Chrysler IIIH, Assembly Manual

Page: 56 / 100

Caution:
To avoid damage to the piston rings, they must
be installed in the following order:
• Oil ring expander (5)
• Oil ring lower side rail (4)
• Oil ring upper side rail (3)
• No. 2 (intermediate) piston ring (2)
• No. 1 (upper) piston ring (1)
Note:
Typical piston shown. Do not use a piston
ring expander to install the piston rings.
Install the oil ring expander (1).
Install the oil ring lower side rail by placing one end
between the piston ring groove and the oil ring
expander. Hold this end firmly and press down the
portion to be installed until the side rail is in position.
Install the oil ring upper side rail in the same manner as
the lower side rail.
The No. 1 (upper) piston ring (1) and
No. 2 (intermediate) piston ring (3) have
a different cross section. Install the
rings with manufacturers I.D.
mark (dot) (2) facing up, towards the
top of the piston.
Install the 2nd and top piston rings using the same method
by placing one end of the ring into the piston ring groove
and rolling the ring around the piston into the groove.
Use care to prevent over expanding the piston ring during
this operation and also not to allow the gap edge to scratch the
piston land area.
Do Not Use Piston Ring Expanders as these are low tension rings and over expanding will change the tension.
Part Numbers:
3H96040‐TOP
RING, SPECIAL TEST, UCR (.025" GAP, 96.040 BORE)
3H96040‐SECON RING, SPECIAL TEST, LCR (.035" GAP, 96.040 BORE)
3H96040‐EXP
EXPANDER, SEQ. IIIH
3H96040‐RAIL RAIL, SEQ. IIIH
Revision DRAFT
Short Block Assembly
Section 7
Mar‐16
Piston Ring Install
Sheet 10