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320D2 GC Excavator TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar


320D2 GC Excavator TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

320D2 GC NBH
Excavator
320D2 (S/N: PFE1-UP; NBH1-UP; ZBH1-UP; YBJ1-UP)

Introduction

Inspections are the most basic form of condition monitoring. Inspections are easy to do and surprisingly effective at helping you spot equipment health issues. Proactive monitoring and analysis of equipment information will allow Dealers to intervene effectively before problems occur.

Note: Before adjusting product settings to comply with listed baseline TA2 values, consult SIS for the latest specification values.

Note: Specification values are based on the following machine settings unless stated otherwise

  • Engine Speed Dial "10"

  • AEC OFF

Creating an Electronic Copy

Use the following procedure to create an editable electronic copy from SIS Web.

  1. Click format to print.

  2. Save the document as an HTML format.

  3. Open the document with Microsoft Word.

Electrical System

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Table 1
Status(1)  Description  Specification  Actual  Comments 
  Inspect Battery Cables  Cables between the battery, the starter, and the engine ground must be the correct size. Wires and cables must be free of corrosion. Wires and cables must have cable support clamps to prevent stress on battery connections (terminals).     
  Battery Test(2)  12.4 VDC or more     
  Charging System Test(3)  18 VDC to 32 VDC     
  Electric Starting System Test(4)  12 to 16 V at −23° C (−10° F) to −7° C (19° F)     
14 to 18 V at −7° C (19° F) to 10° C (50° F)
16 to 24 V at 10° C (50° F) to 27° C (80° F)
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(1) N = Normal, M = Monitor, A = Action
(2) Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
(3) Refer to Special Instruction, REHS0354, "Charging System Troubleshooting".
(4) Refer to Testing and Adjusting, RENR2415, "Electric Starting System - Test".

Engine

Cooling System

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Table 2
Status(1)  Description  Specification  Actual  Comments 
  Radiator Pressure Relief (Radiator Cap)(2)      Refer to System Operation Testing and Adjusting. 
  Freezing Point of Engine Coolant      Refer to Operation and Maintenance Manual. 
  Conditioner Test of Engine Coolant      Refer to Operation and Maintenance Manual. 
  Difference between the Upper and Lower Radiator Tank Temperatures       
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(1) N = Normal, M = Monitor, A = Action
(2) Test for the pressure that is listed on the cap.

Fuel System

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Table 3
Status(1)  Description  Specification  Actual  Comments 
  Maximum Fuel Pressure of the High Pressure Fuel System  190 MPa (27557 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Lubrication System

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Table 4
Status(1)  Description  Specification  Actual  Comments 
  Minimum Engine Oil Pressure at Maximum Engine Speed  280 kPa (40 psi)     
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(1) N = Normal, M = Monitor, A = Action

Basic Engine

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Table 5
"Engine Performance - Test (Engine Speed)" 
Status(1)  Description  Specifications  Actual  Comments 
New Service Limit 
  No load high idle(2)  1970 ± 50 rpm(3)  1770 to 2020 rpm(3)     
  1870 ± 50 rpm(4) 1670 to 1920 rpm(4)     
  No load speed(5)  1050 ± 50 rpm  950 to 1150 rpm     
  No load low idle  1100 ± 50 rpm  1000 to 1200 rpm     
  Maximum speed with load(6)  1820 ± 50 rpm  1720 rpm     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) AEC switch in the OFF position
(3) Engine rpm within 5 seconds after the engine speed dial was placed at position "10"
(4) Five seconds after the engine speed dial was placed at position "10"
(5) AEC switch in the ON position
(6) Pressure is relieved from both pumps (stall condition).

Air Inlet and Exhaust System

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Table 6
Status(1)  Description  Specification  Actual  Comments 
Inlet Manifold Pressure - Test 
  Cylinder # 1 Exhaust Temperature(2)       
  Cylinder # 2 Exhaust Temperature(2)       
  Cylinder # 3 Exhaust Temperature(2)       
  Cylinder # 4 Exhaust Temperature(2)       
  Cylinder # 5 Exhaust Temperature(2)       
  Cylinder # 6 Exhaust Temperature(2)       
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(1) N = Normal, M = Monitor, A = Action
(2) Compare the exhaust temperature variance at each exhaust port.

Performance Checks

Reference: Refer to Testing & Adjusting, UENR6215, "Performance Tests" for more detail on the following test.

Operational Checks

Travel on Level Ground - Test

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Table 7
"Travel on Level Ground - Test" 
Status(1)  Travel Speed  New  Rebuild  Service Limit  Actual  Comments 
Travel Time (time in seconds) 
  HIGH  Forward  13.8 or less  14.8 or less  15.8 or less     
  Reverse  
  LOW  Forward  21.9 or less  23.4 or less  24.9 or less     
  Reverse  
Travel Deviation(2) 
  HIGH  Forward  800 mm (31.5 inch) or less  1200 mm (47.2 inch) or less  1500 mm (59.1 inch) or less     
  Reverse  
  LOW  Forward 
  Reverse  
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(1) N = Normal, M = Monitor, A = Action
(2) Travel deviation (distance) from the reference line

Travel on Level Ground - Test (Optional Test)

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Table 8
"Travel on Level Ground - Test (Optional Test)" 
Time For Three Revolutions (time in seconds) 
Status(1)  Undercarriage  Travel Speed  New  Rebuild  Service Limit  Actual  Comments 
  Standard  HIGH  Forward  16.5 or less  17.5 or less  18.5 or less       
  Reverse  
  LOW Forward  28.0 or less  29.0 or less  31.0 or less       
  Reverse  
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Machine Drift on a Slope - Check

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Table 9
"Machine Drift on a Slope - Check" 
Status(1)  Description  Specification  Actual  Comments 
New Rebuild Service Limit 
  Machine Drift  0 mm  0 mm  0 mm     
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(1) N = Normal, M = Monitor, A = Action

Swing Speed and Overswing on Level Ground - Check

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Table 10
"Swing Speed and Overswing on Level Ground - Check" 
Status(1)  Description  New  Rebuild  Service Limit  Actual  Comments 
Overswing 
  Right Swing  1100 mm (43.3 inch) or less  1200 mm (47.2 inch) or less  1400 mm (55.1 inch) or less     
  Left Swing 
Swing Time(2) (seconds) 
  Right Swing  5.1 or less  5.5 or less  6.1 or less     
  Left Swing 
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(1) N = Normal, M = Monitor, A = Action
(2) The time that is required to complete a 180 degree swing operation

Swing Speed and Swing Drift on a Slope - Check

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Table 11
"Swing Speed and Swing Drift on a Slope" 
Status(1)  Description  New  Rebuild  Service Limit  Actual  Comments 
Swing Time (seconds)(2) 
  Right Swing  4.1 or less  4.6 or less  5.4 or less     
  Left Swing 
Swing Drift mm (inch)(3) 
  Right Swing  0  0  0     
  Left Swing 
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(1) N = Normal, M = Monitor, A = Action
(2) With Empty Bucket
(3) With Loaded Bucket

Cylinder Drift - Check (Loaded Bucket)

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Table 12
"Cylinder Drift (Loaded Bucket)" 
Status(1)  Description  New  Rebuild  Service Limit  Actual  Comments 
  Boom Cylinder  6.0 mm (0.24 inch) or less  12.0 mm (0.47 inch) or less  24.0 mm (0.94 inch) or less     
  Stick Cylinder  12.0 mm (0.47 inch) or less  18.0 mm (0.71 inch) or less  30.0 mm (1.18 inch) or less     
  Bucket Cylinder  18.0 mm (0.71 inch) or less  27.0 mm (1.06 inch) or less  45.0 mm (1.77 inch) or less     
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(1) N = Normal, M = Monitor, A = Action

Cylinder Drift - Check (Empty Bucket)

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Table 13
"Cylinder Drift (Empty Bucket)" 
Status(1)  Description  Cylinder Position  Drift Direction  New  Rebuild  Service Limit  Actual  Comments 
  Boom Cylinder  Extend  Boom Down  6.0 mm (0.24 inch) or less  12.0 mm (0.47 inch) or less  24.0 mm (0.94 inch) or less     
  Stick Cylinder  Extend  Stick In  10.0 mm (0.39 inch) or less  15.0 mm (0.59 inch) or less  25.0 mm (0.98 inch) or less     
  Retract Stick Out  25.0 mm (0.98 inch) or less  30.0 mm (1.18 inch) or less  40.0 mm (1.57 inch) or less     
  Bucket Cylinder  Extend  Bucket Open  10.0 mm (0.39 inch) or less  15.0 mm (0.59 inch) or less  25.0 mm (0.98 inch) or less     
  Retract Bucket Closed  20.0 mm (0.79 inch) or less  25.0 mm (0.98 inch) or less  35.0 mm (1.38 inch) or less     
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(1) N = Normal, M = Monitor, A = Action

Cylinder Speed - Check

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Table 14
"Cylinder Operating Speed (seconds)" 
Status(1)  Description  Cylinder Position  New  Rebuild(2)  Service Limit (2)  Actual  Comments 
  Boom  Extension  3.6 ± 0.5  4.0  4.4     
  Retraction 2.2 ± 0.5 2.5  2.7     
  Stick  Extension  3.5 ± 0.5  4.0  4.5     
  Retraction 2.7 ± 0.5 3.0  3.4     
  Bucket(3)  Extension  3.6 ± 0.5  4.2  4.7     
  Retraction 2.2 ± 0.5 2.6  2.8     
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(1) N = Normal, M = Monitor, A = Action
(2) Maximum
(3) B1 - Family

Pilot System

Reference: Refer to Testing & Adjusting, UENR6215 for more detail on the following tests.

Relief Valve (Pilot) - Test and Adjust

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Table 15
"Relief Valve (Pilot) - Test and Adjust" 
  Machine Settings  Engine Speed 
Speed Dial "10"
AEC switch OFF
Status(1)  Description  Specification  Actual  Comments 
  Pilot relief valve pressure  4100 ± 200 kPa (595 ± 29 psi)     
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(1) N = Normal, M = Monitor, A = Action

Accumulator (Pilot) - Test and Charge

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Table 16
"Accumulator (Pilot) - Test and Charge" 
Status(1)  Description  Specification  Actual  Comments 
  Pilot Accumulator  1035 kPa (150 psi)    Should stay above 1035 kPa (150 psi) for 20 seconds 
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(1) N = Normal, M = Monitor, A = Action

Main Control Valve

Reference: Refer to Testing & Adjusting, UENR6215 for more detail on the following tests.

Relief Valve (Main) - Test and Adjust (Heavy Lift)

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Table 17
"Relief Valve (Main) - Test and Adjust (Heavy Lift)" 
Status(1)  Description  Machine Settings  Specification  Actual  Comments 
  Standard  Speed Dial "10"
AEC switch OFF 		 35000 ± 500 kPa (5076 ± 73 psi)     
  Heavy Lift (2) (If Equipped)  36000 ± 500 kPa (5221 ± 73 psi)    
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(1) N = Normal, M = Monitor, A = Action
(2) The main relief valve should have a 1000 kpa (145 psi)pressure difference between heavy lift mode and standard lift mode.

Relief Valve (Line) - Test and Adjust

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Table 18
"Relief Valve (Line) - Test and Adjust" 
  Machine Settings  Main Relief Pressure(1) 
Standard lift 35000 ± 500 kPa (5076 ± 73 psi)
Heavy lift
(If Equipped) 		36000 ± 500 kPa (5221 ± 73 psi)
Status(2)  Cylinder(3)  Cylinder Position  Engine Speed  Relief Pressure Setting  Actual  Comments 
  Boom  Extended  Speed Dial "10"
AEC switch OFF 		 39500 ± 500 kPa (5729 ± 73 psi)     
  Retracted 38000 ± 500 kPa (5511 ± 73 psi)   
  Stick  Extended  38500 ± 500 kPa (5584 ± 73 psi)    
  Retracted 39500 ± 500 kPa (5729 ± 73 psi)   
  Bucket  Extended  38000 ± 500 kPa (5511 ± 73 psi)    
  Retracted  
Show/hide table
(1) System pressure setting before temporary setting adjustment
(2) N = Normal, M = Monitor, A = Action
(3) Heavy lift and Standard lift use the same line relief settings.

Swing System

Reference: Refer to Testing & Adjusting, UENR6215 for more detail on the following tests.

Relief Valve (Swing) - Test and Adjust

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Table 19
"Relief Valve (Swing) - Test and Adjust" 
Machine Settings  Engine Speed 
Engine speed dial "10"
AEC switch OFF
Status(1)  Description  Specification  Actual  Comments 
  Right Swing  26000 ± 1000 kPa (3770 ± 145 psi)     
  Left Swing   
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(1) N = Normal, M = Monitor, A = Action

Swing Bearing Movement - Measure

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Table 20
"Swing Bearing Movement - Measure" 
Status(1)  Description  Specification  Actual  Comments 
New Service Limit
  Vertical Movement of Swing Bearing  2.0 mm (0.08 inch)  4.0 mm (0.16 inch)     
  Circular Movement of Swing Bearing  4.5 mm (0.18 inch)  13.5 mm (0.53 inch)     
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(1) N = Normal, M = Monitor, A = Action

Travel System

Reference: Refer to Testing & Adjusting, UENR6215 for more detail on the following tests.

Relief Valve (Crossover) - Test and Adjust

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Table 21
"Relief Valve (Crossover) - Test and Adjust" 
  Machine Settings  Engine Speed  Main Relief Pressure(1) 
Speed dial "10"
AEC switch OFF 		Implement 35000 ± 500 kPa (5076 ± 73 psi) 
Travel
Status(2)  Description  Direction  Relief Pressure Setting  Actual  Comments 
  Right Travel  Forward  37500 ± 500 kPa (5439 ± 73 psi)     
  Reverse  
  Left Travel  Forward   
  Reverse  
Show/hide table
(1) System Pressure setting before temporary setting adjustment
(2) N = Normal, M = Monitor, A = Action

S.O.S

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Table 22
Status(1)  Description  Obtain  Comments 
  Engine Oil Sample     
  Engine Coolant Sample (Level II)     
  Hydraulic Oil Sample     
  Swing Drive Oil Sample     
  Right Final Drive Oil Sample     
  Left Final Drive Oil Sample     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Caterpillar Information System:

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