944 S L4-2479cc 2.5L DOHC (1987)
Oil Line: Customer Interest
Engine - Oil In the Cooling System
May 17, 1991
Model
Group
944T/S2
1
Part Identifier
Number
1737
9105
Subject:
Engine Oil in the Cooling System
ATTENTION: Service Manager/Service Technician
This bulletin supersedes Technical Bulletin Group 1, Number 9001, Book G, pages 13 & 14.
Models Affected:
944 Turbo, 944 S2
Concern:
Engine oil in the cooling system.
General Information:
The VIN number /model year range in Technical Bulletin Group 1, Number 9001 no longer applies. This
bulletin applies to all 944 Turbos and 944 S2's.
Figure 1
Figure 2
Service Information:
Whenever the oil cooler thermostat housing is removed from the engine, whether for oil in the coolant or other
repair, the depth of the connector pipe bore in the crankcase (arrow Figure 1) and the connector pipe itself
(arrow Figure 2) must be measured.
Repair Information:
1. Measure the depth of the connector pipe bore in the crankcase.
Correct depth is 14.2 mm-0.4 mm
If the bore depth exceeds 14.2 mm, install spacing washer, Part Number 928 107 166 00, in the crankcase bore
with Loctite 638.
Note:
Clean washer and bore thoroughly to ensure proper cure of the Loctite.