SERVICE REPAIR
H80FT H90FT H100FT H110FT H120FT [N005]
700 SRM 1123
Cooling System Checks
General
This section contains the repair and replacement in-
structions for the radiator, coolant level sensor, fan
assembly (pusher type), fan shroud, coolant hoses,
coolant recovery bottle, and optional debris screen.
Cooling System Checks
EXHAUST LEAKS INTO COOLING SYSTEM
WARNING
During engine operation, be careful not to
touch the fan, pulleys, or drive belts. Contact
with these parts can cause serious injury.
To check for exhaust leaks into the cooling system,
use a Combustion Leak Test Kit for this purpose. Fol-
low the manufacturer’s instructions when doing the
test.
WATER FLOW RESTRICTIONS IN
RADIATOR
WARNING
During engine operation, be careful not to
touch the fan, pulleys, or drive belts. Contact
with these parts can cause serious injury.
To check for water flow restrictions in the radiator,
run engine until it is warm.
WARNING
The radiator or other parts of the cooling sys-
tem may be hot or under pressure and can
cause serious injury. Wait 30 minutes for the
radiator to cool. Do a touch test by touching
the radiator with your hand. If the radiator is
still hot to the touch, wait another 30 minutes
before attempting to check or fix any part of
the cooling system.
Shut engine OFF and feel the radiator. The temper-
ature must be even across the radiator. (The radiator
will be hotter near the top radiator hose.) Cold spots
on radiator indicate restrictions.
If radiator has leaks, either replace the radiator or
have it repaired by trained personnel.
RADIATOR HOSES
WARNING
The radiator or other parts of the cooling sys-
tem may be hot or under pressure and can
cause serious injury. Wait 30 minutes for the
radiator to cool. Do a touch test by touching
the radiator with your hand. If the radiator is
still hot to the touch, wait another 30 minutes
before attempting to check or fix any part of
the cooling system.
Inspect all radiator hoses. If they feel sp