Coolant Pressure Bottle Cap; Engine Block Heater; Accessory Drive Belts; Coolant Pressure/Recovery Bottle Location - Chrysler 2000 LHS Owner's Manual

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DESCRIPTION AND OPERATION (Continued)
Fig. 11 Coolant Pressure/Recovery Bottle Location
1 – COOLANT RECOVERY PRESSURE BOTTLE
2 – PRESSURE CAP

COOLANT PRESSURE BOTTLE CAP

DESCRIPTION
The cooling system cap is located on the coolant
pressure bottle. The cap construction includes; stain-
less steel swivel top, rubber seals and retainer, main
spring, and a spring loaded valve (Fig. 12).
Fig. 12 Pressure Cap and Bottle
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
OPERATION
The pressure cap allows the cooling system to oper-
ate at higher than atmospheric pressure which raises
the coolant boiling point, thus allowing increased
radiator cooling capacity. The pressure cap releases
pressure at some point within a range of 110 kPa
14 kPa (16 psi 2 psi) (Fig. 12).
A spring-loaded vent valve in the center of the cap
allows the system to pressurize and depressurize
without creating a vacuum. If the valve is stuck
open, coolant will escape to the overflow hose. There
is also a gasket in the cap to seal to the top of the
filler neck.
CAUTION: Use only the pressure cap specified for
this vehicle. Use of other pressure caps can lead to
coolant loss and overheating.

ENGINE BLOCK HEATER

DESCRIPTION
The engine block heater is mounted in the cylinder
block, near the right rear corner. The block heater is
a dry cylinder type design and is powered by 110 volt
A. C. The power cord must be secured in its
retainer clips, and not positioned so it could
contact linkages or exhaust manifolds and
become damaged.
Fig. 13 Engine Block Heater
1 – BLOCK HEATER
2 – ENGINE — RIGHT SIDE
OPERATION
When power is applied (110 volt A. C.) to the block
heater, the heating element transfers heat through
the aluminum engine block and into the coolant
without directly penetrating the cooling system.

ACCESSORY DRIVE BELTS

DESCRIPTION
The accessory drive system on 2.7L and 3.2/3.5L
engines utilizes two different belts. A conventional
V-belt drives the air conditioning compressor on 3.2/
3.5L engines; Poly-V belt on the 2.7L engine. The
generator and power steering pump on all engines
are driven by a Poly-V belt.
COOLING SYSTEM 7 - 7