Toro Groundsmaster 7210, Руководство по обслуживанию

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Removing the Exhaust System (continued)
2. Unlatch the hood and raise it.
3. Remove the exhaust tube as shown in Figure 11 .
Note: The exhaust system DPF and DOC can be removed from the exhaust
system without removing the entire exhaust from the engine. Refer to the
Yanmar Service Manual for complete disassembly and assembly procedures.
4. Disconnect all the electrical connectors from the DPF.
5. Remove the 2 nuts (item 44 in Figure 10 ) that attach the DPF to the DPF stay.
6. Remove the 4 nuts (item 45 in Figure 10 ) that attach the DPF to the exhaust
manifold.
7. Remove the 2 bolts (item 43 in Figure 10 ) that attach the DPF stiffener to
the DPF stay.
8. Remove the DPF from the engine.
9. Remove and discard the gasket (item 1 in Figure 10 ).
Installing the Exhaust System
Note: Ensure that all of the sealing surfaces of the exhaust system are free of
unwanted material or damage that can prevent a tight seal.
1. Install new gasket on the exhaust manifold (item 46 in Figure 10 ).
2. Position the DPF on the engine.
Note: Finger tight all the fasteners to avoid stressing of exhaust system
components and finally tighten the fasteners in order of exhaust system
flow i.e. manifold or header to block, tube to muffler, muffler to DOC, DOC
to exhaust tube.
3. Install the 2 nuts (item 44 in Figure 10 ) to attach the DPF to the DPF stay;
torque the nuts to 11 to 21 N·m (8 to 15 ft-lb) .
4. Install the 4 nuts (item 45 in Figure 10 ) to attach the DPF to the exhaust
manifold; torque the nuts to 11 to 21 N·m (8 to 15 ft-lb) .
5. Install the 2 bolts (item 43 in Figure 10 ) to attach the DPF stiffener to the DPF
stay; torque the bolts to 21 to 31 N·m (15 to 23 ft-lb) .
6. Connect all the electrical connectors to the DPF.
7. Assemble all the exhaust system components that were removed as follows:
A. If the exhaust temperature sensors (items 7 and 8 in Figure 10 ) were
removed, tighten the sensors to 25 to 40 N·m (19 to 29 ft-lb) .
B. If the sensor pipe assemblies (items 25 and 26 in Figure 10 ) were
removed, replace the sensor gaskets on both sides of the sensor pipe
assemblies. Tighten the pipe joint bolts to
45 to 55 N·m (33 to 40 ft-lb) .
C. If the DPF stiffeners (items 16, 17, 18, and 19 in Figure 10 ) were loosened
or removed, tighten the fasteners that secure the stiffeners to 21 to 31
N·m (15 to 23 ft-lb) before you tighten the fasteners that secure the
exhaust system to the DPF stays.
8. Install the exhaust tube as shown in Figure 11 .
9. Lower the hood and secure it with the latches.
Diesel Engine: Service and Repairs Page 3–12 Groundsmaster 7210
16222SL Rev C