Egr Valve Removal; Lower Intake Manifold Removal; Valve Train Component Removal - GMC T Series 1994 Repair Manual

1. BOLT
2. COVER, ROCKER ARM VALVE

EGR VALVE REMOVAL

+-► Remove or Disconnect (Figure 8)
1. Bolts.
2. Exhaust gas recirculation (EGR) valve (85).
3. Gasket.
UPPER INTAKE MANIFOLD
REMOVAL
Remove or Disconnect (Figure 8)
1. Plastic cover (81).
2. Upper intake manifold bolts (14), nuts (15), ignition
coil (6), and stud (5).
3. Upper intake manifold (18), support (86), and gas­
ket (16).
LOWER INTAKE MANIFOLD
REMOVAL
Important
Make sure the ends of the fuel lines are properly
sealed.
Remove or Disconnect (Figure 8)
1. Lower intake manifold bolts (8).
2. Lower intake manifold (12), lift brackets (17), and
gaskets (13).
Figure 7— Rocker Arm Cover and Components
9
Important
• Do not disassemble the CPI unit. It is only serviced
as an assembly. For information on the upper and
lower intake manifold components, refer to the
Driveability, Emissions, and Electrical Diagnosis
Manual for the appropriate model vehicle.
VALVE TRAIN COMPONENT
REMOVAL
Important
• Store all reusable components in an exact order,
so they can be reassembled in the same wear
pattern location from which they were removed.
Mark the front end of the retainer (20).
Remove or Disconnect (Figure 9)
1. Rocker arm nuts (21), balls (22), and rocker arms
(23).
2. Pushrods (24).
3. Bolts (19), retainer (20), restrictors (25), and
hydraulic lifters (26).
4. Guide assembly.
5. Hydraulic lifters (26).
• Remove the lifters one at a time and place
them in an organizer rack.
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