INSPECTION
Satisfactory performance of the belt driven accesso-
ries depends on belt condition and proper belt ten-
sion.
Inspect and replace accessory drive belt under any
or all of the following conditions:
(1) Excessive wear.
(2) Frayed cords.
(3) Severe glazing.
V-Ribbed belt systems with back drive pulley may
develop minor cracks across the ribbed side (due to
reverse bending). These minor cracks are considered
normal and acceptable. Parallel cracks are not (Fig.
48).
COOLANT BOTTLE PRESSURE CAP
INSPECTION
The pressure cap upper gasket (seal) pressure
relief can be checked by removing cap. Attach the
Radiator Pressure Tool to the cap and pump air into
the cap. Pressure cap upper gasket should relieve at
124 kPa (18 psi) and hold pressure at 110 kPa (16
psi) minimum.
Remove the pressure tester hold the cap in hand,
right side up (Fig. 49). The vent valve at the bottom
of the cap should not open. If the rubber gasket has
swollen and prevents the valve from closing, replace
the cap.
Hold the cleaned cap in hand upside down. If any
light can be seen between vent valve and rubber gas-
ket, replace cap.
WARNING: THE WARNING WORDS DO NOT OPEN
HOT ON THE COOLANT BOTTLE PRESSURE CAP
IS A SAFETY PRECAUTION. WHEN HOT, PRES-
SURE BUILDS UP IN COOLING SYSTEM. TO PRE-
VENT SCALDING OR INJURY, THE COOLANT
BOTTLE PRESSURE CAP SHOULD NOT BE
REMOVED WHILE THE SYSTEM IS HOT AND/OR
UNDER PRESSURE.
Fig. 47 Water Pump Weep Passage—2.7L Engine
1 – THERMOSTAT HOUSING/COOLANT INLET
2 – WATER PUMP WEEP PASSAGE
Fig. 48 Drive Belt Inspection
1 – NORMAL CRACKS BELT OK
2 – NOT NORMAL CRACKS REPLACE BELT
Fig. 49 Pressure Cap
1 – MAIN SPRING
2 – GASKET RETAINER
3 – STAINLESS STEEL SWIVEL TOP
4 – RUBBER SEALS
5 – SPRING LOADED VALVE
6 – COOLANT PRESSURE BOTTLE
7 – FILLER NECK
8 – OVERFLOW NIPPLE
7 - 36 COOLING SYSTEM LH
CLEANING AND INSPECTION (Continued)
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