Timing Belt - Adjustment of Revised New Belt
Bulletin 86-6-13Date Apr. 86
Ref. No. 86-106-6
SUBJECT: TIMING BELT ADJUSTMENT
MODELS AFFECTED: 1982-1986 1.8L OHC ENGINE (VIN CODE O & VIN CODE J)
NOTICE: ALL BELT TENSION ADJUSTMENTS ARE TO BE MADE ON A COLD ENGINE. THIS IS A PROCEDURAL CHANGE FROM PREVIOUS BULLETINS AND SECTION 6A1-12, STEP 5, OF THE 1986 SERVICE MANUAL. ALSO PLEASE DISCARD ALL PREVIOUS 1.8L OHC ENGINE TIMING BELT ADJUSTMENT PROCEDURE INSTRUCTIONS.
A new 20 mm wide timing belt, Part No. 90234902 has been released for production and service on 1982 thru 1986 1.8L OHC engines.
After a new timing belt is installed and tensioned, the engine must be turned over (without starting) approximately 10 revolutions. As the new belt takes a set position, a substantial tension loss will occur, and the timing belt must then be re-tensioned.
FIGURE 1 - TIMING BELT TENSION GAUGE:
When a new 20 mm wide timing belt is installed or an existing 19 mm wide timing belt is re-tensioned, it must be tensioned to within the band (between the two arrows on perimeter of gauge dial face identified as 1.8L OHC) as shown in illustration. The band represents 150N (30 lbs.) on a cold engine. The timing belt tension gauge, J-26486-A was an essential tool which dealers received approximately May, 1982. This same tool was reworked and released for the 1.8L OHC engine. Because of the importance of correct timing belt tensioning, it is imperative all dealerships use the gauge that has accurate calibrations.
Use applicable labor time and labor operations for this operation.