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MH3022 and MH3024 Material Handler TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565} Caterpillar


MH3022 and MH3024 Material Handler TA2 Technical Inspection {0372, 1000, 7000, 753T, 7565}

Usage:

MH3022 FM2
Material Handler
MH3022 (S/N: FM21-UP)
MH3024 (S/N: FM41-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.

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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 in order 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)
Show/hide table
(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, UENR4467, "Electric Starting System - Test".

Engine

Cooling System

Show/hide table
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       
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 of the Low-Pressure Fuel System  150 kPa (22 psi)     
  Fuel pressure of the High-Pressure Fuel System  200 MPa (29008 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Lubrication System

Show/hide table
Table 4
Status(1)  Description  Specification  Actual  Comments 
  The minimum oil pressure at the maximum engine speed  315 kPa (46 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action

Engine Performance - Test (Engine Speed)

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Table 5
"Engine Performance - Test (Engine Speed)" 
Status(1)  Description  Specification  Actual  Comments 
MH3022 MH3024 
New Rebuild  Service Limit  New  Rebuild  Service Limit 
  No Load High Idle
AESC OFF 		 1659 ± 20 rpm  1799 ± 20 rpm     
  With Load High Idle
AESC OFF 		 1550 rpm  1700 rpm     
  No Load Low Idle
AESC OFF 		 1136 ± 20 rpm  1106 ± 20 rpm     
  No Load Low Idle
AESC ON 		 800 rpm  800 rpm     
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 
  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.

Performance Checks

Reference: Refer to Testing & Adjusting, UENR5749, "Performance Tests" for more detail on the following test.

Operational Checks

Swing Speed and Overswing on Level Ground - Check

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Table 7
"Swing Speed and Overswing on Level Ground - Check" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  Right Swing  8.2 ± 0.5  8.9 ± 0.5     
  Left Swing 
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Number of revolutions in 60 seconds.

Cylinder Drift - Check

Show/hide table
Table 8
"Cylinder Drift - Check" 
MH3022 
Status(1)  Description  Cylinder
Position 		 Specifications(2)  Actual  Comments 
Maximum Drift
without Lowering Control Valve(3) 		Maximum Drift
with Lowering Control Valve(3) 
  Boom  Extension  14 mm (0.6 inch)  3 mm (0.12 inch)     
  Retraction 25 mm (0.9 inch)  3 mm (0.12 inch)     
  Stick  Extension  25 mm (0.9 inch)  3 mm (0.12 inch)     
  Retraction 42 mm (1.7 inch)  3 mm (0.12 inch)     
  Bucket  Extension  34 mm (1.3 inch)  3 mm (0.12 inch)     
  Retraction 63 mm (2.5 inch)  3 mm (0.12 inch)     
  VA Boom  Extension  19 mm (0.7 inch)  3 mm (0.12 inch)     
  Retraction 25 mm (0.9 inch)  3 mm (0.12 inch)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Cylinder Operating Speed (seconds)
(3) Cylinder pressure of 28000 kPa (4060 psi) was used in order to calculate the maximum drift.

Show/hide table
Table 9
"Cylinder Drift - Check" 
MH3024 
Status(1)  Description  Cylinder
Position 		 Specifications(2)  Actual  Comments 
Maximum Drift
without Lowering Control Valve(3) 		Maximum Drift
with Lowering Control Valve(3) 
  Boom  Extension  11 mm (0.4 inch)  4 mm (0.16 inch)     
  Retraction 19 mm (0.7 inch)  4 mm (0.16 inch)     
  Stick  Extension  19 mm (0.7 inch)  4 mm (0.16 inch)     
  Retraction 35 mm (1.4 inch)  4 mm (0.16 inch)     
  Bucket  Extension  25 mm (0.9 inch)  4 mm (0.16 inch)     
  Retraction 47 mm (1.9 inch)  4 mm (0.16 inch)     
  VA Boom  Extension  14 mm (0.6 inch)  4 mm (0.16 inch)     
  Retraction 19 mm (0.7 inch)  4 mm (0.16 inch)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Cylinder Operating Speed (seconds)
(3) Cylinder pressure of 28000 kPa (4060 psi) was used in order to calculate the maximum drift.

Cylinder Speed - Check

Show/hide table
Table 10
"Cylinder Speed - Check" 
MH3022 
Status(1)  Description  Cylinder
Position 		 Specifications(2)  Actual  Comments 
Minimum Maximum 
  Boom  Extension  4.7  6.3     
  Retraction N/A  N/A     
  Stick  Extension  4.6  6.0     
  Retraction 3.5  6.0     
  Bucket  Extension  1.6  2.8     
  Retraction 1.2  2.3     
  VA Boom  Extension  N/A  N/A     
  Retraction N/A  N/A     
  Hydraulic Cab Riser  Extension  10.0  16.0     
  Retraction 14.0  21.0     
  Stabilizer  Extension  N/A  N/A     
  Retraction N/A  N/A     
  Dozer Blade  Extension  N/A  N/A     
  Retraction N/A  N/A     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Cylinder Operating Speed (seconds)

Show/hide table
Table 11
"Cylinder Speed - Check" 
MH3024 
Status(1)  Description  Cylinder
Position 		 Specifications(2)  Actual  Comments 
Minimum Maximum 
  Boom  Extension  4.8  6.2     
  Retraction N/A  N/A     
  Stick  Extension  6.0  7.7     
  Retraction 4.2  6.2     
  Bucket  Extension  1.0  2.2     
  Retraction 1.0  2.0     
  VA Boom  Extension  N/A  N/A     
  Retraction N/A  N/A     
  Hydraulic Cab Riser  Extension  10.0  16.0     
  Retraction 14.0  21.0     
  Stabilizer  Extension  N/A  N/A     
  Retraction N/A  N/A     
  Dozer Blade  Extension  N/A  N/A     
  Retraction N/A  N/A     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Cylinder Operating Speed (seconds)

Hydraulic System

Reference: Refer to Testing & Adjusting, UENR5749 for more detail on the following test.

Pilot System

Relief Valve (Pilot) - Test and Adjust

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Table 12
"Relief Valve (Pilot) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Pilot Relief Valve  3200 to 3400 kPa (464 to 493 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Solenoid Valve - Test

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Table 13
"Solenoid Valve - Test" 
Status(1)  Specifications(2)  Actual  Comments 
Current (amp)(3) Pressure 
  0.3  680 ± 250 kPa (99 ± 36 psi)     
  0.4  1085 ± 250 kPa (157 ± 36 psi)     
  0.6  1891 ± 250 kPa (274 ± 36 psi)     
  0.8  2697 ± 250 kPa (391 ± 36 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".
(3) Machine settings for this test.

Pilot System Pressure - Test (Travel)

Show/hide table
Table 14
"Pilot System Pressure - Test (Travel)" 
Status(1)  Specifications(2)  Actual  Comments 
Current (amp)(3) Pressure 
  0.3  680 ± 250 kPa (99 ± 36 psi)     
  0.4  1085 ± 250 kPa (157 ± 36 psi)     
  0.6  1891 ± 250 kPa (274 ± 36 psi)     
  0.8  2697 ± 250 kPa (391 ± 36 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".
(3) Machine settings for this test.

Accumulator (Pilot) - Test and Charge

Show/hide table
Table 15
"Accumulator (Pilot) - Test and Charge" 
Status(1)  Description  Specifications(2)  Actual  Comments 
Temperature of Gas Charge Pressure
  Pilot Manifold Accumulator  −7 °C (20 °F)  906 kPa (131 psi)     
  −1 °C (30 °F) 925 kPa (134 psi)     
  4 °C (40 °F) 943 kPa (137 psi)     
  10 °C (50 °F) 962 kPa (140 psi)     
  16 °C (60 °F) 981 kPa (142 psi)     
  21 °C (70 °F) 1000 kPa (145 psi)     
  27 °C (80 °F) 1019 kPa (148 psi)     
  32 °C (90 °F) 1038 kPa (151 psi)     
  38 °C (100 °F) 1057 kPa (153 psi)     
  43 °C (110 °F) 1075 kPa (156 psi)     
  49 °C (120 °F) 1094 kPa (159 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Charging Pressure and Temperature Relationship for a typical 1000 kPa (145 psi) Accumulator.

Pilot Pump (High-Pressure Cutoff) - Test and Adjust

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Table 16
"Pilot Pump (High-Pressure Cutoff) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  High-Pressure cutoff  23000 kPa (3336 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Pilot Pump (Maximum Displacement) - Test

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Table 17
"Pilot Pump (Maximum Displacement) - Test" 
Status(1)  Description  Specifications(2)  Actual(3)  Comments 
Target Maximum Displacement Engine Speed Engine / Pump Ratio  Calculated Factor  Pump Flow ± 5 percent 
  Maximum Displacement  32 ccm/rev    1  0.96       
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".
(3) Maximum Displacement = Pump Flow / (Engine Speed/1000) x Ratio x Calculated Factor.

Pilot Pump (Minimum Displacement) - Test

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Table 18
"Pilot Pump (Minimum Displacement) - Test" 
Status(1)  Description  Specifications(2)  Actual(3)  Comments 
Target Minimum Displacement Engine Speed Engine / Pump Ratio  Calculated Factor  Pump Flow ± 5 percent 
  Minimum Displacement  16 ccm/rev    1  0.96       
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".
(3) Minimum Displacement = Pump Flow / (Engine Speed/1000) x Ratio x Calculated Factor.

Pump System

Case Drain (Main Pump) - Test

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Table 19
"Case Drain (Main Pump) - Test" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Case Drain Pressure  200 kPa (29 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Main Pump - Test (Test without Flow Meter)

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Table 20
"Main Pump - Test (Test without Flow Meter)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  Target Engine Speed  1550 ± 3 rpm  1700 ± 3 rpm     
  Calculated Factor  12462  11067     
  Nominal Engine Torque  797 N·m (588 lb ft)  724 N·m (534 lb ft)     
  Estimated Nominal Torque  70 N·m (52 lb ft)     
  Transmission Output Speed
x
Main Pump Pressure
/
Calculated Factor
=
Main Pump Torque
± 5 Percent 		 Transmission Output Speed     
Main Pump Pressure    
Main Pump Torque    
  Nominal Engine Torque
-
Estimated Parasitic Torque
=
Target Main Pump Torque 		 Nominal Engine Torque     
Estimated Parasitic Torque    
Target Main Pump Torque    
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Main Pump - Test (Test with Flow Meter)

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Table 21
"Main Pump - Test (Test with Flow Meter)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  Target Engine Speed  1550 ± 3 rpm  1700 ± 3 rpm     
  Calculated Factor  256.99  281.6     
  Nominal Engine Torque  797 N·m (588 lb ft)  724 N·m (534 lb ft)     
  Estimated Nominal Torque  70 N·m (52 lb ft)     
  Main Pump Flow
x
Main Pump Pressure
x
Calculated Factor
=
Main Pump Torque
± 5 Percent 		 Main Pump Flow     
Main Pump Pressure    
Main Pump Torque    
  Nominal Engine Torque
-
Estimated Parasitic Torque
=
Target Main Pump Torque 		 Nominal Engine Torque     
Estimated Parasitic Torque    
Target Main Pump Torque    
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Main Pump (Destroke Pressure) - Test and Adjust

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Table 22
"Main Pump (Destroke Pressure) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  Main Pump Power Shift Pressure  1570 ± 10 kPa (228 ± 1 psi)  1377 ± 10 kPa (200 ± 1 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "7".

Main Control Valve

Main Control Valve (Stroke Limiter) - Test and Adjust

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Table 23
"Main Control Valve (Stroke Limiter) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Margin pressure  1800 ± 50 kPa (261 ± 7 psi)     
  Main pump pressure       
  Load sensing signal pressure       
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Main Control Valve (Unloading Valve) - Check

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Table 24
"Main Control Valve (Unloading Valve) - Check" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Margin pressure  2720 ± 150 kPa (395 ± 22 psi)     
  Main pump pressure       
  Load sensing signal pressure       
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Relief Valve (Signal Limiter) - Test and Adjust

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Table 25
"Relief Valve (Signal Limiter) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Standard load sensing signal pressure  33000 to 34000 kPa (4786to 4931 psi)     
  Heavy Lift  35000 to 36000 kPa (5076 to 5221 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Relief Valve (Main) - Test and Adjust

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Table 26
"Relief Valve (Main) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Main relief pressure  41000 to 43000 kPa (5947 to 6237 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Relief Valve (Line) - Test and Adjust (Implement)

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Table 27
"Relief Valve (Line) - Test and Adjust (Implement)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Line relief pressure  41000 to 43000 kPa (5947 to 6237 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Relief Valve (Line) - Test and Adjust (Maximum Relief Pressure (SmartBoom))

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Table 28
"Relief Valve (Line) - Test and Adjust (Maximum Relief Pressure (SmartBoom))" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  SmartBoom maximum relief pressure  41000 to 43000 kPa (5947 to 6237 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Relief Valve (Line) - Test and Adjust (Minimum Relief Pressure (SmartBoom))

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Table 29
"Relief Valve (Line) - Test and Adjust (Minimum Relief Pressure (SmartBoom))" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  SmartBoom minimum relief pressure  3000 kPa (435 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Boom System

Accumulator (Boom Dampening) - Test and Charge

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Table 30
"Accumulator (Boom Dampening) - Test and Charge" 
Status(1)  Description  Specifications(2)  Actual  Comments 
Load / Application
Low Weight Standard Heavy Weight 
  Boom Dampening Accumulator  8500 to 9500 kPa (1233 to 1378 psi)  11500 to 12500 kPa (1668 to 1813 psi)  14500 to 15500 kPa (2103 to 2248 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) The boom dampening accumulator charge pressure was tested at 20° C (68° F).

Control Valve (Boom Lowering) - Test (Equipped with SmartBoom)

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Table 31
"Control Valve (Boom Lowering) - Test (Equipped with SmartBoom)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Boom lowering relief pressure  41000 to 42000 kPa (5947 to 6092 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Pressure Switch (Overload Warning) - Test and Adjust (If Equipped)

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Table 32
"Pressure Switch (Overload Warning) - Test and Adjust (If Equipped)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Overload Warning Pressure Range  14000 to 22000 kPa (2030 to 3190 psi)     
  Calculated Overload Warning Pressure  OLWD Pressure = BCHP(3) x 0.7     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".
(3) Boom Cylinder Head Pressure

Swing System

Swing Pump Control (Mechanical Zero) - Test and Adjust

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Table 33
"Swing Pump Control (Mechanical Zero) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Swing Left  2000 to 2200 kPa (290 to 319 psi)     
  Swing Right   
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "5".

Swing Pump Control (High-Pressure Cutoff) - Test and Adjust

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Table 34
"Swing Pump Control (High-Pressure Cutoff) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  High-Pressure Cutoff  Left Swing  31000 to 32500 kPa (4496 to 4714 psi)  34000 to 35500 kPa (4931 to 5149 psi)     
  Right Swing  
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Swing Brake Pressure - Test

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Table 35
"Swing Brake Pressure - Test" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Swing Brake Pressure  3500 to 3700 kPa (508 to 537 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Relief Valve (Swing Charge Pressure) - Test and Adjust

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Table 36
"Relief Valve (Swing Charge Pressure) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Swing Charge Pressure  2000 to 2200 kPa (290 to 319 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Relief Valve (Swing Pump) - Test and Adjust (Line Relief Valves)

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Table 37
"Relief Valve (Swing Pump) - Test and Adjust (Line Relief Valves)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  Line Relief Valve Pressure  Left Swing  36200 ± 1000 kPa (5250 ± 145 psi)  39200 ± 1000 kPa (5686 ± 145 psi)     
  Right Swing  
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Travel System

Case Drain (Travel Motor) - Test

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Table 38
"Case Drain (Travel Motor) - Test" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Case Drain Pressure  300 kPa (44 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Travel Motor (Destroke Point) - Test and Adjust

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Table 39
"Travel Motor (Destroke Point) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Destroke Pressure  550 ± 50 kPa (80 ± 7 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Travel Motor (Upstroke Point) - Test and Adjust

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Table 40
"Travel Motor (Upstroke Point) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Upstroke Pressure  14000 to 14500 kPa (2031 to 2103 psi)     
  Main Relief Valve Pressure  28000 to 29000 kPa (4061 to 4206 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Relief Valve (Travel Motor) - Test and Adjust

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Table 41
"Relief Valve (Travel Motor) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Travel Motor Relief Pressure  42000 to 43000 kPa (6092 to 6237 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Travel Motor (Maximum Displacement) - Test and Adjust

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Table 42
"Travel Motor (Maximum Displacement) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
MH3022 MH3024
  Target Output Speed
(rpm) 		 272 ± 35  296 ± 40     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Steering and Brake Systems

Accumulator (Wheel Brake Charge Pressure) - Test and Adjust

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Table 43
"Accumulator (Wheel Brake Charge Pressure) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Wheel Brake Accumulator Charge Pressure (3)  4500 kPa (653 psi)     
  Cut-In Pressure  12000 to 13000 kPa (1740 to 1886 psi)     
  Cut-Out Pressure  15000 to 15300 kPa (2176 to 2219 psi)     
Show/hide table
(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10"
(3) The wheel brake accumulator charge pressure was tested at 20° C (68° F)

Brake Control Valve (Service) - Test and Adjust

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Table 44
"Brake Control Valve (Service) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Service Brake Pressure (Inactive)  Less than 35 kPa (5 psi)     
  Service Brake Pressure (Active)  7500 to 8000 kPa (1088 to 1160 psi)     
  Auto Service Brake Pressure (Active)  7700 to 9000 kPa (1117 to 1305 psi)     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".

Relief Valve (Steering) - Test

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Table 45
"Relief Valve (Steering) - Test" 
Status(1)  Description  Specifications (2)  Actual  Comments 
  Steering Relief Pressure  20000 ± 1000 kPa (2901 ± 145 psi)     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Fan System

Fan Pump (Maximum Displacement) - Test

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Table 46
"Fan Pump (Maximum Displacement) - Test" 
Status(1)  Description  Specifications(2)  Actual(3)  Comments 
Factor 1 Fan Speed Control Flow  Engine Speed  Factor 2 
  Maximum Displacement  24.8139    3500    1.106     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "1".
(3) Maximum Displacement = (Factor 1 x Fan Speed + Control Flow) / (Engine Speed x Factor 2).

Fan Pump Control (High-Pressure Cutoff) - Test and Adjust

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Table 47
"Fan Pump Control (High-Pressure Cutoff) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  High-Pressure Cutoff  22000 kPa (3191 psi)     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Work Tool Systems

Relief Valve (Line, Hammer) - Test and Adjust (If Equipped)

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Table 48
"Relief Valve (Line, Hammer) - Test and Adjust (If Equipped)" 
Status(1)  Description  Specifications(2)(3)  Actual  Comments 
  Port A  41000 to 43000 kPa (5947 to 6237 psi)     
  Port B   
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".
(3) The line relief pressures may vary. The pressure listed below is the maximum line relief pressure.

Relief Valve (Medium Pressure Function) - Test and Adjust

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Table 49
"Relief Valve (Medium Pressure Function) - Test and Adjust" 
Status(1)  Description  Specifications (2)  Actual  Comments 
  MPF relief valve  17500 to 20500 kPa (2538 to 2973 psi)     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Relief Valve (Second High-Pressure Function) - Test and Adjust

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Table 50
"Relief Valve (Second High-Pressure Function) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Port A  41000 to 43000 kPa (5947 to 6237 psi)     
  Port B   
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Relief Valve (Control Valve Combined Function) - Test and Adjust

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Table 51
"Relief Valve (Control Valve Combined Function) - Test and Adjust" 
Status(1)  Description  Specifications(2)  Actual  Comments 
Variable (Maximum) Mechanical (Maximum)
  MCV relief valve  33000 to 34000 kPa (4786 to 4931 psi)  36000 kPa (5221 psi)     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Flow (Control Valve Combined Function) - Test and Adjust

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Table 52
"Flow (Control Valve Combined Function) - Test and Adjust" 
Status(1)  Description  Specifications (2)  Actual  Comments 
  Maximum Flow  250 L/min (66 US gpm)     
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

Flow (Second High-Pressure Function)

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Table 53
"Flow (Second High-Pressure Function)" 
Status(1)  Description  Specifications(2)  Actual  Comments 
  Port A  Maximum 270 L/min (71 US gpm)     
  Port B   
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(1) N = Normal, M = Monitor, A = Action
(2) Engine Speed Dial "10".

S.O.S

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Table 54
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     
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(1) N = Normal, M = Monitor, A = Action

Caterpillar Information System:

An Improved Secondary Air Filter is Now Used on Certain F Series and F2 Series Backhoe Loaders {1051, 1054} An Improved Secondary Air Filter is Now Used on Certain F Series and F2 Series Backhoe Loaders {1051, 1054}
A Special Instruction, Managing Cylinder Block Pitting Near The Upper Line Seal In Certain 3500 Engines Is Now Available {1201, 1353, 135C, 1361, 1395} A Special Instruction, Managing Cylinder Block Pitting Near The Upper Line Seal In Certain 3500 Engines Is Now Available {1201, 1353, 135C, 1361, 1395}
16M3 and 18M3 Motor Graders Information Display Service Menu
950M, 962M, 966M, 972M, 980M, 982M, 950M Z and 962M Z Wheel Loaders Operator Controls
An Improved Indicator As is Now Used in Certain Backhoe Loaders {1408} An Improved Indicator As is Now Used in Certain Backhoe Loaders {1408}
14M3 Motor Grader Machine Systems Keypad Module - Remove and Install
3524B and C175 Engines for Off-Highway Truck/Tractors Fuel Transfer Pump
424B Backhoe Loader Transmission Oil Level - Check
14M3 Motor Grader Machine Systems Cab - Remove and Install
Product Link™ PL131, PL141, and PL161 Systems Change the Daily Report Time
Product Link™ PL131, PL141, and PL161 Systems Battery - Replace
Product Link™ PL131, PL141, and PL161 Systems Last Known Status in Vision Link Not Reporting
3512E Tier 4 Final Engines for 785G Off-Highway Trucks Cat ET Service Features
AP355F Asphalt Paver Machine Systems System Pressure - Release
AP300F Asphalt Paver Machine System General Information (Auxiliary Hydraulic System)
AP300F Asphalt Paver Machine System Operator Controls (Auxiliary Hydraulic System)
AP300F Asphalt Paver Machine System Gear Pump (Auxiliary)
AP300F Asphalt Paver Machine System Piston Pump (Auxiliary)
AP300F Asphalt Paver Machine System General Information (Auger and Conveyor System)
AP300F Asphalt Paver Machine System Operator Controls (Auger and Conveyor System)
AP300F Asphalt Paver Machine System Gear Motor (Auger)
AP300F Asphalt Paver Machine System Gear Motor (Conveyor)
AP300F Asphalt Paver Machine System Electrical Schematic (Auger and Conveyor System)
AP300F Asphalt Paver Machine System Hydraulic Schematic (Auger and Conveyor System)
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