Lumina APV V6-191 3.1L (1990)
18.
Six screws (147) and two dips (122) from heater core cover (112) (Figure 9).
19.
Heater core cover (112) and seal (118) from temperature case (126) (Figure 9).
20.
Heater core lower bracket retaining screw (late model vehicles).
21.
Heater core lower bracket (late model vehicles).
22.
LH retaining screw from heater core upper bracket (late model vehicles).
-- Loosen RH retaining screw from heater core upper bracket (late model vehicles).
-- Adjust heater core upper bracket to allow heater core removal.
23.
Heater core inlet/outlet tubes from tube/case seal (120) (Figure 9).
24.
Heater core (123) and seal (119) from temperature case (126) (Figure 9).
INSPECT:
1.
Heater core (123) for signs of damage, leakage or internal restriction. Repair or replace as necessary.
2.
Tube/case seal (120) for damage or deformation. Replace as necessary.
3.
Heater core seals (118 and 119) for damage or deformation. Replace as necessary.
INSTALL OR CONNECT:
1.
Heater core inlet/outlet tubes into tube/case seal (120) and heater core (123) and seal (119) into temperature case (126) (adjusting heater core
upper bracket if equipped) (Figure 9).
2.
LH retaining screw to heater core upper bracket - do not fully tighten (late model vehicles).
3.
Heater core lower bracket with retaining screw (late model vehicles).