Pontiac Fiero 1988 Service Manual page 268

POWER HEAD ASSEMBLY 5D2-7
30. R E T A I N E R
4 1 . POWER PISTON
A S S E M B L Y
4 4 . R E T A I N E R I N S T A L L E R
G A G I N G P R O C E D U R E
Tool Required:
J 22647 Push Rod Height Gage
(Figure 15}
Measure
After assembly of booster, position J 22647 Gage
(43) over piston rod (12).
If piston rod (12) height is not within GO-NO
GO limits of gage (43), use a service-adjustable
piston rod to obtain correct height.
HM0013 5D2 AB
Figure 13 Retainer Assembly
12. PISTON ROD
43. GAGE J22647
a 12
HM0Q15-5D2 AB
Figure 15 Gaging Piston Rod
Figure 14 Installing Retainer Into Piston