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COOLING SYSTEM
DIAGNOSIS AND TESTING (Continued)
DEAERATION
Air can only be removed from the system by gath-
ering under the pressure cap. On the next heat up it
will be pushed past the pressure cap into the CRS
tank by thermal expansion of the coolant. It then
escapes to the atmosphere in the CRS tank and is
replaced with solid coolant on cool down.
Condition
INSUFFICIENT ACCESSORY
OUTPUT DUE TO BELT
SLIPPAGE
BELT SQUEAL WHEN
ACCELERATING ENGINE
BELT CHIRP AT IDLE
BELT ROLLED OVER IN GROOVE
OR BELT JUMPS OFF
TEMPERATURE GAUGE INDICATION
At idle the temperature gauge could rise slowly to
about 1/2 gauge travel. The fan will come on and the
gauge could drop to about 1/3 gauge travel, this is
normal.
ACCESSORY DRIVE BELTS
Satisfactory performance of the belt driven accesso-
ries depends on belt condition and proper belt ten-
sion.
Possible Cause
(a) Belt too loose.
(b) Belt excessive glazed or worn.
(a) Belts too loose.
(b) Belts glazed
(a) Belts too loose.
(b) Dirt and paint imbedded in belt.
(c) Non-uniform belt.
(d) Misaligned pulleys.
(e) Non-uniform groove or eccentric
pulley.
(a) Broken cord in belt.
(b) Belt too loose, or too tight.
(c) Misaligned pulleys.
(d) Non-uniform grooves or
eccentric pulley.
Correction
(a) Adjust belt tension
(b) Replace and tighten as specified
(a) Adjust belt tension.
(b) Replace belts.
(a) Adjust belt tension.
(b) Replace belt.
(c) Replace belt.
(d) Align accessories.
(e) Replace pulley.
(a) Replace belt.
(b) Adjust belt tension.
(c) Align accessories.
(d) Replace pulley.
JA