156884-9300 ZEXEL 9 423 612 604 BOSCH COMPRESSION SPRING 9423612604 1568849300 1157480010

Table 1
Revision Summary of Changes
01 Updated the effectivity. A new Diesel Exhaust Fluid (DEF) filter is now available on machines listed above. The DEF filter has an improved filter efficiency.
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
The following changes are now available for the products within the listed serial numbers.Refer to Table 2 for a list of a new and former part numbers.
Table 2
Required Parts
DEF Filter DEF Manifold Group
Application New Part Number Part Name Former Part Number (1) New Part Number Part Name Former Part Number (1)
785G 584-8139 DEF Filter 453-1607 585-3956 DEF Manifold Gp 480-4090
789G, 793F, 794AC, 797F, and 994K 584-8140 DEF Filter 453-1608 585-3957 DEF Manifold Gp 480-4091
(1) The former part number listed is for reference only and may differ.Note: The new DEF manifold group part numbers listed in Table 2 will be assembled with the new filters.
Illustration 1 g06570567
DEF manifold
(1) ClampAn additional change, beyond the new DEF filter, was made to the 585-3957 DEF Manifold Gp. The clamp in the location highlighted in Illustration 2 was removed to eliminate a potential wear point.
Illustration 2 g06570636
Typical view of the DEF manifold group
(2) DEF manifold
(3) DEF filterThis change is effective for the Pump Electronic Tank Unit (PETU) serial numbers listed in Table 3.
Table 3
Pump Electronic Tank Unit (PETU) Serial Numbers
S/N:PET001414J
S/N:PET001444J-UP