Valve Rocker Arm Cover Installation; Crankshaft Sprocket Installation; Timing Chain, Tensioner And Camshaft Sprocket Installation - GMC T Series 1994 Repair Manual

1. Pushrods, making sure they seat in lifters.
2. Rocker arm and ball.
3. A p p l y D r i - S l i d e M o l y l u b r i c a n t GM
P/N 1052948 or equivalent to threads of stud.
NOTICE:
Refer to " Notice" on page 6A2-1.
4. Rocker arm nuts.
hten
• Nuts to 30 N*m (22 lbs. ft.).
VALVE ROCKER ARM COVER
INSTALLATION
Figures 14 and 15
|+<-| Install or Connect
1. Gasket.
NOTICE:
Refer to " Notice" on page 6A2-1.
2. Rocker cover.
Tighten
• Bolts to 10 N*m (89 lbs. in.).
3. Crankcase vent valve by threading in retainer.
1 LONG BOLTS
2 SHORT BOLTS
3 STUD
4 NUMBERS ON GASKET INDICATE
TORQUE SEQUENCE
CYLINDER HEAD BOLT TORQUE PROCEDURE
1 TIGHTEN BOLTS IN SEQUENCE (ITEM 4) TO:
LONG BOLTS: 63 N-m (46 LBS. FT.)
SHORT BOLTS: 58 N-m (43 LBS. FT.)
2 TIGHTEN ALL BOLTS AN ADDITIONAL ANGLE
OF 90° IN SEQUENCE (ITEM 4) USING
J 36660 OR EQUIVALENT
Figure 55 - Cylinder Head
CRANKSHAFT SPROCKET
Tools Required:
J 5590 Crankshaft Sprocket Installer
-M- Install or Connect
1. Crankshaft sprocket using J 5590.
V
Important
• Be sure sprocket is fully seated against
crankshaft.
TIMING CHAIN, TENSIONER AND
CAMSHAFT SPROCKET
Figures 13 and 56
-M- Install or Connect
1. While compressing spring, use a suitable tool
(cotter pin, nail) and insert in hole (A) as shown
in Figure 56.
2. Tensioner and bolts, do not tighten.
3. Align crankshaft and camshaft timing marks with
" tabs" on tensioner, refer to Figure 56.
NOTICE:
4. Camshaft sprocket and timing chain, be sure
timing marks are aligned.
MC0016-6A2-L-EDS
INSTALLATION
INSTALLATION
Refer to " Notice" on page 6A2-1.