Caterpillar Cat 321C LCR EXCAVATOR (Prefix MCF) Service Repair Manual Instant Download.pdf

Service Repair Manual
Model
321C LCR EXCAVATOR

Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 321C EXCAVATOR MCF
Configuration: 321C LCR Hydraulic Excavator MCF00001-UP (MACHINE) POWERED BY 3066 Engine
Disassembly and Assembly
321C CR Excavator Engine Supplement
Media Number -RENR7107-06 Publication Date -01/06/2013 Date Updated -28/06/2013
i01923461
Alternator - Remove and Install
SMCS - 1405-010
S/N - MCF1-UP
Removal Procedure
Start By:
A. Deactivate the electrical system. Refer to Operation and Maintenance Manual, "Battery
Disconnect Switch" in order to deactivate the electrical system.
Illustration 1 g01000928
Rear view of the alternator
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321C LCR Hydraulic Excavator MCF00001-UP (MACHINE) POWERED BY 3066 E...
2019/10/4
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1. Remove the nut and the washer behind rubber boot (3). Disconnect the wire behind the
rubber boot.
2. Disconnect electrical connections (2) and (4) from alternator (1) .
3. Remove bolt (5) in order to disconnect the ground wires from alternator (1) .
4. Remove bolt (6) and reposition the harness assembly away from alternator (1) .
5. Adjust bolt (9) in order to release the tension on bolt (7). Remove bolt (7). Reposition the
alternator and remove belt (8) .
2/6
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6. Remove bolt (10) from the alternator.
7. Support alternator (1). Remove bolt (11) from alternator (1) .
8. Remove alternator (1) from the machine.
Installation Procedure
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1. Position alternator (1) and install bolt (9) .
2. Install bolt (10) to the alternator.
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3. Install belt (8) .
4. Reposition the alternator in order to put a slight tension on belt (8). Install bolt (7). Adjust
bolt (9) in order to adjust the tension on belt (8). Refer to Operation and Maintenance
Manual, "Belts - Inspect/Adjust/Replace".
Rear view of the alternator
5. Position the harness assembly and install bolt (6) to alternator (1) .
5/6
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6. Connect the ground wires and install bolt (5) .
7. Connect electrical connections (2) and (4) to alternator (1) .
8. Connect the wire that is behind rubber boot (3). Install the washer and the nut that is located
behind rubber boot (3). Position rubber boot (3) on the alternator.
End By: Activate the electrical system. Refer to Operation and Maintenance Manual, "Battery
Disconnect Switch" in order to activate the electrical system.
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Oct 4 22:18:22 UTC+0800 2019
6/6
2019/10/4

Shutdown SIS
Previous Screen
Product: EXCAVATOR
i02211865
Electric Starting Motor - Remove and Install
SMCS - 1453-010
S/N - MCF1-UP
Removal Procedure
Start By:
A. Remove the counterweights. Refer to Disassembly and Assembly, "Counterweight -
Remove and Install".
B. Remove the hood. Refer to Disassembly and Assembly, "Hood - Remove and Install".
1. Turn the battery disconnect switch to the OFF position.
Note: Put identification marks on all wires and harness assemblies for installation purposes.
1/5
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2. Remove rubber boot (2). Slide rubber boot (2) down battery cable (1) in order to access the
nut under the rubber boot.
3. Remove nut (3). Disconnect battery cable (1) .
4. Remove bolt (4) and cover (5) .
2/5
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5. Remove bolt (6). Disconnect grounding strap (7) .
6. Remove nuts (9). Remove electric starting motor (8) .
3/5
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1. Position electric starting motor (8) and install nuts (9) .
2. Connect grounding strap (7). Install bolt (6). Tighten bolt (6) to a torque of 3.5 ± 1.0 N·m
(31 ± 9 lb in).
3. Position cover (5) and install bolt (4) .
4/5
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4. Connect battery cable (1). Install nut (3). Tighten nut (3) to a torque of 11 ± 1 N·m (97 ± 9
lb in).
5. Install rubber boot (2) over the nut that connects battery cable (1) .
6. Turn the battery disconnect switch to the ON position.
End By:
a. Install the hood. Refer to Disassembly and Assembly, "Hood - Remove and Install".
b. Install the counterweights. Refer to Disassembly and Assembly, "Counterweight - Remove
and Install".
Fri Oct 4 22:19:18 UTC+0800 2019
5/5
2019/10/4

Shutdown SIS
Previous Screen
Product: EXCAVATOR
i01906909
Governor Control Motor - Remove and Install
SMCS - 1716-011; 1716-012
S/N - MCF1-UP
Removal Procedure
1. Remove two bolts (3) and the washers from the hinge.
2. Remove three bolts (1) and the washers in order to remove access panel (2) .
1/7
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3. Remove three bolts (5) and the washers in order to remove access panel (4) .
4. Open the engine hood.
5. Remove two nuts (6) that secure governor linkage (7) to the fuel injection pump.
2/7
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6. Loose nut (8) and (9) that secures governor linkage (7) to the engine.
7. Remove two bolts (10) and the washers in order to remove two clamps (11) that secure the
governor linkage to the chassis.
Note: Some models may only have one clamp (11) .
3/7
2019/10/4

8. Disconnect electrical connector (13) .
9. Remove two bolts (14) and the two washers. Remove governor control motor (12) .
1. Position governor control motor (12) on the mounting bracket. Install the two washers and
two bolts (14) .
2. Connect electrical connector (13) .
4/7
2019/10/4

3. Install two clamps (11) that secure the governor linkage to the chassis.
Note: Some models may only have one clamp (11) .
4. Install two bolts (10) and the washers that hold clamps (11) in position.
5. Install governor linkage (7). Fasten governor linkage (7) with nut (8) and nut (9) .
5/7
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6. Install governor linkage (7) to the fuel injection pump. Fasten governor linkage (7) with
washers and two nuts (6) .
7. Install access panel (4). Install the washers and three bolts (5) .
6/7
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8. Install access panel (2). Install the washers and three bolts (1) .
9. Install the washers and two bolts (3) to the hinge.
10. Close the engine hood.
11. Check the governor actuator.
Reference: Refer to Systems Operation/Testing and Adjusting, "Governor Actuator -
Calibrate" for further information.
Fri Oct 4 22:20:14 UTC+0800 2019
7/7
2019/10/4

Shutdown SIS
Previous Screen
Product: EXCAVATOR
i01923462
Fuel Priming Pump - Remove and Install
SMCS - 1258-010
S/N - MCF1-UP
Removal Procedure
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.
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
1/3
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1. Open the hood.
2. Remove bolts (2) .
3. Remove fuel priming pump (1) .
Note: Fuel will drain from the fuel priming pump during the removal. Collect the fuel in a
suitable container for storage or disposal.
4. Remove the gasket.
NOTICE
containing fluids.
2/3
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Note: O-rings, gaskets, and seals should always be replaced.
1. Clean the surfaces that make contact with the gasket. Install a new gasket.
2. Position fuel priming pump (1) .
3. Install bolts (2) .
4. Close the hood.
Fri Oct 4 22:21:09 UTC+0800 2019
3/3
2019/10/4

Shutdown SIS
Previous Screen
Product: EXCAVATOR
i01934132
Fuel Filter (Primary) and Fuel Filter Base - Remove and
Install
SMCS - 1261-010; 1262-010
S/N - MCF1-UP
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
(A) 185-3630 Strap Wrench Assembly 1
NOTICE
containing fluids.
1/4
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1. Open hood (1) .
2. Use Tooling (A) to remove fuel filter (6) (not shown) from fuel filter base (5) .
3. Remove two banjo bolts (3) and the gaskets (not shown) in order to disconnect fuel lines (4)
from fuel filter base (5) .
Note: Cap all openings or plug all openings immediately in order to prevent contamination
of the fuel system.
4. Remove two bolts (2) .
5. Remove fuel filter base (5) .
NOTICE
2/4
2019/10/4

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containing fluids.
1. Position fuel filter base (5) and install bolts (2) .
2. Install banjo bolts (3) and the gaskets (not shown) in order to connect fuel lines (4) to fuel
filter base (5) .
3. Install fuel filter (6) (not shown) on the fuel filter base (5). The fuel filter is hand tightened
only.
3/4
2019/10/4

Caterpillar Cat 321C LCR EXCAVATOR (Prefix MCF) Service Repair Manual Instant Download.pdf

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Caterpillar Cat 321C LCR EXCAVATOR (Prefix MCF) Service Repair Manual Instant Download.pdf