GMC T Series 1994 Repair Manual page 521

A. HIGH PRESSURE INLET
B. FUEL RETURN PORT
C. NOZZLE NUT
Figure 14— Injection Nozzles
2. Fuel return hose.
N O T IC E : W h e n r e m o v in g a n in je c t io n n o z z le ,
u s e J 2 9 8 7 3 . R e m o v e
3 0 - m m h e x p o r t io n .
r e s u lt in d a m a g e to th e in je c t io n n o z z le .
3. Injection nozzle using J 29873. Store the nozzles
in a clean place.
4. Gaskets.
5. Fuel return line brackets on front left and right side
of rocker covers.
6. Fuel return hose from pump.
7. Fuel return lines as an assembly.
GLOW PLUG REMOVAL
Remove or Disconnect
• Glow plugs. Use a 3/8-inch, deep socket.
EXHAUST M ANIFOLD REMOVAL
Remove or Disconnect (Figures 15, 16, and
17)
1. Exhaust manifold bolts.
2. Exhaust manifolds.
D IPSTIC K TUBE REMOVAL
4-+
Remove or Disconnect (Figure 18)
V3891
th e n o z z le u s in g th e
F a i lu r e to d o s o w ill
201. Exhaust Manifold
204. Bolts
Figure 15— Exhaust Manifold Left Side
201. Exhaust Manifold
204. Bolt
209. Cylinder Head
Figure 16— Exhaust Manifold Right Side
2. Dipstick tube (263). Pull out to remove.
3. O-ring seal from the dipstick tube (267).
COOLANT CROSSOVER
REMOVAL
Remove or Disconnect (Figures 19 and 20)
1. Glow plug inhibit switch wire.
2. Fuel filter water drain valve.
3. Clamps (62).
4. Bolts or studs (106).
204
V2133
209
204
V2140