V 3500 P/U 4WD V8-379 6.2L DSL (1988)
FIGURE 2. VACUUM LINE INSTALLATION
1.
Drain the coolant
2.
Cut the front heater inlet and outlet hoses approximately eight inches from the cowl (see Figure 1). It may be necessary to cut about one inch out of
each hose to allow the water heater valve
(3)
to be inserted. The exact amount of hose will depend on hose routing for different engine configurations and whether the vehicle has a rear heater
water valve.
3.
Insert the front heater water valve (3) in the hoses and install the hose clamps (1). Torque the clamps to 1.4 - 2.0 N-m (12 - 18 lbs in).
Important
If the wiring for the blower relay evidences any interference with the valve, add convoluted conduit to protect the wires and tie strap the wires as
necessary to avoid rubbing.
4.
Install the plastic vacuum line on the water valve fitting and add a 3/32 rubber sleeve for coupling (see Figure 1). Route vacuum line with the
