Flex-a-Lite 52181C3 Corvette Radiator & Fan Kits - Manual

INSTALLATION INSTRUCTIONS
Removal of Existing Fan, Shroud & Radiator
(Instructions shown are for Rad. / Fan kit #52180C3.
Installation of Rad. / Fan kit #52181C3 should be similar)
BE SURE THE ENGINE IS COOL BEFORE PROCEEDING. 1.
Disconnect cable from negative post of battery. Battery is located inside the car, behind driver’s seat, within 2.
an enclosure.
Removal of hood is recommended for better access to engine compartment.
3.
Note: Take note of hood and hinge alignment for reinstallation later.
Note: Enlisting the help of other people will greatly reduce the risk of damage to the hood or fenders.
Drain cooling system by first removing fill cap on expansion tank (if equipped) and then loosening the
4.
petcock on the bottom of the radiator on the driver’s side. Allow coolant to drain until finished.
Remove the upper radiator hose from radiator inlet tube and move out of the way.
5.
Loosen the alternator bracket to relieve tension on the fan belt, then remove belt. 6.
Remove bolts (2ea.) securing top of fan shroud to radiator support. 7. (see Detail A)
From below the vehicle; remove short nut and bolt sets (2ea.) holding shroud mounting flanges to “L” 8.
brackets bolted to lower splash shield plate. (see Detail B)
On stock fan configurations remove clutch and clutch fan. If the factory clutch and clutch fan have been 9.
replaced with a direct drive mechanical fan, slide fan shroud toward engine to reach the front of the
mechanical fan. Reach in between shroud and radiator to access fan mounting bolts. Remove bolts and
then fan.
(see Detail C)
Rev. 07-30-12 99181 Page 1 of 6
Radiator ..................................... 1 ea.
Pre-Mounted Fan ...................... 1 ea.
Bracket, 27-1/2” extension ......... 1ea.
Instruction Sheet ....................... 1 ea.
Flex-a-lite Decal ......................... 1 ea.
*Hardware Kit ............................ 1 ea.
*Wiring Kit ................................. 1 ea.
* Hardware Kit Includes: top radiator mounting bracket (2ea),
hex bolt 5/16-18 x 1-3/4” (2ea), hex bolt 5/16-18 x 2” (4ea), flat
washer 5/16 (6ea), fender washer 5/16 (2ea), lock nut 5/16
(2ea), rubber spacer 5/16 hole (2ea), T-bolt (4ea), flat washer
1/4 (4ea), lock nut 1/4 (4ea), aluminum spacer block (2ea),
adhesive backed foam strip (4ea), fitting for radiator overflow (1ea)
* Wiring Kit Includes: control module (1ea), red 10 gauge wire (12ft.),
black 10 gauge wire (12ft), red 14 gauge wire (8ft), green 14 gauge
wire (5ft), tie straps (6ea), fuse holder (1ea), 40 amp fuse (1ea), fuse
tap ATO (1ea), fuse tap ATM mini (1ea), rubber probe cap (1ea), temp.
control knob (1ea), blue tap-in electrical connector (1ea), yellow ring
connectors (2ea), yellow butt connectors (4ea), blue female spade
connectors (3ea), yellow female spade connector (4ea), screw 1/4-
20 x 1/2 (2ea)
Note: Always read instructions
and verify kit contents prior to
installation.
Chevrolet Corvette C3
Note: Manual transmission preferred; automatic transmission requires a remote cooler. (pt. #4116C3 available)
#52180C3
(Detail A)
Remove bolts 2ea.
(Detail B)
Remove nut & bolts 2 sets.
(Detail C)
Move shroud toward engine,
then access bolts for removal
Corvette Radiator & Fan Kits
#52181C3
Fits 1968-1972 Fits 1970-1982