Installing Oil Pickup Tube And Screen; Cutting Bearing Cap Rope Seal; Applying Bearing Cap Sealant; Oil Pump (Crankcase Front Cover) - Pontiac TRANS AM 1977 Service Manual

Table of Contents

Advertisement

140 ENGINE
6A1-9
Fig. 6A1-17 Cutting Bearing Cap Rope Seal
Fig. 6A1-16 Installing Oil Pickup Tube and Screen
into the space provided by loosening the bearing caps.
4. Use a suitable punch to push seal out of upper bearing
enough to permit removal with a pair of pliers. It may be
necessary to rotate crankshaft while pulling on seal to aid in
removal.
5. Pre-form a new braided fabric upper seal in the
bearing cap using Tool J 23625.
6. Taper end of seal and insert a piece of soft wire
through seal at a position approximately 1/4" from end.
Wrap wire around seal to form a secure attachment.
7. Insert wire attached to seal through seal opening in
crankcase and around crankshaft. Then, using a screwdriver
or similar tool, start seal into opening.
8. Pull seal into position with wire, while working seal
back and forth at the point of contact with seal opening.
Continue working seal back and forth, turning crankshaft if
needed until seal is in position.
9. Torque all bearing caps, except the rear main, to 65
lbs. ft. Cut ends of seal flush to 1/64" below bearing edge,
making a clean cut and leaving no raveled edges.
10. Install seal in bearing cap using Tool J 23625; cut
ends of seal flush with cap (Fig. 6Al- 17).
11. Place a piece of gaging plastic the full width of
crankpin and parallel to crankshaft on the journal. Install the
bearing cap and evenly torque nuts to 65 lbs. ft. Do not turn
crankshaft with the gaging plastic installed.
12. Remove bearing cap. The flattened gaging plastic
will be found adhering to either the bearing shell or journal.
Without removing the gaging plastic, measure its compressed
width (at the widest point) with the graduation on the gaging
plastic envelope.
13. If the clearance is within specifications, the seal is
seated properly. Remove gaging material; install and torque
bearing cap.
Fig. 6A1-18 Applying Bearing Cap Sealant
14. Install rear main bearing cap vertical split line
sealant; follow instructions received with sealant kit to ensure
proper mixture of curing agent and base material. Apply
sealing compound to cavity forcing it firmly into place to
ensure that no air gaps exist (Fig. 6A 1-1 8).
15. Install the engine oil pan and bame as previously
outlined.
OIL PUMP (CRANKCASE FRONT
COVER)
Removal
1. Remove engine front cover, accessory drive pulley,
timing belt, timing belt lower cover and crankshaft timing
sprocket.

Advertisement

Table of Contents
loading

This manual is also suitable for:

Firebird 1977

Table of Contents