Caterpillar Cat 320C Excavator (Prefix BBL) Service Repair Manual Instant Download

1
Service Repair Manual

• Model
• 320C, 320C L, 320C LN,
• 320C S Excavator

2
Shutdown SIS
Previous Screen
Product EXCAVATOR Model 320C EXCAVATOR
BBL Configuration 320C, 320C L, 320C LN, 320C S
Excavators BBL00001-UP (MACHINE) POWERED BY 3066
Engine
Disassembly and Assembly 320C Excavator Machine
Systems Media Number -RENR3826-16 Publication
Date -01/11/2014
Date Updated -30/03/2016
i01525672
Control Valve (Auxiliary) - Install - F1 and F4
Auxiliary Control Valves SMCS -
5051-012-AX Installation Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
(A) FT-2674 Vacuum Cap 1
(B) 138-7573 Link Bracket 1
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, "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.
1. Install two hose assemblies on the bottom of
the (F4) auxiliary control valve.
3

• Illustration 1 g00704077
• Fasten F1 and F4 auxiliary control valves
  together with the existing mount bolts. Fasten
  the control valves at the top with a washer and
  nut (28), as shown.
• Install the F1 and F4 auxiliary control valves.
• Lower the F1 and F4 auxiliary control valves in
  order to connect the hoses and electrical
  connections on the bottom of the auxiliary
  control valves.

Illustration 2 g00690963 5. Remove the cap to
the hydraulic tank. Attach Tooling (A) to the
hydraulic tank. Note Hook up the air to Tooling
(A) in order to create a vacuum in the hydraulic
system. This will minimize the leakage to the
hose assemblies.
4
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Illustration 3 g00703894 6. Connect two pilot
lines (30) to the bottom of each control valve.
Illustration 4 g00703965 7. Connect one
electrical connector (29) to each control valve.
Illustration 5 g00703950 8. Align the auxiliary
control valves with the main control valve.
Install the bottom two mount bolts (27).
6

1. Remove nut (28) and the washer from the top two
   mount bolts that pass through control valves (F1)
   and (F4).
2. Install the top two mount bolts.
3. Tighten the four mount bolts (27) to a torque of
   240 40 Nm (177 30 lb ft).
4. Connect one electrical connector (26) to each
   control valve.

Illustration 6
g00703893

1. Remove 7X-2547 Bolt (25).
2. Remove Tooling (B) and the hoist. Install the
   original bolt (25).

Illustration 7 g00703941 15. Install bolts (23)
in order to connect tube (24) to the (F1) control
valve.
7
Illustration 8 g00703888 16. Install bolts (21)
in order to connect tube (22) to the (F4) control
valve.

• Illustration 9 g00703729
• Install bolts (19) in order to connect tube (20)
  to the (F4) control valve.
• Connect hose assembly (18) to the (F4) control
  valve.

8

• Illustration 10 g00703717
• Connect hose assembly (17) to the (F1) control
  valve.
• Connect two hose assemblies (16) to both control
  valves.

Illustration 11 g00703706 21. Connect three hose
assemblies (15) to the (F1) control valve.
Illustration 12
g00703705

1. Install panels (14) and support (12).
2. Install the washers and bolts (13) that hold the
   panels and support together.

9
Illustration 13
g00703703

1. Install air filter (10).
2. Install the washers and bolts (9) in order to
   hold the air filter and the support to the
   machine.

Illustration 14
g00703690
Illustration 15 g00703702 26. Install hose (6)
and install two hose clamps (7).
10
Illustration 16 g00703704 27. Connect two
electrical connectors (11) to the air filter.
Install a new tie strap.
Illustration 17
g00792422
28. Close side door (8).
Illustration 18 (F1) Auxiliary control valve (F4)
Auxiliary control valve
g00703510
29. Install five pilot lines (5).
11

• Remove Tooling (A).
• Install high efficiency filters in place of the
  pilot filter, case drain filter, and the return
  filter.
• Note High efficiency filters should not be run
  for more than 250 hours before you change back to
  the standard filters.
• Fill the hydraulic oil tank and the swing drive
  with clean hydraulic oil to the correct level.
• Reference Refer to Operation and Maintenance
  Manual, "Lubricant Viscosities" for the proper
  oil viscosity.
• Reference Refer to Operation and Maintenance
  Manual, "Hydraulic System Oil Level - Check" for
  the correct filling procedures.
• Install the cap to the hydraulic tank.
• Start the engine, and check the operation of the
  auxiliary attachments. Also, check for leaks.
  Stop the engine.
• Obtain a hydraulic oil sample from the main SOS
  port.
• Reference Refer to Operation and Maintenance
  Manual, "Sampling Interval and Location of
  Sampling Valve" for the correct location.
• If the SOS sample exceeds ISO 18/15, flush the
  hydraulic system.
• Reference Refer to Contamination Control
  Guidelines, SEBF8436, "Hydraulic System Flushing
  Procedure for 322C Hydraulic Excavators" for
  further information.

• Illustration 19 g00703691
• Install four bolts (4) and the washers in order
  to hold cover (3).
• Install four bolts (2) and the washers in order
  to hold cover (1).

Copyright 1993 - 2019 Caterpillar Inc. All Rights
Reserved. Private Network For SIS Licensees.
Thu Oct 10 220801 UTC0800 2019
12
Shutdown SIS
Previous Screen
Product EXCAVATOR Model 320C EXCAVATOR
BBL Configuration 320C, 320C L, 320C LN, 320C S
Excavators BBL00001-UP (MACHINE) POWERED BY 3066
Engine
Disassembly and Assembly 320C Excavator Machine
Systems Media Number -RENR3826-16 Publication
Date -01/11/2014
Date Updated -30/03/2016
i01974016
Control Valve (Auxiliary) - Assemble - F2
Auxiliary Control Valve SMCS - 5051-016-AX Assembl
y Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 1U-6396 O-Ring Assembly Compound
B 155-0695 Thread Lock Compound
Note Cleanliness is an important factor. Before
assembly, all parts should be thoroughly cleaned
in cleaning fluid. Allow the parts to air dry.
Wiping cloths or rags should not be used to dry
parts. Lint may be deposited on the parts which
may cause later trouble. Inspect all parts. If
any parts are worn or damaged, use new parts for
replacement. All disassembly and all assembly
procedures must be performed on a clean work
surface and in a clean hydraulic area. Keep
cleaned parts covered and protected at all
times. Note O-ring seals, gaskets, and seals
should always be replaced. A used O-ring seal may
not have the same sealing properties as a new
O-ring. Use Tooling (A) during the assembly
procedure. Note Apply a light film of hydraulic
oil to all components before assembly. Spool,
Load Hold Check Valve, and Line Relief Valves
13
Illustration 1
g00713437
Improper assembly of parts that are spring loaded
can cause bodily injury. To prevent possible
injury, follow the established assembly procedure
and wear protective equipment.
1. Install spring (57). Apply Tooling (B) to bolt
(56). Install bolt (56). Tighten bolt (56) to 50
10 - 0 Nm (37 7 - 0 lb ft).
Illustration 2 g00713427 2. Install O-ring seals
and backup rings in the line relief valves (42)
and (44). Install O-ring seals (49), (50), (52),
(53), and (54). Install backup rings (51) and
(55).
14
Illustration 3
g00713419
Improper assembly of parts that are spring loaded
can cause bodily injury. To prevent possible
injury, follow the established assembly procedure
and wear protective equipment.
3. Assemble the load hold check valve. Install
O-ring seal (47), spring (46), and check
valve (45) in plug (48).
Illustration 4 g00713411 4. Install O-ring seals
(37), (38), (39), and (40) in the valve housing.
Install spool (41). Install line relief valves
(42) and (44). Tighten line relief valves (42)
and (44) to 95 14 Nm (70 10 lb ft). Install
load hold check valve (43). Tighten load hold
check valve (43) to 200 25 Nm (148 18 lb
ft). Solenoid Valve and Housing
15
Illustration 5 g00713324 1. Install O-ring seal
(33) on plug (30). Install O-ring seal (34) on
fitting (29). Install O-ring seal (35) on plug
(31). Install O-ring seal (36) on fitting (32).
Illustration 6 g00713323 2. Install fittings
(29) and (32). Install plugs (30) and (31).
Illustration 7 g00713322 3. Install O-ring seal
(24), (25), (26), and (27) on solenoid valve
(22). Install O-ring seal (28) on fitting (23).
16
Illustration 8 g00713321 4. Install fitting
(23). Install solenoid valve (22) in the housing.
Install two bolts (21).
Illustration 9 g00713320 5. Install O-ring seal
(20) in the valve housing.
Illustration 10
g00713319
6. Install valve (19). Install two bolts (18).
17
Illustration 11 g00713318 7. Install O-ring seal
(15) on fitting (12). Install O-ring seal (16) on
fitting (14). Install O-ring seal (17) on plug
(13).
Illustration 12 g00713317 8. Install fitting
(12), plug (13), and fitting (14).
Illustration 13 g00713316 9. Install O-ring seal
(7) on fitting (6). Install O-ring seal (8), (9),
(10), and (11) on solenoid valve (5).
18
Illustration 14 g00713315 10. Install fitting
(6). Install solenoid valve (5) in the housing.
Install two bolts (4).
Illustration 15 g00713314 11. Install O-ring
seal (3) in the valve housing.
Illustration 16
g00713277
12. Install valve (1). Install two bolts (2). End
By
19
a. Install the F2 auxiliary control valve. Refer
to Disassembly and Assembly, "Control Valve
(Auxiliary) - Install" for the machine that is
being serviced.
Copyright 1993 - 2019 Caterpillar Inc. All Rights
Reserved. Private Network For SIS Licensees.
Thu Oct 10 220700 UTC0800 2019
20
Shutdown SIS
Previous Screen
Product EXCAVATOR Model 320C EXCAVATOR
BBL Configuration 320C, 320C L, 320C LN, 320C S
Excavators BBL00001-UP (MACHINE) POWERED BY 3066
Engine
Disassembly and Assembly 320C Excavator Machine
Systems Media Number -RENR3826-16 Publication
Date -01/11/2014
Date Updated -30/03/2016
i01974012
Control Valve (Auxiliary) - Assemble - F4
Auxiliary Control Valve SMCS - 5051-016-AX Assembl
y Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 1U-6396 O-Ring Assembly Compound
B 155-0695 Thread Lock Compound
Note Cleanliness is an important factor. Before
assembly, all parts should be thoroughly cleaned
in cleaning fluid. Allow the parts to air dry.
Wiping cloths or rags should not be used to dry
parts. Lint may be deposited on the parts which
may cause later trouble. Inspect all parts. If
any parts are worn or damaged, use new parts for
replacement. All disassembly and all assembly
procedures must be performed on a clean work
surface and in a clean hydraulic area. Keep
cleaned parts covered and protected at all
times. Note O-ring seals, gaskets, and seals
should always be replaced. A used O-ring seal may
not have the same sealing properties as a new
O-ring. Use Tooling (A) during the assembly
procedure. Note Apply a light film of hydraulic
oil to all components before assembly. Spool and
Load Hold Check Valve
21
Illustration 1 g00705302 1. Install spring (73).
Apply Tooling (B) to bolt (72). Install bolt
(72). Tighten bolt (72) to 50 10 - 0 Nm (37
7 - 0 lb ft).
Illustration 2 g00705294 2. Install O-ring seal
(70) and (71) on fitting (63).
Illustration 3
g00705452
22
Improper assembly of parts that are spring loaded
can cause bodily injury. To prevent possible
injury, follow the established assembly procedure
and wear protective equipment.
3. Assemble the load hold check valve. Install
O-ring seal (68), spring (67), and check
valve (66) in plug (69).
Illustration 4 g00705280 4. Install O-ring seal
(64) and (65) on fitting (61).
Illustration 5 g00705262 5. Install O-ring seals
(56), (57), (58), and (59) in the valve housing.
Install spool (60). Install fittings (61) and
(63). Tighten fittings (61) and (63) to 95 14
Nm (70 10 lb ft). Install load hold check
valve (62). Tighten load hold check valve (62) to
200 25 Nm (148 18 lb ft). Solenoid Valve and
Housing
23
Illustration 6 g00705245 1. Install O-ring seal
(52) on plug (49). Install O-ring seal (53) on
fitting (48). Install O-ring seal (54) on plug
(50). Install O-ring seal (55) on fitting (51).
Illustration 7 g00705243 2. Install fittings
(48) and (51). Install plugs (49) and (50).
Illustration 8 g00705234 3. Install O-ring seal
(43), (44), (45), and (46) on solenoid valve
(41). Install O-ring seal (47) on fitting (42).
24
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Illustration 9 g00705226 4. Install fitting
(42). Install solenoid valve (41) in the housing.
Install two bolts (40).
Illustration 10 g00705223 5. Install O-ring seal
(39) in the valve housing.
Illustration 11
g00705216
6. Install valve (38). Install two bolts (37).
26
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friend! Thank you very much for reading. Enter
the link into your browser. The full manual is
available for immediate download. https//www.ebo
oklibonline.com