ARM AS-SUSPENSION 8Y6012 - Caterpillar

Installation Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     111-5051     Wrench     1    
B     4C-6161     Tube Brush     1    
164-5927 Wire Brush     1    
9U-6102 Reamer     1    
C     164-5924     Injector Bore Gauge     1    
D     5P-3931     Anti-Seize Compound     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00337772
This is an example of a typical injector sleeve. (1) 120 degree angled surface of the injector sleeve. The lower O-ring seal on the injector contacts the injector sleeve in this area. (2) The injector tip fits in this bore in the injector sleeve.Cleanliness is essential to the proper sealing of the injector. All carbon deposits should be removed from the injector sleeve and the bore (2) . Carbon deposits should also be removed from the 120 degree angled surface (1) at the bottom of the injector sleeve.
Failure to properly clean any of the listed areas may cause an improper seal at the lower injector O-ring seal. This could result in tip damage or injector failure due to leakage of combustion gas into the fuel passage.
Use Tooling (B) to clean the carbon deposits from bore (2) of the injector sleeve.After the injector sleeve has been cleaned with Tooling (B) , use Tooling (C) to determine that an adequate amount of carbon has been removed. Refer to Disassembly and Assembly, "Unit Injector - Install".
Illustration 2 g00555510
Install new O-ring seals (2) and washer (3) on the unit injector sleeve (1) .
Lubricate O-ring seals (2) with clean engine oil.
Illustration 3 g00555505
Apply Tooling (D) to unit injector sleeve (1) . Install the unit injector sleeve in the cylinder head and tighten to a torque of 100 10 N m (74 7 lb ft) with Tooling (A) .
Fill the engine with coolant. Refer to Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities".End By:
Install the unit injector. Refer to Disassembly and Assembly, "Unit Injector - Install".
Install the rocker arm and shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Install".