Fan Shroud; Coolant Recovery System; Coolant Recovery Bottle Removal; Coolant Recovery Bottle Installation - Jeep 1987 Wrangler Workshop Manual

COOLING SYSTEMS
Start the engine and operate at 2400 RPM with
the timing light (strobe light) aimed at the fan
blades.
Within ten minutes the air temperature indicated
on dial thermometer should be 8 8 ° C ( 1 9 0 ° F ) .
Satisfactory operation of the fan drive requires
that it engage before or at 8 8 ° C ( 1 9 0 ° F ) .
Engagement is distinguishable by a definite
increase in the audible fan air flow noise. The
timing light will also indicate an increase in the
speed of fan.
When the air temperature r e a c h e s 8 8 ° C
( 1 9 0 ° F ) , remove the plastic sheet.
Satisfactory operation of the Tempatrol fan
requires the air temperature to drop 11°C (20°F)
or more. A definite decrease of audible fan air
flow noise should be noticed.
Replace the fan assembly if defective.
FAN SHftOUD
In some extreme situations, the engine fan
blades may contact the shroud. An examination
for proper engine mounting should isolate the
problem. If not, examine the shroud position.
To compensate for normal engine movement,
loosen the shroud attaching s c r e w s and
reposition the shroud to prevent the fan-to-
shroud contact. Inspect the fan for bent blades
and replace the fan if necessary.
COOLANT RECOWERY SYSTE1
The coolant recovery system consists of a
special pressure radiator cap (1), an overflow
tube (2) and a plastic coolant recovery bottle (3).
840161A(J)
Coolant Recovery Bottle Removal
Remove the tube from the radiator filler neck
fitting.
Remove the bottle from the front wheelhouse
panel.
Pour the coolant into a clean container for reuse.
Remove the tube from the bottle.
Coolant Recovery Bottle Installation
Install the tube in a replacement bottle and
clamp the tube to the bottle with a replacement
clamp.
Install the bottle on the front wheelhouse panel.
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