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D8T Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar


D8T Track-Type Tractor TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

D8R DWJ
Track-Type Tractor
D8R (S/N: JR81-UP; DWJ1-UP)
D8T (S/N: JJ51-UP; MB81-UP)

Introduction

Inspections are the most basic form of condition monitoring. They 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 before problems occur.

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

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 in order to prevent stress on battery connections (terminals).    Refer to Operation and Maintenance Manual, SEBU9416, "Battery and Battery Cables". 
  Battery Test  12.4 VDC or more    Refer to Testing and Adjusting, SENR9832, "Battery -Test". 
  Charging System Test  28 ± 1 V    Refer to Testing and Adjusting, SENR9832, "Charging System - Test"
Refer to Special Instruction, REHS0354, "Charging System Troubleshooting" 
  Electric Starting System Test      Refer to Testing and Adjusting, SENR9832, "Electric Starting System - Test" 
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(1) N = Normal, M = Monitor, A = Action

Engine

Cooling System

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Table 2
Status(1)  Description  Specification  Actual  Comments 
  Radiator Pressure Relief (Radiator Cap)(2)      Use 9S-8140 Pressurizing Pump to test the radiator pressure cap 20 kPa (3 psi) more than the pressure marked on the cap. 
  Freezing Point of Engine Coolant       
  Conditioner Test of Engine Coolant       
  Belt Tension  534 N (120 lb) for new belts
400 N (90 lb) for used belts 		   Auto Adjust Belt Tensioner 
  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 
  Fuel Pressure at low idle  538 kPa (78 psi)     
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(1) N = Normal, M = Monitor, A = Action

Lubrication System

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Table 4
Status(1)  Description  Specification  Actual  Comments 
  Engine Oil Pressure  70 kPa (10 psi)     
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(1) N = Normal, M = Monitor, A = Action

Basic Engine

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Table 5
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed at Low Idle       
  Engine Speed at High Idle       
  Cylinder Cutout Test      Cat® Electronic Technician (Cat ET) Service Tool 
  Engine Crankcase Pressure (Blowby)       
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(1) N = Normal, M = Monitor, A = Action

Air Inlet and Exhaust System

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Table 6
Status(1)  Description  Specification  Actual  Comments 
  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, M0079658 for more detail on the following test.

Operational Checks

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Table 7
Status(1)  Description  Specification  Actual  Comments 
  Bulldozer Lift Cylinder (Full up to ground (Quick-drop))  0.9 to 1.3 seconds     
  Bulldozer Lift Cylinder (Ground to full up)  2.8 to 3.5 seconds     
  Bulldozer Lift Cylinder (Pause at ground after quick-drop)  1.4 to 2.5 seconds     
  Bulldozer Lift Cylinder (Full down to full up)  3.8 to 4.5 seconds     
  Bulldozer Lift Cylinder (From ground to full down after pause)  1.3 to 2.0 seconds     
  Bulldozer Tilt Cylinder (Full tilt left to full tilt right)
Bulldozer Tilt Cylinder (Full tilt right to full tilt left)
SU-Blade or U-Blade (single tilt) 		 2.4 seconds     
  Bulldozer Tilt Cylinder (Full tilt right to full tilt left)
SU-Blade or U-Blade (dual tilt) 		 1.8 seconds     
  Bulldozer Tilt Cylinder (Full tilt left to full tilt right)
SU-Blade or U-Blade (dual tilt) 		 2.2 seconds     
  Bulldozer Tilt Cylinder (Full tilt right to full tilt left)
A blade 		 2.1 seconds     
  Bulldozer Tilt Cylinder (Full tilt left to full tilt right)
A blade 		 2.5 seconds     
  Ripper Cylinder (Full down to full up)  4.2 seconds     
  Ripper Cylinder (Full up to full down)  3.0 seconds     
  Ripper Cylinder (Full shank in to full shank out) (retract the cylinder)  4.9 seconds     
  Ripper Cylinder (Full shank out to full shank in) (extend the cylinder)  6.1 seconds     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Cylinder Drift Test

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Table 8
Status(1)  Description  Specification  Actual  Comments 
  Bulldozer Lift Cylinder Drift Test  38.0 mm (1.50 inch) Maximum at 28° to 48° C (83° to 118° F) for 5 minutes     
38.0 mm (1.50 inch) Maximum at 49° to 68° C (120° to 155° F) for 2.7 minutes  
38.0 mm (1.50 inch) Maximum at 69° to 88° C (156° to 190° F) for 1.7 minutes  
  Bulldozer Tilt Cylinder Drift Test  11.0 mm (0.43 inch) Maximum at 28° to 48° C (83° to 118° F) for 5 minutes     
11.0 mm (0.43 inch) Maximum at 49° to 68° C (120° to 155° F) for 2.7 minutes  
11.0 mm (0.43 inch) Maximum at 69° to 88° C (156° to 190° F) for 1.7 minutes  
  Ripper Lift Cylinder Drift Test  10.0 mm (0.39 inch) Maximum at 28° to 48° C (83° to 118° F) for 5 minutes     
10.0 mm (0.39 inch) Maximum at 49° to 68° C (120° to 155° F) for 2.7 minutes  
10.0 mm (0.39 inch) Maximum at 69° to 88° C (156° to 190° F) for 1.7 minutes  
  Ripper Tip Cylinder Drift Test  6.0 mm (0.24 inch) Maximum at 28° to 48° C (83° to 118° F) for 5 minutes     
6.0 mm (0.24 inch) Maximum at 49° to 68° C (120° to 155° F) for 2.7 minutes  
6.0 mm (0.24 inch) Maximum at 69° to 88° C (156° to 190° F) for 1.7 minutes  
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(1) N = Normal, M = Monitor, A = Action

Hydraulic System

Reference: Refer to Testing & Adjusting, M0079658 for more detail on the following test.

Steering Operation Checks

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Table 9
Status(1)  Description  Specification  Actual  Comments 
  Steering Turn Diameter Check - Full Steer Left in First Gear Forward and HIGH IDLE with the blade raised and in the HOLD position  1.2 to 1.8 m (3.94 to 5.91 ft)     
  Steering Turn Diameter Check - Full Steer Right in First Gear Forward and HIGH IDLE with the blade raised and in the HOLD position  1.2 to 1.8 m (3.94 to 5.91 ft)     
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(1) N = Normal, M = Monitor, A = Action

Piston Pump (Implement) - Test & Adjust

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Table 10
Status(1)  Description  Specification  Actual  Comments 
  Pump Discharge Pressure at Standby (HA)  2850 ± 750 kPa (413 ± 109 psi)     
  Margin Pressure While the Blade is in Motion (HA) - (HB)  2140 ± 340 kPa (310 ± 49 psi)     
  High Pressure Cut off Pressure (HA)  23994 ± 517 kPa (3480 ± 75 psi)     
  Relief Valve (Main) Pressure  27600 ± 400 kPa (4003 ± 58 psi)     
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(1) N = Normal, M = Monitor, A = Action

Relief Valve (Main) - Test and Adjust

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Table 11
Status(1)  Description  Specification  Actual  Comments 
  Relief Valve (Main) - Test and Adjust  27600 ± 400 kPa (4003 ± 58 psi)     
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(1) N = Normal, M = Monitor, A = Action

Accumulator - Test and Charge

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Table 12
Status(1)  Description  Specification  Actual  Comments 
  Accumulator Charge Pressure at Oil Temperature of 21° C (70 ° F)  1725 kPa (250 psi)     
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(1) N = Normal, M = Monitor, A = Action

Hydraulic Fan Speed (On Demand) - Test and Adjust

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Table 13
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed  High Idle     
  Maximum Mechanical High Pressure  19500 ± 800 kPa (2828 ± 116 psi)     
  Minimum Pump Pressure  2100 ± 250 kPa (305 ± 36 psi)     
  Fan Reversing Valve torque  50 N·m (37 lb ft)     
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(1) N = Normal, M = Monitor, A = Action

Power Train System

Reference: Refer to Testing & Adjusting, M0079658 for more detail on the following test.

Relief Valve (Transmission) - Test and Adjust

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Table 14
Status(1)  Description  Specification  Actual  Comments 
  Low Idle (P)  2585 ± 105 kPa (375 ± 15 psi)     
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(1) N = Normal, M = Monitor, A = Action

Relief Valve (Torque Converter Inlet) Pressure - Test

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Table 15
Status(1)  Description  Specification  Actual  Comments 
  High Idle (M)  Less than 900 ± 70 kPa (130 ± 10 psi)     
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(1) N = Normal, M = Monitor, A = Action

Relief Valve (Torque Converter Outlet) Pressure - Test and Adjust

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Table 16
Status(1)  Description  Specification  Actual  Comments 
  Low Idle THIRD SPEED FORWARD STALL(N)  379 ± 69 kPa (55 ± 10 psi)     
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(1) N = Normal, M = Monitor, A = Action

Transmission Lubrication Oil Pressure - Test

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Table 17
Status(1)  Description  Specification  Actual  Comments 
  High Idle (L1)  217 ± 45 kPa (32 ± 7 psi)     
  Low Idle (L1)  15 ± 14 kPa (2 ± 2 psi)     
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(1) N = Normal, M = Monitor, A = Action

Flywheel Lubrication Oil Pressure - Test

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Table 18
Status(1)  Description  Specification  Actual  Comments 
  High Idle (L2)  380 ± 170 kPa (55 ± 25 psi)     
  Low Idle (L2)  205 ± 105 kPa (30 ± 15 psi)     
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(1) N = Normal, M = Monitor, A = Action

Transmission Clutch Pressure - Test

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Table 19
Status(1)  Description  Specification  Actual  Comments 
  First Speed Forward (Low Idle)  Clutch 2 2585 ± 105 kPa (375 ± 15 psi)     
Clutch 5 2240 ± 170 kPa (325 ± 25 psi)  
  Second Speed Forward (Low Idle)  Clutch 2 and Clutch 4 2585 ± 105 kPa (375 ± 15 psi)     
  Third Speed Forward (Low Idle)  Clutch 2 and Clutch 3 2585 ± 105 kPa (375 ± 15 psi)     
  Neutral (Low Idle)  Clutch 3 2585 ± 105 kPa (375 ± 15 psi)     
  First Speed Reverse (Low Idle)  Clutch 1 2585 ± 105 kPa (375 ± 15 psi)     
Clutch 5 2240 ± 170 kPa (325 ± 25 psi)  
  Second Speed Reverse (Low Idle)  Clutch 1 and Clutch 4 2585 ± 105 kPa (375 ± 15 psi)     
  Third Speed Reverse (Low Idle)  Clutch 1 and Clutch 3 2585 ± 105 kPa (375 ± 15 psi)     
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(1) N = Normal, M = Monitor, A = Action

Steering System

Reference: Refer to Testing & Adjusting, M0079658 for more detail on the following test.

Steering Pump - Test and Adjust

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Table 20
Status(1)  Description  Specification  Actual  Comments 
  POR at 1600 rpm  40505 ± 1555 kPa (5875 ± 226 psi)     
  Charge Pressure at High Idle  2930 ± 240 kPa (425 ± 35 psi)     
  Crossover and Makeup Valve at Bench Test  46000 ± 1000 kPa (6672 ± 145 psi)     
  Mechanical Neutral at 1500 rpm  345 kPa (50 psi) between pressure taps     
  Hydraulic Neutral at 1500 rpm  48 kPa (7 psi) between pressure taps     
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(1) N = Normal, M = Monitor, A = Action

Braking System

Reference: Refer to Testing & Adjusting, M0079658 for more detail on the following test.

Brake Pressure - Test

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Table 21
Status(1)  Description  Specification  Actual  Comments 
  High Idle at Pressure Tap (B1)  2558 ± 235 kPa (371 ± 34 psi)     
  Low Idle at Pressure Tap (B1)  2385 ± 190 kPa (346 ± 28 psi)     
  High Idle Right Brake  2558 ± 235 kPa (371 ± 34 psi)     
  Low Idle Right Brake  2385 ± 190 kPa (346 ± 28 psi)     
  High Idle Left Brake  2558 ± 235 kPa (371 ± 34 psi)     
  Low Idle Left Brake  2385 ± 190 kPa (346 ± 28 psi)     
  High Idle Left Brake Lube  140 ± 70 kPa (20 ± 10 psi)     
  Low Idle Left Brake Lube  18 +18 -17 kPa (2.6 +2.6 -2.5 psi)     
  High Idle Right Brake Lube  140 ± 70 kPa (20 ± 10 psi)     
  Low Idle Right Brake Lube  21 +21 -20 kPa (3 +3 -2.9 psi)     
  Parking Brake or Service Brake engaged at Pressure Tap (B1)  Less than 50 kPa (7 psi)     
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(1) N = Normal, M = Monitor, A = Action

S.O.S

Reference: Refer to Operation and Maintenance Manual, SEBU9416, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

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Table 22
Status(1)  Description  Obtain  Comments 
  Engine Oil Sample     
  Engine Coolant Sample (Level I)       
  Engine Coolant Sample (Level II)     
  Hydraulic Oil Sample     
  Transmission Oil Sample       
  Power Train System Oil Sample     
  Final Drive Oil Sample     
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(1) N = Normal, M = Monitor, A = Action

Caterpillar Information System:

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