- Mobile Hydraulic Power Unit:
- 336E MHPU (S/N: RBS1-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
- HP Mode
Creating an Electronic Copy
Use the following procedure to create an editable electronic copy from SIS Web.
- Click format to print.
- Save the document as an HTML format.
- Open the document with Microsoft Word.
Electrical System
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) |
( 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
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Radiator Pressure Relief (Radiator Cap) (2)     | NA     |     | Refer to System Operation Testing and Adjusting.     |
    | Freezing Point of Engine Coolant     | NA     |     | Refer to Operation and Maintenance Manual.     |
    | Conditioner Test of Engine Coolant     | NA     |     | Refer to Operation and Maintenance Manual.     |
    | Difference between the Upper and Lower Radiator Tank Temperatures     | NA     |     |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
( 2 ) | Test for the pressure that is listed on the cap. |
Fuel System
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Fuel Pressure of the Fuel System at High Idle Speed     | 593 kPa (86 psi) to 951 kPa (138 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Lubrication System
Status (1)     | Description     | Specification     | Actual     | Comments     |
Oil Pressure at Maximum Engine Speed | 248 kPa (36 psi) to 600 kPa (87 psi)     |
    |     | |
    | Oil Pressure at Low Idle     | 103 kPa (15 psi) 400 kPa (58 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Basic Engine
Status (1)     | Description     | Specification     | Actual     | Comments     | ||
New | Rebuild | Service Limit     | ||||
    | Engine Performance - Test (Engine Speed)     |     | ||||
    | No Load High Idle AEC OFF 0 to 3 seconds     |
1800 ± 50 rpm     | 1800 + 50 - 200 rpm     |     |     | |
    | No Load High Idle AEC OFF > 3 seconds     |
1700 ± 50 rpm     | 1700 + 50 - 200 rpm     |
    |     | |
    | No Load High Idle AEC ON     |
950 ± 50 rpm     | 950 ± 50 rpm     |     |     | |
    | No Load Low Idle AEC OFF     |
950 ± 50 rpm     | 950 ± 50 rpm     |     |     | |
    | Maximum Speed with Load Pump stall condition     |
1800 ± 50 rpm     | ≥ 1600 rpm     |     |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Air Inlet and Exhaust System
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)     |     |     |     |
    | Cylinder # 7 Exhaust Temperature (2)     |     |     |     |
    | Cylinder # 8 Exhaust Temperature (2)     |     |     |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
( 2 ) | Compare the exhaust temperature variance at each exhaust port. |
Performance Checks
ReferenceRefer to Testing & Adjusting, KENR7985, "Performance Tests" for more detail on the following test.
Operation Checks
Travel on Level Ground - Test
Travel on Level Ground - Test     | ||||||
---|---|---|---|---|---|---|
Travel Time for 25 m (82 ft) (time in seconds) (1)     |
||||||
Status (2)     | Description     | New     | Rebuild     | Service Limit     | Actual     | Comments     |
    | High Forward     | 16.0 or less     | 18.4 or less     | 20.8 or less     |     |     |
    | High Reverse     | |||||
    | Low Forward     | 24.5 or less     | 28.2 or less     | 31.9 or less     |     |     |
    | Low Reverse     | |||||
Travel Deviation - Check     | ||||||
    | High Forward     | 800 mm (31.5 inch) or less     |
1200 mm (47.2 inch) or less     |
1500 mm (59.1 inch) or less     |
    |     |
    | High Reverse     | |||||
    | Low Forward     | 800 mm (31.5 inch) or less     |
1200 mm (47.2 inch) or less     |
1500 mm (59.1 inch) or less     |
    |     |
    | Low Reverse     |
( 1 ) | First 5 m (16.4 ft) is preliminary. Measure travel time for remaining 20 m (65.6 ft). |
( 2 ) | N = Normal, M = Monitor, A = Action |
Travel on Level Ground - Test (Optional Test)
Travel on Level Ground - Test (Optional Test)     | |||||||
---|---|---|---|---|---|---|---|
Time For Three Revolutions (time in seconds)     | |||||||
Status (1)     | Description     | New     | Rebuild     | Service Limit     | Actual     | Comments     | |
Right | Left | ||||||
Standard Undercarriage     | |||||||
    | High Forward     | 22.5 or less     | 25.9 or less     | 29.3 or less     |     |     |     |
    | High Reverse     | ||||||
    | Low Forward     | 35.2 or less     | 40.0 or less     | 45.7 or less     |     |     |     |
    | Low Reverse     | ||||||
Long Undercarriage     | |||||||
    | High Forward     | 24.5 or less     | 28.2 or less     | 31.9 or less     |     |     |     |
    | High Reverse     | ||||||
    | Low Forward     | 38.3 or less     | 44.0 or less     | 49.8 or less     |     |     |     |
    | Low Reverse     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Machine Drift on a Slope - Check
Machine Drift on a Slope - Check     | ||||||
---|---|---|---|---|---|---|
Status (2)     | Description     | New     | Rebuild     | Service Limit     | Actual     | Comments     |
    | Machine Drift     | 0     | 0     | 0     |     |     |
( 2 ) | N = Normal, M = Monitor, A = Action |
Swing Speed and Overswing on Level Ground - Check
Swing Speed and Overswing on Level Ground - Check     | ||||||
---|---|---|---|---|---|---|
Status (2)     | Description     | New     | Rebuild     | Service Limit     | Actual     | Comments     |
Swing Acceleration on Level Ground (seconds) (1)     | ||||||
    | Right Swing     | 4.9 or less     | 5.4 or less     | 6.0 or less     |     |     |
    | Left Swing     | |||||
Overswing mm (inch)     | ||||||
    | Right Swing     | 1300 mm (51.2 inch) or less     |
1400 mm (55.1 inch) or less     |
1600 mm (63.0 inch) or less     |
    |     |
    | Left Swing     |
( 2 ) | N = Normal, M = Monitor, A = Action |
( 1 ) | Specification for 180 degree swing |
Swing Speed and Swing Drift on a Slope - Check
Swing Speed and Swing Drift on a Slope - Check     | ||||||
---|---|---|---|---|---|---|
Status (2)     | Description     | New     | Rebuild     | Service Limit     | Actual     | Comments     |
Swing Speed on a Slope (90 degree swing) (seconds)     | ||||||
    | Right Swing     | 5.2 or less     | 5.7 or less     | 6.3 or less     |     |     |
    | Left Swing     | |||||
Swing Drift mm (inch)     | ||||||
    | Right Swing     | 0     | 0     | 0     |     |     |
    | Left Swing     |
( 2 ) | N = Normal, M = Monitor, A = Action |
Hydraulic System
ReferenceRefer to Testing & Adjusting, KENR7985 for more detail on the following tests.
Relief Valve (Pilot) - Test and Adjust
Relief Valve (Pilot) - Test and Adjust     | ||||
---|---|---|---|---|
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Relief Valve (Pilot)     | 4100 ± 200 kPa (595 ± 29 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Accumulator (Pilot) - Test
Accumulator (Pilot) - Test     | ||||
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Pilot Accumulator     | 1035 kPa (150 psi)     |
    | Should stay above 1035 kPa (150 psi) for 20 seconds     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Main) - Test
Relief Valve (Main) - Test and Adjust     | ||||
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Main Relief Valve     | 35000 ± 500 kPa (5076 ± 73 psi)     |
    |     |
    | Heavy Lift (If Equipped)     |
38000 ± 500 kPa (5512 ± 73 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Line) - Test
Relief Valve (Line) - Test and Adjust     | ||||
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Boom Head End     | 40000 ± 500 kPa (5802 ± 73 psi)     |
    |     |
    | Boom Rod End     | 37000 ± 500 kPa (5366 ± 73 psi)     |
    |     |
    | Stick Head End     | 37000 ± 500 kPa (5366 ± 73 psi)     |
    |     |
    | Stick Rod End     | 40000 ± 500 kPa (5802 ± 73 psi)     |
    |     |
    | Bucket Head End     | 37000 ± 500 kPa (5366 ± 73 psi)     |
    |     |
    | Bucket Rod End     | 37000 ± 500 kPa (5366 ± 73 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Swing) - Test and Adjust
Relief Valve (Swing) - Test and Adjust     | ||||
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Swing Relief Valve (Left Swing)     |
31400 ± 1000 kPa (4554 ± 145 psi)     |
    |     |
    | Swing Relief Valve (Right Swing)     |
31400 ± 1000 kPa (4554 ± 145 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
Relief Valve (Crossover) - Test
Relief Valve (Crossover) - Test and Adjust     | ||||
Status (1)     | Description     | Specification     | Actual     | Comments     |
    | Forward Left Travel     | 37500 ± 500 kPa (5439 ± 73 psi)     |
    |     |
    | Reverse Left Travel     | 37500 ± 500 kPa (5439 ± 73 psi)     |
    |     |
    | Forward Right Travel     | 37500 ± 500 kPa (5439 ± 73 psi)     |
    |     |
    | Reverse Right Travel     | 37500 ± 500 kPa (5439 ± 73 psi)     |
    |     |
( 1 ) | N = Normal, M = Monitor, A = Action |
S.O.S
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     |     |     |
( 1 ) | N = Normal, M = Monitor, A = Action |