90202-ZY1-000 Honda NUT, SPECIAL (16MM) (Honda Code 7215387).

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 adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.Table 1 contains the new diagnostic codes and responses to those codes for this software release.
Table 1
Diagnostic Code Code Description Response
99-0 Engine Oil Filter Differential Pressure : High - most severe (3) Diagnose the issue using the Troubleshooting manual.
1684-12 Fuel Injection Pump : Failure Replace the high-pressure fuel pump. The codes listed in Table 2 are related to the operation of the high-pressure fuel pump and may indicate a problem with the system. If any of the following codes become active, use the "Response" column for a resolution.
Table 2
Diagnostic Code Code Description Response
99-15 Engine Oil Filter Differential Pressure : High - least severe (1) Change oil filters immediately.
99-16 Engine Oil Filter Differential Pressure : High - moderate severity (2)
100-17 Engine Oil Pressure : Low - least severe (1) Diagnose the issue using the Troubleshooting manual.
100-1 Engine Oil Pressure : Low - most severe (3)
107-15 Engine Air Filter 1 Differential Pressure : High - least severe (1) Change the air filters as soon as possible.
107-16 Engine Air Filter 1 Differential Pressure : High - moderate severity (2)
110-15 Engine Coolant Temperature : High - least severe (1) Diagnose the issue using the Troubleshooting manual.
110-16 Engine Coolant Temperature : High - moderate severity (2)
110-0 Engine Coolant Temperature : High - most severe (3)
1382-15 Engine Fuel Filter (suction side) Differential Pressure : High - least severe (1) Replace the primary fuel filters immediately.
1382-16 Engine Fuel Filter (suction side) Differential Pressure : High - moderate severity (2) If a high-pressure fuel pump fails, change the oil filters and oil after replacement.Note: Use only Caterpillar® Filters or filters that meet Caterpillar filter specifications and do not contain an internal bypass.Note: Do not attempt to disassemble the high-pressure fuel pump to diagnose failures or attempt to repair the pump. These actions should be done by qualified individuals.The table below contains the part numbers for this change.
Table 3
Part Number Part Name Qty
443-9875 Thrust Washer 2
451-1493 O-Ring Seal 1
493-0525 Filter Screen As 1
574-0991 Fuel Pump Gp 1
584-9071 Software Gp N/A
6V-5553 O-Ring Seal 1 The new software is available in the form of a flashfile through the Caterpillar Service Information System (SIS). A newer part number may be available. SIS Web only displays the latest available flashfile.High-Pressure Fuel Pump Bottom End Inspection Procedure
Required Tooling
Table 4
Required Tooling
Item Number Part Number Part Name Qty
T1 448-0724 Tool Gp 1
T2 N/A Torque Wrench (capable of 27 N m (20 lb ft)) 1
T3 N/A 6mm Allen Hex Bit 1 Procedure
Illustration 1 g06424159
(1) Side access plugs
With the engine off, remove side access plugs (1) from the high-pressure fuel pump. Retain the plugs for reinstallation.Note: A small amount of oil may come out of the side access ports. Ensure that the o-ring seal does not stick to the pump housing and are on the plugs during removal.
Use a flashlight to visually inspect the surface of the first camshaft lobe closest to the front of the engine. Examine the surface of the lobe surface for texture and appearance. Use the following sections below to determine the state of the high-pressure fuel pump: Camshaft Condition : Acceptable, Camshaft Condition : Monitor, and Camshaft Condition : Failure of the High-Pressure Fuel Pump.
If any of the lobe surfaces are in question, use tool group (T1) to inspect the lobe. Take pictures with the bore scope of any camshaft lobe in question. Enter a Dealer Solution Network (DSN) ticket attach the photos to the ticket.Note: Do not insert the scope far enough to contact the camshaft of the pump as this can cause damage.
Repeat the inspection for the remaining 3 camshaft lobes.
If all 4 camshaft lobes are acceptable, turn the engine over 120 degrees then reinspect the lobes again. Repeat this process until a