Caterpillar Cat 308E2CR Mini Hydraulic Excavator (Prefix MY2) Service Repair Manual (MY200001 and up).pdf

Service Repair Manual
Models
308E2CR Mini Hydraulic Excavator

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Product: MINI HYD EXCAVATOR
Model: 308E2 CR MINI HYD EXCAVATOR MY2
Configuration: 308E 2CR Mini Hydraulic Excavator MY200001-UP (MACHINE)
Disassembly and Assembly
C3.3B Tier 4 Final and EU Stage 3B Engines for Caterpillar Built Machines
Media Number -UENR3278-07 Publication Date -01/09/2014 Date Updated -11/07/2016
i05305930
Exhaust Gas Recirculation Valve - Remove and Install
SMCS - 108N-010
Removal Procedure
Personal injury can result from hot coolant, steam and alkali.
At operating temperature, engine coolant is hot and under pressure. The
radiator and all lines to heaters or the engine contain hot coolant or
steam. Any contact can cause severe burns.
Remove cooling system pressure cap slowly to relieve pressure only
when engine is stopped and cooling system pressure cap is cool enough
to touch with your bare hand.
Do not attempt to tighten hose connections when the coolant is hot, the
hose can come off causing burns.
Cooling System Coolant Additive contains alkali. Avoid contact with
skin and eyes.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
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308E 2CR Mini Hydraulic Excavator MY200001-UP (MACHINE)(SEBP7191 - 13) - ...
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...

Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat products.
Dispose of all fluids according to local regulations and mandates.
Note: Refer to Specifications, "Engine Design" for non-specified engine torque values.
Illustration 1 g02824663
1. Drain coolant below exhaust gas recirculation valve level. Remove heat shield (1).
2. Disconnect hoses (2) and (3). Remove bolts (4).
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3. Disconnect harness assembly (9), hose (6) and (10). Remove bolts (11) and bolts (7).
Remove exhaust gas recirculation valve (5) and cooler assembly (8).
4. Remove screws (13) and reed valve (12) from exhaust gas recirculation valve (5).
Installation Procedure
1. Install exhaust gas recirculation valve (5) in the reverse order of removal.
a. Tighten bolts (4) and (11) to a torque of 24 to 27 N·m (212 to 239 lb in).
b. Tighten screws (13) to a torque of 10 to 11 N·m (89 to 97 lb in).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Jan 8 22:51:25 UTC+0800 2020
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i05308795
Fumes Disposal Filter - Remove and Install
SMCS - 1074-010; 1317-010
Removal Procedure
1. Remove hose assemblies (1), (2) and (6).
2. Remove bolts (3), bracket (5) and fumes disposal group (4).
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3. Remove cap (10) from housing (7).
4. Remove filter (8) and remove O-ring seal (9).
1. Install fumes disposal group (4) in reverse order of removal.
a. Tighten cap (10) to a torque of 9.5 to 10.5 N·m (84 to 93 lb in)
Wed Jan 8 22:52:22 UTC+0800 2020
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i05305950
Exhaust Manifold - Remove and Install
SMCS - 1059-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Anti-Seize Compound 1
Start By:
a. Remove the turbocharger.
1. Remove locknuts (4) and bolts (3).
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2. Remove exhaust manifold (1) and the gasket.
3. If necessary, remove studs (2) and (5).
1. Install exhaust manifold (1) in the reverse order of removal.
a. If necessary, apply Tooling (A) on the threads of studs (5) and (2).
b. Apply Tooling (A) on the threads of locknuts (4) and the threads of bolts (3).
c. Tighten locknuts (4) to a torque of 32 ± 2 N·m (24 ± 2lb ft).
Wed Jan 8 22:53:19 UTC+0800 2020
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i05305970
Diesel Particulate Filter - Disassemble
SMCS - 108F-015
Disassembly Procedure
Wear goggles, gloves, protective clothing, and a National Institute for
Occupational Safety and Health (NIOSH) approved P95 or N95 half-
face respirator when handling a used Diesel Particulate Filter or
Catalytic Converter Muffler. Failure to do so could result in personal
injury.
NOTICE
Do not strike any part of the assembly of the Diesel Particulate Filter
(DPF). Do not allow any object to contact the internal element of the
DPF. If the internal element of the DPF becomes damaged, the
assembly must be replaced.
1. Mark the position of components for installation purposes.
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2. Remove temperature sensor (1) from body assembly (8). Remove tube assemblies (4) and
pressure sensor (5).
3. Remove bolts (6). Remove body assembly (8) and gasket (12).
4. Remove bolts (7) to separate DPF filter assembly (9) from collar (10). Remove DPF filter
assembly (9).
5. Remove temperature sensor (2) from collar (10). Remove collar (10) and gasket (12).
6. Remove temperature sensor (3) from catalyst assembly (11). Remove catalyst assembly (11)
and gasket (12).
7. Clean the Diesel Particulate Filter (DPF). Refer to Special Instruction, REHS7788,
"Cleaning the Diesel Particulate Filter (DPF) on C3.3B and C3.8 Engines".
Wed Jan 8 22:54:16 UTC+0800 2020
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i05305971
Diesel Particulate Filter - Assemble
SMCS - 108F-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A -
Locktite
Nickel Anti Seize 1
injury.
NOTICE
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Note: After cleaning filter assembly or installing a new filter assembly, the Ash Service must be
performed. Refer to Troubleshooting, UENR3423, "Cat ET Service Features - DPF Soot Load
Reset".
Note: When installing a new DOC or DPF, Caterpillar recommends documenting the new
component serial numbers on-line. Go to SIS Web and select "View More" under Additional
Service Information. Select the "C3.3B and C3.8 Downloads" link. The new DOC or DPF serial
numbers can be entered through the "C3.3B and C3.8 DPF / DOC Service Info Registration".
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1. Apply Tooling (A) onto the threads of temperature sensor (3). Install gasket (12) and
temperature sensor (3) onto catalyst assembly (11). Tighten temperature sensor (3) to a
torque of 30 ± 5 N·m (22 ± 3 lb ft).
2. Apply Tooling (A) onto the threads of temperature sensor (2). Install collar (10), gasket
(12), and temperature sensor (2) onto catalyst assembly (11). Tighten temperature sensor (2)
to a torque of 30 ± 5 N·m (22 ± 3 lb ft)
3. Install DPF filter assembly (9) in the correct orientation for the exhaust flow as indicated by
the arrow. Install bolts (7). Install gasket (12). Tighten bolts (7) to a torque of 49 to 64 N·m
(36 to 47 lb ft).
4. Install body assembly (8). Install bolts (6). Tighten bolts (6) to a torque of 49 to 64 N·m
(36 to 47 lb ft).
5. Apply Tooling (A) onto the threads of tube assemblies (4) and temperature sensor (1).
Install temperature sensor (1) onto body assembly (8). Install tube assemblies (4) and
pressure sensor (5). Tighten temperature sensor (1) to a torque of 30 ± 5 N·m (22 ± 3 lb ft).
Tighten tube assemblies (4) to a torque of 19 ± 3 N·m (168 ± 27 lb in).
Wed Jan 8 22:55:13 UTC+0800 2020
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i05218929
Diesel Particulate Filter - Remove and Install
SMCS - 108F-010
Removal Procedure
injury.
The muffler, catalytic converter/muffler, and diesel particulate filter will
become extremely hot during engine operation. A hot muffler, catalytic
converter/muffler and diesel particulate filter can cause serious burns.
Allow adequate cooling time before working on or near the muffler,
catalytic converter/muffler and diesel particulate filter.
NOTICE
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1. Disconnect harness assemblies (1).
2. Remove bolts (2) and bolts (3). Disconnect harness assembly (4) from pressure sensor.
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3. Remove bolts (5) from DPF mount bracket.
4. Use two people to remove diesel particulate filter (6).
5. Remove temperature sensors (7). Remove pressure sensor (8) and tube assemblies (9).
1. Install diesel particulate filter (6) in the reverse order of removal.
a. Tighten bolts (5) to a torque of 52 ± 3 N·m (38 ± 2 lb ft).
b. Tighten sensors (7) to a torque of 30 ± 4 N·m (22 ± 3 lb ft).
c. Tighten tube assemblies (9) to a torque of 19 ± 3 N·m (168 ± 27 lb in).
Wed Jan 8 22:56:09 UTC+0800 2020
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i05227613
Inlet Manifold - Remove and Install
SMCS - 1058-010
Removal Procedure
Start By:
a. Remove fuel manifold.
b. Remove exhaust gas recirculation valve.
Note: Refer to Specification UENR3421 "Engine Design" for non-specified engine Torque
Values.
1. Disconnect hose assembly (1) and relocate.
2. Remove bolt (2) and remove tube assembly (3).
3. Remove bolts (4) to remove inlet manifold (5) and the gasket.
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1. Install inlet manifold (5) in the reverse order of removal.
Wed Jan 8 22:57:06 UTC+0800 2020
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Caterpillar Cat 308E2CR Mini Hydraulic Excavator (Prefix MY2) Service Repair Manual (MY200001 and up).pdf

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