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

6A3-20 4.3 LITER V-6
A. Oil Ring Rail G aps
B. 2nd C om pressio n Ring G ap
C. N otch In Piston
D. Oil Ring S p a c e r G ap
(Tang In H o le O r S lot W ith Arc)
E. Top C om pressio n Ring G ap
Figure 33— Piston Ring End Gap Locations
Torsional dam per over the end of the stud. Align the
keyway in the to rsio n a l da m p e r sh a ft w ith the
crankshaft key.
Bearing, washer and nut (figure 28).
• Turn the nut to pull the vibration dam per into
place.
• Remove the tool.
Torsional dam per bolt and washer.
Tig h ten
Bolt to 95 N m (70 ft. lbs.).
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 excessive install
a new bearing. Service bearings are available in standard
size and 0.0014 mm undersize for use with new and used
standard size crankshafts.
|-»<-| Install or C o n n e c t (F ig u res 33 th ro u gh 35)
Tools Required:
J 5239, C onnecting Rod Guide Set
J 8037, Ring C om pressor
• Lubricate the cylinder walls lightly with engine oil.
• Make sure the piston is installed in the m atching
cylinder.
1. Connecting rod bearings.
• Be certain that the bearing inserts are of the
proper size.
• Install the bearing inserts in the connecting
rod and connecting rod cap.
• Lubricate the bearings with engine oil.
2. Piston and connecting rod to the proper bore.
• W ith the connecting rod cap removed, install
J 5239 onto the connecting rod studs.
B-07895