760 L4-2320cc 2.3L SOHC Turbo B23FT (1984)
Spoilers, Flaps, and Air Dams: Customer Interest
Cooling System - Temperature Gauge Reads High
SECTION
GROUP
NO.
26
114
DATE JULY, 1985
RE: INSPECTION/UPGRADING
OF COOLING SYSTEM B23FT MY 1984 WITH AUTOMATIC TRANSMISSION P70
THIS SERVICE BULLETIN IS APPLICABLE TO THE U.S. AND CANADIAN MARKETS
Complaints of high temperature gauge readings or overheating may be caused by an inaccurate temperature gauge, or a cooling system that does not meet
specifications. It is, therefore, very important to define the reason for the complaint before any parts are replaced.
The first section of this Service Bulletin covers general inspection and testing of the cooling system.
The second section provides information regarding upgrading to improve the cooling capacity at idle and stop-and-go city traffic.
1.
Inspection, Cooling System
^
Check Fan Belt Tension
^
Coolant
Check level.
Measure the coolant mixture. The anti-freeze concentration must be 50 percent; equal to a freezing point of -35 to -50~C (-31 to -58~F) Use
coolant tester (P/N 9985011-7) or equivalent.
NOTE:
ONLY VOLVO ANTI-FREEZE TYPE "C" IS ACCEPTABLE
^
Pressure Check
The pressure tester and pressure gauge (9995230-1) must be connected with a T-connection into the hose between the expansion tank and the
radiator (as illustrated). The gauge on the pressure tester is not accurate enough to detect small leaks.
Tighten expansion tank cap. Increase the pressure until the relief valve in the cap opens.
