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7 A 4 4
1977 PONTIAC SERVICE MANUAL
CHECK TRANS. OIL LEVEL
I
CHECK ENGINE TUNE
INSTALL OIL PRESSURE GAGE
I
CONNECT
TACHOMETER TO ENGINE
3
C A U T I O N : T O T A L
RUNNING
TIME
FOR
T H l S
COMBINATION
NOT
TO
EXCEED 2
MINUTES.
I
I
CHECK O I L PRESSURES I N FOLLOWING MANNER
,
1
RANGE
OIL PRESSURE
NORMAL P.S.I.
NEUTRAL-BRAKES APPLl ED
ENGINE AT 1000 RPM
55 to 70
DRIVE IDLE
2
,
4
DRIVE-BRAKES APPLIED
ENGINE AT 1000 RPM
SET ENGINE IDLE TO
60 TO 85
SPEC1 FICATIONS
DRIVE-BRAKES APPLIED
ENGlNEATl00ORPM
60 TO 90
SUPER OR LO-BRAKES APPLIED
ENGINE AT 1000 RPM
135 TO 160
L
5
I
DOWNSHIFT SWITCH ACTIVATED
I
1
7
I
GOVERNOR CHECK-SEE "CONTROL
I
DROP OF 10
REVERSE-BRAKES APPLl ED
ENGINE A T 1000 RPM
95 TO 150
381 7
FIG. 7A4-4 PRELIMINARY CHECKING PROCEDURE CHART
I
VEHICLE ON HOIST, DRIVING WHEELS OFF GROUND, SELECTOR I N DRIVE,
BRAKES RELEASED; RAISE ENGINE TO 3000 RPM, CLOSE THROTTLE AND READ
PRESSURE BETWEEN 2000 AND 1200 RPM.
VALVE-GOVERNOR LINE PRESSURE CHECK"
P.S.I. OR MORE
DRIVE-30 MHP-CLOSED THROlTLE
.
8
ON ROAD, OR ON HOIST'
55 TO 70
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