Ascender 2WD V8-5.3L (2004)
Heater Hose: Technical Service Bulletins
A/C - Rear Heater/A/C Line Replacement
TSB IB04-12-S004
Rear Heater And Air Conditioning (A/C) Pipe Replacement
Issue Date: March, 2004
Affected Vehicles
2003 to current model year Isuzu Ascender.
Service Information
The following information is to be used when replacing or repairing A/C and Heater lines.
NOTE:
^
Tubing Repair Kit J 41425 is available and contains the new style LOK fittings.
^
Do not service the rear A/C or heater lines as a complete unit. Service the rear A/C or heater lines as a sectional repair.
^
Use the J 41425 when any of the following actions damage the rear A/C or heater lines:
^
Rub-through
^
Collision damage Leakage in the system
Minimum Tube Length Required Table
NOTE:
^
When sectioning the rear A/C or heater lines, ensure that the correct minimum length remains in the straight part of the line on both sides of the
splice.
^
Follow the Straight Line Repair procedure in order to repair line damage in a straight section of line.
^
Follow the Line Sectioning Repair procedure in order to repair any damage in a bend area. Do not repair the rear A/C or heater lines in a bend
area, replace the lines. Maintaining the original line shape will prevent vibrations and rub-through.
Straight Line Repair
1.
Recover the refrigerant, if repairing the A/C lines. Refer to Refrigerant Recovery and Recharging
2.
Drain the coolant, if repairing the heater lines. Refer to Draining and Filling Cooling System in Engine Cooling.
3.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
