GMC T Series 1994 Repair Manual page 519

Figure 10— Flywheel Removal
CLEANING
N O T IC E : C le a n th e e n g in e o n l y
c o ld , a n d n e v e r w h e n th e e n g in e is ru n n in g .
S p r a y in g o r p o u r i n g w a t e r o r o t h e r f lu id s o n
t h e e n g in e w h e n i t is w a r m o r h o t, o r w h e n i t
is r u n n in g , c a n c a u s e s e r io u s d a m a g e to th e
e n g in e a n d it s c o m p o n e n t s .
Remove the engine accessories before cleaning to
provide better access to engine exterior surfaces. Cover
the openings with tape to prevent the entry of water,
solvent, and dirt.
Methods used to clean the engine will depend on the
aids which are available. Steam cleaning, pressure
washing, or solvent cleaning are some acceptable
methods. Allow the engine to dry before beginning the
work.
It is important that the engine be as clean as possible
to prevent dirt from entering critical areas during disas­
sembly.
FLYWHEEL REMOVAL
Remove or Disconnect (Figures 1 and 10)
1. Bolts (18).
2. Flywheel (19).
DRAINING THE ENGINE
«--► Remove or Disconnect
1. Oil pan drain plug.
• Allow the oil pan to drain.
2. Oil filter.
3. Block drain plugs.
• Allow the coolant to drain.
N O T IC E : F o r s t e p s 1 a n d 2 , r e f e r to "N o t i c e '
w h e n i t is
o n p a g e 6 A 7 -1 .
1. Oil pan drain plug.
&
2. Block drain plugs.
OIL PUMP DRIVE REMOVAL
1. Speed sensor wire (if equipped).
2. Hold down clamp (2) and bolt (3).
3. Oil pump drive (1). Pull out to remove.
4. Gasket (4).
INTAKE M ANIFOLD REMOVAL
Tool Required:
1. Intake manifold bolts and fuel line clips.
2. Intake manifold.
3. Gaskets.
• Install J 29664-1 to the intake ports.
INJECTIO N LINE REMOVAL
)QI
• All injection line fittings at the nozzles and injection
pump.
Figure 11— Oil Pump Drive
Install or Connect
Tighten
• Oil pan drain plug to 24 N-m (17 lbs. ft.).
Tighten
• Block drain plugs to 22 N-m (16 lbs. ft.).
Remove or Disconnect (Figure 11)
Remove or Disconnect (Figure 12)
J 29664 Manifold Cover Set
Clean