Heater Water Hoses

Removal

The following procedure and illustrations apply to the heater water hose (18472) installations on the 5.8L (351 CID), 7.3L (445 CID) and 7.5L (460 CID) engines.

1. Drain the coolant from the cooling system.

2. Loosen the clamps and remove the heater water hoses from the vehicle.

3. Cut a length of heater water hose from bulk stock which is the same length and diameter as that of the heater water hose that has been removed. Bulk hose will require some modification on vehicles with E4OD automatic transmissions because the T in the hose has a factory crimp for retention to the tee.

Installation

1. Route the heater water hoses as shown in the applicable illustration.

2. Install the heater water hoses on their fittings and tighten the retaining clamps to 2-3 Nm (18-27 lb-in).

3. Fill and bleed the cooling system. Refer to Section 03-03 of the Powertrain, Drivetrain Manual.

4. Check for coolant leaks and proper operation of the system.

   Heater Hose Installation, 5.8L (351 CID) MFI Engine (Heater Hose Routing Same Without A/C)

   

   Item	Part Number	Description
   1	—	Existing Screw (Part of Cowl Top Outer Panel)
   2	19D734	A/C Manifold and Tube
   3	19N704	A/C Compressor Hose Clip
   4	—	Dipstick (Part of 6007)
   5	9D930	Fuel Charging Wiring
   6	19703	A/C Compressor
   7	19618	A/C Evaporator Temperature Control Thermostat
   8	18472	Heater Water Hose
   9	19850	A/C Evaporator Housing
   10	19B679	A/C Hose Clamp (2 Req'd)
   11	—	Wiring (Part of 14401)
   12	376240-S100	Hose Clamp (2 Req'd)
   13	8146	Fan Shroud
   14	19835	Condenser to Evaporator Tube
   15	—	U-Nuts (Part of 8146)
   16	9E799	Speed Control Vacuum Reservoir
   17	—	Tag — A/C Service Instructions (Part of 19C808)
   18	8005	Radiator

   Heater Hose Installation, 7.3L (445 CID) Diesel Engine (Heater Hose Routing Same Without A/C)

   

   Item	Part Number	Description
   1	—	Existing Screw (Part of Cowl Panel)
   2	19N704	A/C Compressor Hose Clip
   3	19D734	A/C Manifold and Tube
   4	19B679	A/C Hose Clamp
   5	389766-8287	Heater Hose Connection
   6	18599	Hot Water Heater Elbow Connection
   7	19835	Condenser to Evaporator Tube
   8	18472	Heater Water Hose (Inlet) (Auto Trans.)
   9	18472	Heater Water Hose (Outlet)
   10	18472	Heater Water Hose (Inlet)
   11	—	Locator (Part of 14401)
   12	19850	A/C Evaporator Housing
   13	—	Wiring (Part of 14401)
   14	—	Existing Retainer (Part of 19850)
   15	19E561	A/C Cycling Switch
   16	—	A/C Service Instructions Tag (Part of 19C808)
   17	—	Junction (Part of 18C266)
   18	—	Plate (Part of 6007)
   19	389772-S100	Clamp
   20	—	Connector (Part of 8005)
   21	8005	Radiator
   22	N62332	U-Nut
   23	180331	Bracket Assy
   24	N606677-S2	Screw
   25	—	Ear (Part of 10346)
   A	—	Tighten to 2-3 Nm (18-27 Lb-In)
   B	—	Tighten to 7-11 Nm (62-97 Lb-In)

   Heater Hose Installation, 7.5L (460 CID) Engine (Heater Hose Routing Same Without A/C)

   

   Item	Part Number	Description
   1	19D734	A/C Manifold and Tube
   2	19N704	A/C Compressor Hose Clip
   3	N805334-S2	Bolt
   4	19703	A/C Compressor
   5	19B679	A/C Hose Clamp
   6	19835	Condenser to Evaporator Tube
   7	18472	Heater Water Hose
   8	19850	A/C Evaporator Housing
   9	18472	Heater Water Hose
   10	19B679	A/C Hose Clamp
   11	8146	Fan Shroud
   12	376240-S100	Clamp
   13	8548	Water Bypass Tube (E4OD)
   14	8005	Radiator
   A	—	Tighten to 17-23 Nm (13-17 Lb-Ft)
   B	—	Tighten to 2-3 Nm (18-27 Lb-In)