SOFTWARE GP- 3550351 - Caterpillar

Machine Preparations
Park machine on a flat level surface capable of supporting machine weight.
Raise the lift arms and engage the lift arm brace.
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Remove the existing HVAC fresh air intake cover (A) and filter (B). Discard the cover and retain the filter.
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Inspect the cab strut lock pin orientation. The open end of the lock pin must face towards the front of the machine and away from the fresh air intake. If the lock pin is facing the opposite direction, reverse the orientation of the pin. Reorientating the lock pin will pose less potential for injury during filter replacement.Installation Procedure
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Install the fresh air filter (B) into the air intake. Install the 388-7907 Cover As (4) over the filter in place of the intake cover (A) removed in Step 3.Ensure the tabs of the bracket on the Cover As (4) are inserted into the slots on the A/C plenum bracket (C). Push the cover assembly down towards the ground. Ensure that the detents in the bracket are locked in place Note: Pay special attention to the lower tab on the bracket to ensure proper engagement with the A/C plenum bracket (C). Failure to engage the lower tab could result in decreased filter life, and loss of the Cover As (4) during machine operation. Dealers should instruct customers on the proper filter replacement procedure after the A/C Breather Kit has been installed.Note: Clean and/or replace the fresh air filter as needed prior to reassembly.
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Install the 388-7905 Hose (3) onto the 388-7907 Cover As (4) .
Install the 388-7902 Tube As (2) into the 388-7905 Hose (3) .
Install the 348-3485 Dust Valve (1) onto the bottom of the 388-7902 Tube As (2)
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Hold the 388-7902 Tube As (2) in place against the 345-4953 Plate (C) and locate the correct placement for the 172-8591 Spring Nuts (5). Install the Spring Nuts onto the mesh of the cab enclosure. Ensure that the threaded portion of the nut is on the back side of the mesh of the cab enclosure.
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Using three of the 9C-5344 Spacers (7) and three of the 198-9707 Screws (6), secure the 388-7902 Tube As (2) to the cab enclosure. Place the Spacers between the Tube As and the enclosure. Note: Apply a thread locker such as Loctite ® to the screws prior to installation.Note: Top two screws mount in the bottom locations (F) for 2012 models and in the top locations (E) for 2013 and later models. Refer to Illustrations 6, 7, and 8.
Lower lift arms. Check machine operation. Return machine to service.
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(D) Cable tie (sourced by dealer)
Secure the radio antenna (if equipped) to the snorkel with a cable tie (D). Refer to Illustration 9.Appendix
Raising the Cab
After the Breather Kit has been installed, the 388-7907 Cover As (4) must be removed prior to lifting the Cab. Failure to remove the Cover As will result in damage to the Cover As .Note: