PIN 4B6166 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Tap 7/8-9 NC 1
B 1A-5576 Bolt 1
8C-6913 Hard Washer 7
C 221-9803 Rubber Stopper 1
D 1P-0510 Driver Gp 1
E 4C-5552 Large Bore Brush 1
F 4C-9507 Retaining Compound 1 Start By:
Remove the unit injectors.
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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Drain the coolant from the cooling system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations".
Illustration 1 g02163825
Position Tooling (C) at the bottom of the unit injector sleeve (1).
Coat Tooling (A) (not shown) with clean grease. Use Tooling (A) to cut threads into unit injector sleeve (1).
Use Tooling (B) in order to remove unit injector sleeve (1). Discard the unit injector sleeve (1). Installation Procedure
Thoroughly clean the bores for the unit injectors with Tooling (E).
Illustration 2 g02164118
Apply clean engine oil to O-ring seals (2). Install O-ring seals (2) on unit injector sleeve (1).
Apply a thin coating of Tooling (F) around the outer circumference of unit injector sleeve (1) at Area (G).
Position unit injector sleeve (1) in the cylinder head. Use a hammer and Tooling (D) in order to install unit injector sleeve (1) in the cylinder head. Note: Allow Tooling (F) to cure for 2 hours at 21 °C (70 °F) before filling the engine with fuel or coolant. Longer curing time is required for lower temperatures.
Fill the cooling system with coolant to the correct level. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations". End By:
Install the unit injectors.