COOLANT PRESSURE BOTTLE
OPERATION
The pressure bottle works in conjunction with the
cooling system pressure cap to keep the coolant free
of trapped air. It provides a volume for expansion
and contraction, a convenient and safe method for
checking coolant level, and adjusting coolant level at
atmospheric pressure. It also provides some reserve
coolant to cover minor leaks and evaporation or boil-
ing losses.
REMOVAL
(1) Partially drain cooling system.
(2) Disconnect hoses from coolant pressure bottle
(Fig. 11).
(3) Remove coolant pressure bottle fasteners.
Remove coolant pressure bottle (Fig. 12).
INSTALLATION
(1) Position coolant pressure bottle to mounting
location. Make sure overflow hose is routed properly
through hole in fender inner panel and splash shield
(Fig. 12).
(2) Install coolant pressure bottle fasteners. Torque
fasteners to 5 N·m (40 in. lbs.).
(3) Connect hoses to coolant pressure bottle (Fig.
11).
(4) Fill cooling system (Refer to 7 - COOLING/EN-
GINE - STANDARD PROCEDURE).
Fig. 10 Pressure Cap
1 - OVERFLOW NIPPLE
2 - MAIN SPRING
3 - GASKET RETAINER
4 - PLASTIC SWIVEL TOP
5 - RUBBER SEALS
6 - FILLER NECK
7 - DEAERATION PRESSURE BOTTLE
8 - SPRING LOADED VENT VALVE
Fig. 11 Coolant Pressure Bottle Hoses
1 - COOLANT PRESSURE BOTTLE
2 - HEATER SUPPLY AND RETURN HOSE ASSY
3 - TO ENGINE (HEATER SUPPLY NIPPLE)
4 - TO ENGINE OIL COOLER
5 - COOLANT BOTTLE INLET HOSE
Fig. 12 Coolant Pressure Bottle
1 - FASTENER(S)
2 - COOLANT PRESSURE BOTTLE
3 - OVERFLOW HOSE
ZB ENGINE 7 - 17
PRESSURE CAP (Continued)
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