Grand Cherokee 2WD V8-5.2L VIN Y (1998)
Radiator Hose: Description and Operation
Rubber hoses route coolant to and from the radiator, intake manifold and heater core. The louver radiator hose is spring-reinforced to prevent collapse
from water pump suction at moderate and high engine speeds.
Vehicles equipped with the 5.9L engine and an the "max" cooling package (electric fan) have radiator upper and lower hoses consisting of stainless steel
"tees" located between two hoses. The tees house the electric cooling fan low and high speed switches and can only be serviced by replacing the hose
assembly.
WARNING: Constant tension hose clamps are used on most cooling system hoses. when removing or installing, use only tools designed for
servicing this type of clamp, such as special clamp tool (number 6094). snap-on clamp tool (number HPC-20) may be used for larger (clamps.
always wear safety glasses when servicing constant tension clamps.
CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment
clamp with matching number or letter.
Inspect the hoses at regular intervals. Replace hoses that are cracked, feel brittle when squeezed, or swell excessively when the system is pressurized.
For all vehicles: In areas where specific routing clamps are not provided, be sure that hoses are positioned with sufficient clearance. Check clearance
from exhaust manifolds and pipe, fan blades, drive belts and sway bars. Improperly positioned hoses can be damaged, resulting in coolant loss and
engine overheating.
Ordinary worm gear type hose clamps (when equipped) can be removed with a straight screwdriver or a hex socket. To prevent damage to hoses or
clamps, the hose clamps should be tightened to 4 Nm (34 inch lbs.)torque. Do not over tighten hose clamps.
When performing a hose inspection, inspect the radiator lower hose for proper position and condition of the internal spring.
