Issued 10/18/82


CATEGORY:  TECHNICAL

ATTN:      ALL DMC DEALERS/SERVICE MANAGERS

SUBJECT:   ENGINE COOLING SYSTEM BLEEDING


Because the De Lorean is equipped with an aluminum engine, it
is extremely important that the engine's cooling system be
absolutely free of any air.  If the cooling system is opened
for service or any other reason or after a leak has been
repaired THE SYSTEM MUST BE BLED.

Bleeding Procedure:

     1)  Fill the coolant reservoir tank with fresh 50/50 coolant
         mixture.

           NOTE:  The coolant level must not fall below the
                  minimum (MIN) level indicated on the reservoir
                  tank during the bleeding procedure to avoid
                  air from being drawn into the system.

     2)  Attach a suitable length of hose to the bleed screw
         located on the thermostat housing.  Route this hose
         clear of all belts and pulleys and place the other end
         into a container holding coolant mixture.  The hose
         must remain in the coolant during the bleeding.

     3)  Start and run the engine until normal operating temp-
         erature is reached.

                  Thermostat starts to open at 185°F

                  Thermostat full open at 212°F

     4)  While running the engine between 1500-2000 RPM, open
         the bleed screw to allow the trapped air to escape.
         Close the bleed screw.  Because of the low pressures
         and remote location of the radiator in this system,
         this step must be repeated until all air pockets are
         removed.


                                       Continued . . .




Reimbursement

Due to the special attention required, we are increasing the
time allowance for this procedure.

Oper. No.             Description                   New Time Allowance

13101                 Pressure & Leakage Test              .7 hr

13102                 Drain & Refill Cooling System        .8 hr
                      (includes #13101)

13103                 Remove & Replace Radiator           2.5 hr
                      (includes #13102)

13104                 Remove & Replace Hose, Coolant       .9 hr
                      (includes #13102)

Please inform all personnel accordingly.




John J. Patro
Technical Publications Manager

JJP:slb