GMC 1989 Light Duty Truck Repair Manual page 35

Figure 36— Piston Ring Position and Installer
Guide
Figure 3 7 — Installing th e Piston Ring
A-6 AIR CONDITIONING COMPRESSOR 1B1-17
32 . P is to n
Figure 38— Sizing the Piston Ring
• P u s h J 2 4 6 0 8 - 5
J 2 4 6 0 8 -2 (guide).
• If the piston ring is off-positive in the groove,
reposition by moving with a fingernail or a
b lunt-edge tool.
• J 2 4 6 0 8 -5 (installer) will keep the J 2 4 6 0 8 -2
(guide) inside w hen the piston ring is installed
on the piston (32).
• R em o ve the g uid e from the installer and do
not store the guide in the installer b ecau se the
seal will be stretched and w ea ken ed during
storage. This can cause the seal not to hold
the ring installer segm en ts tight enough to the
J 2 4 6 0 8 -2 (guide) w hen installing the piston
ring (33) to the piston (32).
4. Piston (32) to J 2 4 6 0 8 -6 (figure 38).
• Lubricate the piston ring (33) a re a with 5 2 5
viscosity refrigerant oil.
• R o ta te th e piston (3 2 ) an d
J 2 4 6 0 8 -6 at a slight an g le until the piston is
inserted ag ain st th e c e n te r stop
K. N o tc h
Figure 3 9 — Gaging the Piston Ring Size
F -01624
( i n s t a l le r ) d o w n o v e r
ring (3 3 ) into
of J 24608-6.
F-01625