Article 1989 - 351-C Broken Rocker Arm Bolt

TSB #126 - November 7, 1969
(Fairlane, Mustang - 1970)


If a unit has one or more broken rocker arm bolts, check the breakaway torque in the tightening direction on the remaining bolts (on both heads). If any bolts require less than 20 ft.-lb. of torque to breakaway discard that bolt. File (or grind) the piloting chamfer edges of all sixteen fulcrums (as per Fig. 1). Buffing may be required to ensure a free fit in the head. Inspect push rods for straightness. When reassembling the rocker and bolt, apply oil to threads and bolt head and torque to 20-25 ft.-lbs. Back off four full turns and retorque to 20-25 ft.-lbs.

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PARTS
DESCRIPTIONPART NUMBERCLASSAVAIL.
Rocker Arm BoltD00Z-6A527-AC11-3-69


PRODUCTION CORRECTION: 10-15-69
WARRANTY STATUS: REIMBURSABLE
Operation: SP-6527-B-70
Time: 2.2 Hrs.

DLR. CODING: Basic Part No. 6A527 - Code No. 33

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