General Information; Cooling System; Engine Accessory Drive Belts; Coolant Tank - Jeep 1997 Grand Cherokee Service Manual

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COOLING SYSTEM

GENERAL INFORMATION (Continued)
CAUTION: Plastic tanks, while stronger than brass,
are subject to damage
wrenches.
If the plastic tank has been damaged, the tank
and/or gaskets are available for service repair. Tank
replacement should be done by qualified personal
with proper equipment.

ENGINE ACCESSORY DRIVE BELTS

The accessory drive components are operated by a
single, crankshaft driven, serpentine drive belt. Ini-
tial belt adjustment is done with an adjustable ten-
sioner pulley. After
performed, an automatic belt tensioner is used to
maintain correct belt tension at all times.
Fig. 1 Coolant Flow—2.5L Diesel Engine—Typical
by impact, such
the initial adjustment
CAUTION: When installing a serpentine accessory
as drive belt, the belt MUST be routed correctly. If not,
the engine may overheat due to water pump rotat-
ing in wrong direction. Refer to the engine Belt
Schematic in Specification section at the end of this
group for the correct belt routing.

COOLANT TANK

A pressurized, plastic coolant tank is used with the
cooling system. This separate tank should be consid-
ered part of the radiator. The tank is located at the
right-rear side of the engine compartment and is
is mounted as the highest point of the cooling system.
This will allow any air or vapor exceeding the pres-
sure/vent cap rating to escape through the cap. Cool-
ant will flow through the tank at all times during
engine operation whether the engine is cold or at
ZG