Caterpillar cat 320 f l excavator (prefix ybm) service repair manual (ybm00001 and up)

Service Repair Manual
Models
320F L Excavator

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Product: EXCAVATOR
Model: 320F L EXCAVATOR YBM
Configuration: 320F L Excavator YBM00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
320F, 323F Excavators Machine Systems
Media Number -M0066628-06 Publication Date -01/09/2018 Date Updated -18/09/2018
i06221522
Load Control Valve (Boom Cylinder) - Remove and Install
SMCS - 5811-010-BCD
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 311-1362 Vacuum Gauge Gp 1
Start By:
a. Release the hydraulic system pressure.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
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2019/11/21https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sis...

Illustration 1 g02729614
1. Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach
an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This
procedure will pull vacuum on the hydraulic system.
2. Disconnect tube assemblies (1) and (2). Remove bolts (3) and remove load control valve
(4).
Installation Procedure
1. Install load control valve (boom cylinder) (3) in the reverse order of removal.
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All Rights Reserved.
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Thu Nov 21 22:58:07 UTC+0800 2019
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Product: EXCAVATOR
i06221523
Load Control Valve (Boom Cylinder) - Disassemble
SMCS - 5811-015-BCD
Disassembly Procedure
Start By:
a. Remove the load control valve (boom cylinder)
1. Remove relief valve (4). Remove plug (2) and washer (3).
2. Remove valve (1).
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
3. Remove plug (10), shims (9), guide (8), spring (7), valve (6), and valve (5).
4. Remove piston (11), pin (12), and guide (13).
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
5. Remove bolts (18), cover (17), guide assembly (16), spring (15), and valve (14).
6. Remove the O-ring and back up ring from guide assembly (16)
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7. Remove plug (21) and ball (19).
8. Remove nut (22) and seat (20) from plug (12).
Thu Nov 21 22:59:03 UTC+0800 2019
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Product: EXCAVATOR
i06221527
Load Control Valve (Boom Cylinder) - Assemble
SMCS - 5811-016-BCD
Assembly Procedure
1. Install ball (19), seat (20), plug (21), and nut (22) onto plug (12).
2. Tighten plug (21) to a torque of 48 ± 5 N·m (35 ± 40 lb ft).
3. Tighten seat (20) to a torque of 2.25 ± 0.25 N·m (20 ± 2 lb in). Tighten nut (22) to a torque
of 4.0 ± 0.5 N·m (35 ± 4 lb in).
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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.
4. Install the O-ring and back up ring onto guide assembly (16)
5. Install valve (14), spring (15), guide assembly (16), cover (17), and bolts (18).
6. Tighten bolts (18) to a torque of 100 ± 20 N·m (74 ± 15 lb ft).
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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.
7. Install relief valve (4). Install washer (3) and plug (2). Tighten relief valve (4) to a torque of
95 ± 14 N·m (70 ± 10 lb ft).
8. Install the O-ring seal onto guide (13). Install guide (13). Tighten guide (13) to a torque of
35 ± 3 N·m (26 ± 2 lb ft).
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9. Install pin (12) and piston (11).
10. Install valve (1).
11. Install valve (5), valve (6), spring (7), guide (8), shims (9), and plug (10).
12. Tighten valve (1) to a torque of 215 ± 25 N·m (159 ± 18 lb ft). Tighten plug (10) to a torque
of 300 ± 40 N·m (221 ± 30 lb ft).
End By:
a. Install the load control valve.
Thu Nov 21 22:59:59 UTC+0800 2019
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i06221540
Boom Cylinder - Remove and Install
SMCS - 5456-010
Removal Procedure
Table 1
Required Tools
A 4C-9485 Pin Driver Cap 1
Cylinders equipped with lock valves can remain pressurized for very
long periods of time, even with the hoses removed.
Failure to relieve pressure before removing a lock valve or
disassembling a cylinder can result in personal injury or death.
Ensure all pressure is relieved before removing a lock valve or
disassembling a cylinder.
1. Fully extend the bucket cylinder. Fully extend the stick cylinder. Lower the boom until the
stick assembly is in contact with the ground.
2. Release the pressure in the hydraulic system.
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3. Loosen nut (1). Turn bolt (2) counterclockwise in order to release the pressure in the cylinder.
4. Remove bolts (3).
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5. Remove clamps (4).
6. Remove bolts (6) and support assemblies (5).
7. Remove bolts (7) and reposition tube assembly (8) out of the way.
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8. Remove bolts (9) and reposition valve assembly (10) out of the way.
9. Attach a suitable lifting device to boom cylinder (11). The weight of boom cylinder (11) is
approximately 287 kg (632 lb).
10. Remove bolts (12) and plate (13). Remove spacer (14) (not shown).
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11. Attach Tooling (A) to pin (15). Use a suitable driver in order to reposition pin (15). Remove
shim (16).
12. Lower boom cylinder (11) onto suitable cribbing and attach a suitable lifting device to boom
cylinder (11), as shown. The weight of boom cylinder (11) is approximately 287 kg (632 lb).
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13. Remove bolt (18). Remove pin assembly (19) and shims (17). Remove boom cylinder (11).
Installation Procedure
Table 2
Required Tools
A 4C-9485 Pin Driver Cap 1
1. Attach a suitable lifting device to boom cylinder (11), as shown. The weight of boom cylinder
(11) is approximately 287 kg (632 lb). Position boom cylinder (11) onto the machine.
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2. Install shims (17) and pin assembly (19) on the head end of boom cylinder (11). Install bolt
(18).
3. Use the suitable lifting device in order to position boom cylinder (11) onto suitable cribbing.
Reposition the suitable lifting device near the rod end of boom cylinder (11). The weight of
boom cylinder (11) is approximately 287 kg (632 lb). Use the suitable lifting device to raise the
rod end of boom cylinder (11) into position.
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Caterpillar cat 320 f l excavator (prefix ybm) service repair manual (ybm00001 and up)

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Caterpillar cat 320 f l excavator (prefix ybm) service repair manual (ybm00001 and up)