Diesel Exhaust Fluid Quality - Test
Note: Refer to Operation and Maintenance Manual, Fluid Recommendations - Diesel Exhaust Fluid for DEF handling and storage procedures
Show/hide table
Required Tools | ||
Qty | Part Number | Part Description |
1 | 431-7087 | Tool Gp (REFRACTOMETER (DEF)) |
1 | 162-5791 | Towel |
2 | 169-8373 | Fluid Sampling Bottle |
1 | 1U-5718 | Vacuum Pump |
1 | 4C-4600 | Container |
1 | 1U-7648 | Tube Cutter |
1 | 466-8796 | Test Strip |
Length as needed | 1U-8757 | Tube |
1 | 457-6144 | Tool As - Pliers |
- Clean the DEF tank of all debris prior to removal of any component. Contamination of the DEF can affect results of testing.
Show/hide table
Illustration 1 g03706721 (1) DEF tank fill cap
(2) DEF tank strainer - Remove fill cap (1) from the Diesel Exhaust Fluid (DEF) tank.
- Use Tool As - Pliers to press and release the tabs. Remove strainer (2) from the fill neck of the DEF tank.
Show/hide table
Illustration 2 g03706724 (3) Vacuum pump nut
(4) 1U-5718 Vacuum Pump
(5) 1U-8757 TubeNote: To ensure that the DEF sample is not contaminated during extraction, use a new piece of tube (5) every time this procedure is performed.
- Remove tube (5) from the plastic bag and install into vacuum pump (4).
- Loosen nut (3) to install the tube.
- Install the tube all the way through the cap of the vacuum pump as shown in Illustration 2.
- Tighten the nut on top of the vacuum pump down completely to prevent DEF leaks.
- Remove the fluid sampling bottle from the plastic. Remove the cap and install the fluid sampling bottle onto the vacuum pump.
Show/hide table
Illustration 3 g06185049 (5) DEF tank filler neck
(6) 1U-8757 TubeNote: The DEF sample must only be taken from the top level of fluid that is contained in the DEF tank. The top level of the DEF is where the contaminants will be located.
- Place the other end of tube (6) into the filler neck of DEF tank (5).
- Extract DEF from the top level of fluid in the tank using the vacuum pump. Fill the fluid sample bottle to the "Fill Line" that is on the bottle.
- Proceed to "Test Procedure For DEF Contamination" to begin contamination testing.
Test Procedure For DEF Contamination
- Place the test strip into the fluid sampling bottle for 5 seconds.
Show/hide table
Illustration 4 g03707382 (7) Negative test result
(8) Positive test result - Remove the test strip and look for discoloring as shown in Illustration 4. Any discoloring of the test strip indicates DEF contamination by an oil-based fluid. Contact the Dealer Solution Network for further information.
Note: If the test strips indicate no DEF contamination, proceed to "Test Procedure For DEF Concentration".
Test Procedure For DEF Concentration
- Follow the instructions included with the refractometer to calibrate the waterline of the meter.
- Clean the refractometer and apply two drops of Diesel Exhaust Fluid (DEF) collected from the DEF tank.
Show/hide table
Illustration 7 g03370573 Typical reading for DEF in good condition - Read the DEF quality in the refractometer. The DEF quality must measure between 29 and 35 percent. If the DEF does not meet specification, replace the DEF in the tank with new DEF. The new DEF must meet ISO 22241 standards.
Note: Dispose of the DEF removed as per local regulations.
Show/hide table
Illustration 5 | g03370564 |
431-7087 Tool Gp (REFRACTOMETER (DEF)) |
Show/hide table
Illustration 6 | g03370553 |
Calibration point for distilled water |
Caterpillar Information System:
323F SA Excavator and 323F MHPU Machine Systems Specifications
Improved Engine and Generator Base Assemblies Are Now Used on Certain G3512E and G3516H Generator Sets {7060} Improved Engine and Generator Base Assemblies Are Now Used on Certain G3512E and G3516H Generator Sets {7060}
New Machine Software for Cat® Product Link Is Now Available on Certain Cat® Products {7490, 7606, 7610, 7620} New Machine Software for Cat® Product Link Is Now Available on Certain Cat® Products {7490, 7606, 7610, 7620}
C175 Tier 4 Final Engines for Off-Highway Trucks Aftertreatment SCR System Dosing - Test
C175 Tier 4 Final Engines for Off-Highway Trucks ECM - Replace
C175 Tier 4 Final Engines for Off-Highway Trucks Speed/Timing - Test
320 GC, 320 and 323 Excavator Machine Systems Main Control Valve
3512B HD SR500 Generator Sets Safety Messages
120 and 120 AWD Motor Grader Window Washer Reservoir - Fill
EMCP4.3/4.4 Integrated Voltage Regulator Connections
3512C HD SR500 Generator Sets Product Description
EMCP4.3/4.4 Integrated Voltage Regulator
120 and 120 AWD Motor Grader Mirror - If Equipped
320 GC, 320 and 323 Excavator Bucket - Remove and Install
120 and 120 AWD Motor Grader Display and Camera - Clean - If Equipped
G3516 TA Engine Speed Control - Test
Fuel Injection Pump on Certain C4.4 and C7.1 Generator Sets {1251, 1290} Fuel Injection Pump on Certain C4.4 and C7.1 Generator Sets {1251, 1290}
323F SA and 323F LN Excavator and 323F LN MHPU Machine Systems Specifications Boom Cylinder Lines
120 and 120 AWD Motor Grader Fuses - Replace
3512B HD SR500 Generator Sets Model View Illustrations
CX38-P892 Well Servicing Transmission Modulating Valve (Torque Converter Lockup Clutch)
320GC, 320 and 323 Excavators Machine Systems Main Control Valve - Assemble
3512B HD SR500 Generator Sets Plate Locations and Film Locations
Procedure to Upgrade EMCP 1, EMCP 2, EMCP 2+, EMCP 3.1, EMCP 3.2, and EMCP 3.3 to EMCP 4.2B {1408, 4490, 7418, 7426, 7451} Procedure to Upgrade EMCP 1, EMCP 2, EMCP 2+, EMCP 3.1, EMCP 3.2, and EMCP 3.3 to EMCP 4.2B {1408, 4490, 7418, 7426, 7451}