3598845 HOSE AS Caterpillar parts HOSE
Alternative (cross code) number:
The 207-5248 Injector Rock Arms used in some C18 Marine Engine applications have been found to crack and break through the adjusting screw threads at the nose of the arm.
Model Identification Number
C18 CKH00359, 426, 741, 744-745, 748-749, 1542-1543, 1594, 1641-1642, 1763-1764, 1805, 2053
Part Number Description
6 10R4704 ARM AS-UI ROCKER
Refer to attached Rework Procedure.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-24 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 4.0-hour job
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
For the following units listed remove (6) 207-5248 Injector Rocker Arms, and replace with (6) 10R4704 Injector Rocker Arms.
For proper Disassembly & Assembly instructions of the injector rocker arms please refer to the following Publications in SIS Web. (SENR9832 Testing & Adjusting - Finding Top Dead Center Position for No. 1 Piston), (SENR9832 Testing & Adjusting - Electronic Unit Injector Adjusting & Setting), and (SENR9832 Testing & Adjusting - Engine Valve Lash Inspect/Adjust).
Note: It is important that while installing the 10R4704 Injector Rocker Arms, that the engine is in the proper position (Top Dead Center and 180 degrees out) so the Injector Rocker Arms are properly adjusted and set. It is also important that during the installation of the Injector Rocker Arms that the Exhaust Valve, and Intake Valve lash settings be inspected and if needed reset to factory specifications.
Note: During the rework process please inspect the 6I-0901 Rocker Arm Shafts for any signs of misalignment of the stud mounting holes, wear, damage, fretting etc. If damage is found to the shaft or if fretting or damage is found with any of the through bolt/stud mounting holes, the shaft is to be replaced, and reported against this service letter as contingent damage.