Manitowoc Grove RT880E - Page 247

Grove Published 11-10-2014, Control # 524-00 7-15
RT880E SERVICE MANUAL POWER TRAIN
7
Tier 4
The Tier 4 exhaust system (Figure 7-9) is made of a diesel
oxidation catalyst (DOC), decomposition reactor tube, a
selective catalytic reduction (SCR) unit and various tubes,
elbows and clamps.
Removal
NOTE: The down pipe insulation is an emissions compo-
nent and must be replaced if removed for service or
if damaged.
The exhaust aftertreatment components are bolted
to a single weldment that can be removed by a
properly rated lifting device. The subassembly
weighs approximately 300 lb (136 kg).
1. Remove the sheet metal guard to gain access to the
exhaust system.
2. Tag and disconnect electrical and DEF connections.
3. Remove clamp to free exhaust tailpipe from the SCR.
4. Remove the mounting bands to free the SCR.
5. Loosen the V-band clamps to remove the elbows and
decomposition reactor tube.
6. Remove mounting bands to free DOC from the mounting
bracket.
7. Loosen the V-band clamps to remove the exhaust tube
and flex hose.
8. If necessary loosen the V-band clamp and remove the
exhaust tube from the turbocharger.
9. Inspect the parts of the exhaust system and repair or
replace if damaged or missing.
Installation
1. Install the exhaust tube on the turbocharger with the V-
band clamp.
2. Attach the flex hose to the exhaust tube with the V-band
clamp.
3. Attach the exhaust tube to the flex hose with the V-band
clamp.
4. Secure the DOC to the mounting bracket.
5. Attach the exhaust tube to the DOC with the V-band
clamp.
6. Install the elbow to the DOC with a V-band clamp.
7. Install the decomposition reactor tube to the elbow with
a V-band clamp.
8. Install the elbow to the decomposition reactor tube with
a V-band clamp.
9. Secure the SCR to the mounting bracket and connect to
the elbow with a V-band clamp.
10. Install the exhaust tailpipe on the SCR. Secure the
exhaust tailpipe to the SCR with clamp.
11. Connect electrical connections and DEF line as tagged
during disassembly.
12. Install sheet metal guard.
CAUTION
Burn Hazard!
Do not touch muffler or exhaust parts until they are at
ambient temperature. Severe burning may result.