BOLT 8T0358 - Caterpillar

Required Tools
Table 1
Required Tools
Part Number Part Name Qty
360-0774(1) Refractometer (Brix) 1
431-7087(2) Tool Gp (Refractometer (DEF)) 1
(1) The 360-0774 Refractometer (Brix) measures DEF from 0 percent to 55 percent..
(2) The 431-7087 Tool Gp (Refractometer (DEF)) measures DEF from 15 percent to 40 percent.Test Procedure
431-7087 Tool Gp (Refractometer (DEF))
Illustration 1 g03748157
431-7087 Tool Gp (Refractometer (DEF))
Illustration 2 g03748158
Calibration point for distilled water
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.
Illustration 3 g03748161
Typical reading for DEF in good condition
Read the DEF quality in the refractometer. The DEF quality must measure between 32 percent and 40 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.360-0774 Refractometer (Brix)
Illustration 4 g03746338
360-0774 Refractometer (Brix)
Clean the refractometer and apply two drops of Diesel Exhaust Fluid (DEF) collected from the DEF tank.
Read the DEF quality in the refractometer. The DEF quality must measure between 26 percent to 51 percent DEF (25 percent to 49 percent Brix). 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.