Dealer Service Information Bulletin 68-I-13 – Revised Procedure For Evaporator Core Removal

Evaporator Core — Removal Procedure

1. Depressurize the refrigeration system.
2. Disconnect the oil bleed and equalizer line at the P.O.A. valve.
3. Disconnect P.O.A. inlet and expansion valve outlet fittings and cap all openings.
4. R&R insulation at the expansion valve thermo bulb and remove clamps.
5. On Pontiac models, disconnect the water control valve and hose and remove from bracket.
6. On Pontiac models, remove the screw retaining the expansion valve to the bracket.
7. Remove the screw or screws from the P.O.A. valve bracket.
8. Remove screws retaining the left half of the case (inboard side) to the dash and to the right half of the case.
9. On 1967 Pontiacs, remove the spark plug wire bracket.
10. Gently pry the case from the sealer (on Pontiac models, use care not to destroy the gasket).
11. On Tempest V-8, use a long bar and pry up slightly on the right side of the engine to allow removal of the case; on Pontiac models, tilt the top of the case towards the engine. On Firebird and Tempest 6-cyl. models, remove the left case half.
12. Remove the core.
13. To replace, reverse the removal procedure.
14. Use care to reseal the case halves and the case to the dash.

Evaporator Case Left Half — Removal Procedure

1967 and 1968 Pontiacs: Follow the evaporator core removal procedure above; the case half can then be removed.

1968 Tempest Models:

1. Remove screws attaching the left case half to the dash and to the right case half. Remove the expansion valve bracket retaining screw.
2. Pry gently on the case and separate from the dash and right case half.
3. On V-8s, use a long bar to lift the right side of the engine slightly, which allows removal of the case.
4. Remove the case and reseal.

1967–68 Firebird 6-Cyl. Models:

1. Remove the P.O.A. valve from the bracket, disconnect the inlet oil bleed and equalizer line, and lay aside.
2. Disconnect the resistor and relay wires.
3. Remove the case attaching screws, pry loose, and remove the case. Carefully reseal when assembling.

Revised Flat-Rate Times

Column headers: P = Pontiac, T = Tempest, F = Firebird. Values are in hours.

Flat-Rate Times — Evaporator Service Operations

Operation	Model Year	P (Pontiac)	T (Tempest)	F (Firebird)
013-150-00 Evaporator Core — Replace & Seal — 01 6-Cylinder	68	—	.9	.9
	67	—	2.9	.9
013-150-00 Evaporator Core — Replace & Seal — 02 V-8	68	1.3	1.2	2.4
	67	1.3	2.9	2.4
013-152-00 Evaporator Case Assembly — Replace — 01 Left Half (Inboard) — 6-Cylinder (Do not add for evacuate and charge time on 1968 Tempest)	68	—	.6	.9
	67	—	2.9	.9
013-152-00 Evaporator Case Assembly — Replace — 01 Left Half (Inboard) — V-8 (Do not add for evacuate and charge time on 1968 Tempest)	68	1.3	.8	2.4
	67	1.3	2.9	2.4

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.