Cadillac 54-6219 1954 Shop Manual page 249

11-18
ENGINE FUEL AND EXHAUST
pet-dId with upper edge of straightedge. Unloader
Gauge J_SlI_3 may he osed conveniently for this
adjustment,
5. Make Metering Rod am:d idle Vent Adjustments
as Outlined below.
d. Metering Rod Adjustment
I. Loosen get screw in metering rod lcver to
obtaht a sligltt bind on the pump coontershaft. Lift
lever ellghtly.
2. W iti Primary throttle valves seated in their
bores,
depress metering rod link until metering
PIg. 12-32 Merering Ro e4luttrnant
reds bottom against the bowl casting, as shown in
Fig. 12-32.
3. Keeping the lever in contae.t with the metering
rod liti:c. tighten set Cre
e.
Atmospheic Idle Veni Adjustreent
NOTE: The idle vent may be ad2usted with the
carburetor on tlte eItitie atid air cleaner ratmtoved.
Re s:u re the arceleratnr pttnlp end metering rods
are properly adjusted, as !l:e idle vent adjustment
depetids ml the putttp adjustment.
1. t:he
c
k velts va ive opening by Ittea so ring tlte
difference in height ar the rivet i:ead
IW
velve whli
the prin:ary throttle valve in the acer; positiatt and
then In tlte closed Itot Idle pasltion. Re sure choke
is off. This should be 1/32 Inc.].. rIg.
12-37.
2. If the vertt valve opens tnore ihan 1/32 tnclt.
it may be adjusted by simply pressing the valve
dwsn slightly, ''iti: the thrntle closed, until ti:e
proper opening is obtained.
S. If the vent valveopeieingisiessthan 1/32 i:tch,
it will be lie Ce emery to remove the Ci! Si cover with
valve end bend the sct:iating aria, Fig. li_74, tIp
lip It tly anti repeat above operations after itt aLa fliit
dust ctmver.
Tap of
Pang Sh,di Shad,] F'.'
0/IT'
Ssiow Duet
Cave
Bact
ne
TI
att: a
Voice a
Seated
g. 12- 3 Ara ci
s:otn
Pl
rnp
Ad
tatment
Fig, t2-3i Optional Pt,nw Adjiatnwnt