Fiero L4-151 2.5L (1985)
Push Rod: Technical Service Bulletins
Push Rod Covers - New Removal Method
Number 86-6(Gasoline)-35 Date
4/86
Subject:
NEW METHOD OF REMOVING PUSH ROD COVERS ON 2.5L L4 ENGINES
1985 AND 1986 6000, FIREBIRD, GRAND AM, AND FIERO MODELS
PUSH ROD COVER STUDS
A method has been developed to remove the push rod cover from 2.5L L4 engines without damage, using components already on the engine.
All Except Grand Am
To remove the cover, unscrew the four nuts from the cover attaching studs, reverse two of the nuts so the washers face outward and screw them back
onto the inner two studs. Assemble the two remaining nuts to the same two inner studs with washers facing inward. Using a small wrench on the inner
nut, on each stud, jam the two nuts tightly together. Again using the small wrench, on the inner nut, unscrew the studs until the cover breaks loose.
Grand Am
To remove the cover, repeat the above operation using two standard 6 mm nuts instead of two original nuts on #2 stud. This stud is too short to use nuts
with washers.
After breaking the cover loose, remove the jammed nuts from each stud. Remove the cover from the studs. Examine the stud and rubber washer
assembly and replace if either stud or washer is damaged (See Illustration for Part Numbers). Re-assemble the two studs to the middle two positions and
torque to 10 N-m (90 in.lbs.).
Use applicable labor operation number and labor time.
