33
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900194 REV B 09/16/19, PG 33 OF 42
Heater
Hoses
Hose
Clamps
From Heater
Control Valve
to Heater Core
From Inta
Manifold to
Heater Control
From Heater Core
to Water Pump
Heater
Hoses
Hose
Clamps
From Heater
Control Valve
to Heater Core
From Inta
Manifold to
Heater Control
From Heater Core
to Water Pump
Heater
Hoses
Hose
Clamps
From Heater
Control Valve
to Heater Core
From Intake
Manifold to
Heater Control
Valve
NOTE: Flow Direction Follows
Molded Arrow on Valve.
Heater Control Valve Installation
Attach a 5” piece of heater hose (not supplied) to the heater control valve, and secure it using a #12 hose
clamp (See Figure 1 and Photo 1, below).
Install the heater hose on the heater control valve onto the lower heater hardline (right side), and secure it
using a #12 hose clamp (See Photo 2, below). NOTE:
Ensure proper flow direction through the heater
control valve (the flow direction follows the molded arrow on the valve).
Install a length of heater hose (not supplied) from the intake manifold to the heater control valve, and secure it
using (2) #12 hose clamps (See Photo 3, below).
Install a length of heater hose (not supplied) from the heater core to the water pump, and secure it using (2)
#12 hose clamps (See Photo 4, below).
Plug the heater control valve connector into the connector on the main wiring harness (See Photo 5, below).
1.
2.
3.
4.
5.
NOTE 1: Vintage Air Systems use 5/8” connections. On engines equipped with 3/4” hose nipples, these
will need to be removed and replaced with 5/8” nipples (not supplied). For water pumps with a cast-
in 3/4” heater outlet, a 3/4” x 5/8” reducer fitting (not supplied) or molded hose (Vintage Air Part #
099010) will need to be installed in the heater hose.
Figure 1
Attach 5” Piece of
Heater Hose
Photo 1
Photo 2
Photo 4
Photo 3
Install Hose from Heater Control Valve
onto Lower Heater Hardline and Secure
With #12 Hose Clamp
Heater Control Valve
461171
Install Length of Heater Hose from Heater Core to
Water Pump and Secure with (2) #12 Hose Clamps
Plug Heater Control Valve Connector
into Connector on Main Wiring Harness
Photo 5
#12 Hose Clamp
Install Length of Heater Hose From
Intake Manifold to Heater Control Valve
and Secure it with (2) #12 Hose Clamps
