ISSUED: 8/18/72
2 Hl