STEERING COLUMN RATTLES We have recently received complaints of a metallic rattle in the steering column jacket, just below the wheel, when the car is driven over rough pavement. This rattle is usually caused by loose lower thrust and plain washers at the base of the shift control lever housing due to excessive end play [...]
UNEVEN TIRE WEAR 1948 THRU 1951 ALL SERIES Numerous reports from the field concerning uneven tire wear and shimmy after driving relatively low mileages indicate that owners are not following our instructions regarding the regular crisscrossing of their tires at 2000 to 4000 mile intervals. The majority of complaints seem to be from relatively hard [...]
DYNAFLOW OIL CHANGE 1948 THRU 1951 DYNAFLOW Supplements Sec. 1-A, Par. 1-4, 1951 SM and Sec. 5, Par. 20{b), 1948-49-50 Dynaflow SM. At the 25,000 mile Dynaflow oil change, the oil pan and screen should be removed from the transmission and thoroughly cleaned before the transmission is refilled with new oil. DYNAFLOW PUMP COVER [...]
CARTER CARBURETOR STALL 1951 ALL SERIES We have uncovered a Carter stall condition, on fast brake stops, caused by gas washing from the float chamber into the passage leading from the barrels to the vacumatic piston chamber (indicated by "A" in Figure 8). 1951 Buick Carter Carburetor Seating Surface This, in turn, is [...]
1951 ENGINE NUMBERS The following are 1951 Buick starting Engine numbers: Series 40 - Synchromesh - 6240128-4; Dynaflow - 6240100-4 Series 50 - Synchromesh - 6240564-5; Dynaflow - 6240100-5 Series 70 - Dynaflow 6240161-7 1951 SERIAL NUMBERS The following are 1951 Buick starting Serial numbers: Flint – 16031301 Southgate - 26050001 Linden - 36055001 Kansas [...]
When an owner complains of noisy valve lifters or any other 1951 Buick hydraulic valve lifters trouble, it is very important for the service salesman to obtain a detailed description of the operating conditions under which the lifters are noisy. This will assist the mechanic in doing a thorough and complete job, eliminating comebacks. There [...]
Whenever lifters are installed in a job and the engine is first started, it is recommended that the rocker arm cover be placed in position on cylinder head to prevent oil from being sprayed by the fan. Then run the engine from 1200 to 1500 RPM for 20 minutes or until such time as the [...]
Lifters being installed in an engine should enter the guide holes in the block freely without requiring any forcing. If a lifter is tight in a guide hole, try it in several other ones. The initial adjustment of any hydraulic valve lifter must be made only when the lifter is on the cam shaft base [...]
The following individual hydraulic valve lifter parts have been released for service and may be used in present and past style lifter assemblies:
a. Ball Travel Immediately after the lifter parts have been cleaned and inspected (See Sections 6 and 7) check the ball travel on Test Fixture J 5095 as follows: Use Sleeve KM0-30-K to mount Dial Indicator KM0-30-B so that stem of indicator bears squarely on upper end of the pin in ball travel checking attachment [...]