Torsional Damper Installation; Piston And Connecting Rod In S Ta Lla Tio - Chevrolet 1988 Light Duty Truck Repair Manual

i - + R em o ve or D is c o n n e c t (F ig u re 5)
J-35468 from the seal (158).
TORSIONAL DAMPER
INSTALLATION
Install o r C on n ect (F ig u re s 5 and 53)
Tool Required:
J-23523-E Torsional Dam per Rem over/Installer
N O T IC E : The in e rtia w e ig h t s e c tio n o f th e
to rs io n a l d a m p e r is a s s e m b le d to th e h u b w ith a
ru b b e r typ e m a te ria l. The c o rre c t in s ta lla tio n
p ro c e d u re s (w ith th e p ro p e r to o l) m u s t be
fo llo w e d o r m o v e m e n t o f th e in e rtia w e ig h t
s e c tio n o f the h u b w ill d e s tro y th e tu n in g o f the
dam pe r.
1. Key (163).
2. Stud (item C, figure 53) to the crankshaft (154).
Thread the stud fully into the tapped end of the
crankshaft.
3. Torsional dam per (162) over the end of the stud.
Align the keyway in the vibration dam per shaft with
the crankshaft key.
4. Bearing, washer, and nut (figure 53).
• Turn the nut to pull the vibration dam per into
place.
• Remove the tool.
5. Bolt (160) and washer (161).
T ig h ten
• Bolt (160) to 80 N m (60 ft. lbs.).
4.8 LITER L6 6A4-27
Figure 54— Piston Ring Gap Location
PISTON AND CONNECTING
ROD INSTALLATION
CONNECTING ROD BEARING SELECTION
Connecting rod bearings are of the precision insert type
and do not use shim s for adjustm ent. DO NOT FILE
RODS OR ROD CAPS. If clearances are found to be
excessive, a new b e a rin g w ill be req u ire d . S ervice
bearings are available in standard size and 0.001-inch and
0.002-inch undersize for use with new and used standard
size cra n k s h a fts , and in 0.010-inch and 0.020-inch
undersize for use with reconditioned crankshafts.
T h e s im p le s t, m o s t a c c u ra te w a y to m e a s u re
connecting rod bearing clearance is with the use of
gaging plastic. This wax-like material com presses evenly
b etw een th e b e a rin g and jo u rn a l s u rfa c e s w ith o u t
dam aging them.
Selective fitting of the bearing inserts is necessary to
obtain close tolerances. For this reason you may use, for
e xa m p le , o ne s ta n d a rd in s e rt w ith o ne 0.001-inch
u n dersize in se rt, w h ich w ill de cre a se th e clearance
0.0005-inch from using two standard inserts.
-► <- Install or C o n n e c t (F ig u res 5 and 54 th ro u g h
56)
Tools Required:
J-5329 Connecting Rod Guide Set
J-8037 Ring C om pressor
Make sure the cylinder walls are clean. Lubricate
the cylinder wall lightly with engine oil.
Make sure the piston is installed in the m atching
cylinder. Refer to " Piston and C onnecting Rod
A ssem blies," previously in this section.
1
Connecting rod bearing inserts (112 and 113).
.
• Be certain that the inserts are of the proper
size.
• Install the inserts in the connecting rod (108)
and connecting rod cap (110).
2. Piston (107) and connecting rod (108) to the proper
bore.