Page 404
REPAIR INSTRUCTIONS, PART 2
Early-production engines will use coupling
adapters in combination with the one-piece cool
tube assembly. On vehicles so equipped:
앫 Loosen and remove the clamp from the cool
tube coupling hose adapter at the EGR
cooler tube mounting flange. Remove and
discard the wire-mesh seal. Inspect the
adapter for corrosion or damage and replace
as required.
앫 Loosen and remove the clamp from the cool
tube coupling hose adapter at the EGR
mixer tube. Remove and discard the
wire-mesh seal. Inspect the adapter and
replace as required.
Do not attempt to remove the EGR MASS Flow
sensors from the tube. The sensors are an
integral part of the tube and must be replaced as
an assembly.
HOT TUBE REMOVAL
If the hot tube is to be removed, the cool tube
clamp bracket and spacer studs must also be
removed from the top of the EGR valve. This is
necessary to loosen the EGR valve on its
mounting for reinstallation of the hot tube.
1. With the cool tube removed, loosen and
remove the three retaining nuts securing the
clamp bracket to the top of the EGR valve
(Figure 487). Remove the bracket and
washers from the spacer studs.
487
Figure 487 — Clamp Bracket Removal
2. Loosen and remove the spacer studs from
the EGR valve mounting studs. DO NOT
loosen the valve retaining nuts at this time.
3. Loosen and remove the clamp connecting
the hot tube-to-EGR cooler inlet flange
(Figure 488).
488
Figure 488 — Hot Tube-to-Cooler Connection
1. Clamp Bracket
2. Spacer Studs
3. EGR Valve Retaining
Nuts
4. EGR Valve
1. EGR Gas Hot Tube 2. EGR Cooler
5-111.bk Page 404 Monday, July 10, 2006 2:26 PM
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