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PL72 Pipelayer TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar


PL72 Pipelayer TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

PL72 P72
Pipelayer
PL72 (S/N: P721-UP; P731-UP)

Introduction

Inspections are the most basic form of condition monitoring. Inspections are easy to perform and are effective at helping you spot equipment health issues. Proactive monitoring and analysis of equipment information allows 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

Show/hide table
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  12.4 VDC or more    Refer to Special Instruction, SEHS7633, "Battery Test Procedure". 
  Charging System Test  28 ± 1 VDC    Refer to Special Instruction, REHS0354, "Charging System Troubleshooting". 
  Electric Starting System Test  12 VDC to 16 VDC at −23° C (−10° F) to −7° C (19° F)    Refer to System Operation/Testing and Adjusting, KENR9368, "Electric Starting System - Test" 
14 VDC to 18 VDC at −7° C (19° F) to 10° C (50° F)
16 VDC to 24 VDC at 10° C (50° F) to 27° C (80° F)
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Engine

For PL72 (S/N: P721-UP)

Reference: Refer to Testing & Adjusting, UENR3402 for more detail on the following tests.

Cooling System

Show/hide table
Table 2
Status(1)  Description  Specification  Actual  Comments 
  Radiator Pressure Relief (Radiator Cap)(2)  -     
  Freezing Point of Engine Coolant  -     
  Conditioner Test of Engine Coolant  -     
  Belt Tension  -    Refer to Operation and Maintenance Manual. 
  Difference between the Upper and Lower Radiator Tank Temperatures  2° ± 5°C (3° ± 9°F)     
  Jacket Water Inlet Temperature from Cooling System  90 ° ± 3°C (192° ± 5°F)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Test for the pressure that is listed on the cap.

Fuel System

Show/hide table
Table 3
Status(1)  Description  Specification  Actual  Comments 
  Fuel Pressure  820 ± 131 kPa (119 ± 19 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Lubrication System

Show/hide table
Table 4
Status(1)  Description  Specification  Actual  Comments 
  Engine Oil Pressure at Low Idle  103 kPa to 600 kPa (15 psi to 58 psi)     
  Engine Oil Pressure at High Idle  207 kPa to 600 kPa (30 psi to 87 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Basic Engine

Show/hide table
Table 5
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed at Low Idle  700 ± 10 rpm     
  Engine Speed at High Idle  2200 ± 10 rpm     
  Torque Converter Stall Test Engine RPM  1400 ± 10 rpm     
  Cylinder Cutout Test  -    Caterpillar Electronic Technician 
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Air Inlet and Exhaust System

Show/hide table
Table 6
Status(1)  Description  Specification  Actual  Comments 
  Torque Converter Stall Test Boost Pressure  113 ± 18 cm-Hg (45.5 ± 7 In-Hg)     
  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)  -     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Compare the exhaust temperature variance at each exhaust port.

For PL72 (S/N: P731-UP)

Reference: Refer to Testing & Adjusting, SENR9830 for more detail on the following tests.

Cooling System

Show/hide table
Table 7
Status(1)  Description  Specification  Actual  Comments 
  Radiator Pressure Relief (Radiator Cap)(2)  -     
  Freezing Point of Engine Coolant  -     
  Conditioner Test of Engine Coolant  -     
  Belt Tension  -    Refer to Operation and Maintenance Manual. 
  Difference between the Upper and Lower Radiator Tank Temperatures  2° ± 5°C (3° ± 9°F)     
  Jacket Water Inlet Temperature from Cooling System  90 ° ± 3°C (192° ± 5°F)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Test for the pressure that is listed on the cap.

Fuel System

Show/hide table
Table 8
Status(1)  Description  Specification  Actual  Comments 
  Fuel Pressure  593 kPa to 951 kPa (86 psi to 138 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Lubrication System

Show/hide table
Table 9
Status(1)  Description  Specification  Actual  Comments 
  Engine Oil Pressure at Low Idle  103 kPa to 600 kPa (15 psi to 87 psi)     
  Engine Oil Pressure at High Idle  207 kPa to 600 kPa (30 psi to 87 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Basic Engine

Show/hide table
Table 10
Status(1)  Description  Specification  Actual  Comments 
  Engine Speed at Low Idle  700 ± 10 rpm     
  Engine Speed at High Idle  2200 ± 10 rpm     
  Torque Converter Stall Test Engine RPM  1300 ± 10 rpm     
  Cylinder Cutout Test  -    Caterpillar Electronic Technician 
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Air Inlet and Exhaust System

Show/hide table
Table 11
Status(1)  Description  Specification  Actual  Comments 
  Torque Converter Stall Test Boost Pressure  113 ± 18 cm-Hg (45.5 ± 7 In-Hg)     
  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)  -     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Compare the exhaust temperature variance at each exhaust port.

Hydraulic System

Reference: Refer to Testing & Adjusting, UENR4132, "Hydraulic Systems" for more detail on the following test.

Counterweight Relief Valve - Test and Adjust

Show/hide table
Table 12
Status(1)  Description  Specification  Actual  Comments 
  Presure at (CWP) pressure tap at HIGH IDLE with the CTWT stalled  20750 ± 350 kPa (3010 ± 50 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Accumulator - Test and Charge

Show/hide table
Table 13
Status(1)  Description  Specification  Actual  Comments 
  Accumulator System Pressure at pressure tap (CP) at HIGH IDLE  3470 ± 200 kPa (503 ± 29 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Fan Hydraulic System

Reference: Refer to Testing & Adjusting, UENR4132, "Hydraulic Systems" for more detail on the following test.

Hydraulic Fan Speed (On Demand) - Test and Adjust

Show/hide table
Table 14
Status(1)  Description  Specification  Actual  Comments 
  Pressure Override Valve (POR) Pressure at (FMA) and (FMB) taps at LOW IDLE  24000 ± 1000 kPa (3480 ± 145 psi)     
  Crossover Relief and Makeup Valve Pressure (Bench Test)  32000 ± 1000 kPa (4641 ± 145 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Power Train System

Reference: Refer to Testing & Adjusting, UENR4132, "Power Train System" for more detail on the following test.

Relief Valve (Transmission) - Test and Adjust

Show/hide table
Table 15
Status(1)  Description  Specification  Actual  Comments 
  LOW IDLE at pressure tap (P1)  2600 ± 104 kPa (377 ± 15 psi)     
  Pressure at clutch (5) at LOW IDLE at the pressure tap for clutch (5)  2250 ± 170 kPa (325 ± 25 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Relief Valve (Torque Converter Inlet) Pressure - Test

Show/hide table
Table 16
Status(1)  Description  Specification  Actual  Comments 
  Cold oil, start at LOW IDLE slowly increase engine rpm at pressure tap (M)  Less than 900 ± 70 kPa (130 ± 10 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

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

Show/hide table
Table 17
Status(1)  Description  Specification  Actual  Comments 
  LOW IDLE NEUTRAL at pressure tap (N)  265 ± 50 kPa (38.5 ± 7.25 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Transmission Lubrication Oil Pressure - Test

Show/hide table
Table 18
Status(1)  Description  Specification  Actual  Comments 
  LOW IDLE at pressure tap (L1)  24 ± 14 kPa (3.5 ± 2 psi)     
  HIGH IDLE at pressure tap (L1)  173 ± 35 kPa (25 ± 5 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Flywheel Lubrication Oil Pressure - Test

Show/hide table
Table 19
Status(1)  Description  Specification  Actual  Comments 
  LOW IDLE at pressure tap (L2)  207 ± 69 kPa (30 ± 10 psi)     
  HIGH IDLE at pressure tap (L2)  300 ± 100 kPa (44 ± 15 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Steering System

Reference: Refer to Testing & Adjusting, UENR4132, "Hydraulic Systems" for more detail on the following test.

Piston Pump (Steering) - Test and Adjust

Show/hide table
Table 20
Status(1)  Description  Specification  Actual  Comments 
  Crossover Relief/Makeup Valve Pressure (Bench Test)  46000 ± 1000 kPa (6670 ± 145 psi)     
  High-Pressure Cutoff at pressure tap (SMA) Engine RPM set to 1850 MAX STEER LEFT  42000 ± 700 kPa (6092 ± 102 psi)     
  High-Pressure Cutoff at pressure tap (SMB) Engine RPM set to 1850 MAX STEER RIGHT  42000 ± 700 kPa (6092 ± 102 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Braking System

Reference: Refer to Testing & Adjusting, UENR4132, "Braking System" for more detail on the following test.

Brake Pressure - Test

Show/hide table
Table 21
Status(1)  Description  Specification  Actual  Comments 
  Brake Pressure at pressure tap (B1) or (B2) with the Parking Brake On or the Service Brakes Fully Engaged  50 kPa (7.5 psi) or less     
  LOW IDLE at pressure tap (B1) or (B2)  2400 ± 187 kPa (348 ± 27 psi)     
  HIGH IDLE at pressure tap (B1) or (B2)  2590 ± 195 kPa (375 ± 28 psi)     
  LOW IDLE Left Final Drive Lube at pressure tap (LB1)  11 ± 10 kPa (1.6 ± 1.5 psi)     
  HIGH IDLE Left Final Drive Lube at pressure tap (LB1)  100 ± 50 kPa (14.5 ± 7.25 psi)     
  LOW IDLE Right Final Drive Lube at pressure tap (LB2)  11 ± 10 kPa (1.6 ± 1.5 psi)     
  HIGH IDLE Right Final Drive Lube at pressure tap (LB2)  80 ± 45 kPa (11.6 ± 6.5 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Winch System

Reference: Refer to Testing & Adjusting, UENR4132, "Winch System" for more detail on the following test.

Piston Pump (Charge) - Test and Adjust

Show/hide table
Table 22
Status(1)  Description  Specification  Actual  Comments 
  High-pressure Cutoff pressure at tap (CB) at HIGH IDLE  4000 ± 350 kPa (580 ± 50 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Winch Brake Oil Pressure - Test

Show/hide table
Table 23
Status(1)  Description  Specification  Actual  Comments 
  Pressure at tap (HB) or (BB) at HIGH IDLE with the winches not moving  0 kPa (0 psi)     
  Pressure at tap (HB) or (BB) at HIGH IDLE with the winches moving in the LOWER direction  4000 ± 350 kPa (580 ± 50 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

S.O.S

Reference: Refer to Operation and Maintenance Manual, SEBU9278, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

Show/hide table
Table 24
Status(1)  Description  Obtain  Comments 
  Engine Oil Sample     
  Engine Coolant Sample (Level II)     
  Hydraulic Oil Sample     
  Transmission Oil Sample     
  Right Final Drive Oil Sample     
  Left Final Drive Oil Sample     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

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