System Operational Checks
At the end of each check, if no problem is found, that
This procedure is designed so the mechanic can make
check is complete or an additional check is needed. If
a quick check of the engine using a minimum amount
problem is indicated, you will be given repair required
of diagnostic equipment. If you need additional
and group location. If verification is needed, you will be
information, read Theory of Operation, Group 9010-05.
given next best source of information:
A location will be required which is level and has
Group 10 (System Operational Checks)
adequate space to complete the driving checks.
Group 15 (Diagnostic Information)
The engine and all other major components must be at
operating temperature for some checks. A tachometer
Group 20 (Adjustments)
Group 25 (Tests)
Locate system check in the left column and read
completely, following this sequence from left to right.
Read each check completely before performing.
1 COOLING SYSTEM CHECKS
COOLANT LEVEL AND
Engine stopped, radiator cool.
YES: Go to next check.
Inspect coolant level and condition in overflow tank.
NO: Add coolant if low.
Drain and flush overflow
tank and radiator, replace
Is coolant level between FULL and LOW marks on
coolant if dirty or rusty. If
coolant is oily, check for
hydraulic or engine oil
Is coolant free of oil, foam, or rust?
leaks into cooling system.
Go to Group 0510 or