ARM AR-LIFT 3894677 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 367-3070 Fuel Injector Installer and Removal Tooling 2 Start By:
Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install".
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.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Remove the plug at the rear of the cylinder head. Allow the engine oil to drain from the hole in the cylinder head before the unit injector is removed.
Illustration 1 g01148880
Use a small flat head screwdriver to disconnect harness assembly (2) from unit injector (1).
Remove socket head bolts (3).
Illustration 2 g03030620
Install Tooling (A). Use Tooling (A) to remove unit injector (1) from the cylinder head. Note: Do not use a wire brush on the tip of the unit injector. Damage to the unit injector will occur.
Illustration 3 g01137291
Remove O-ring seals (6), (7), and (8) from unit injector (1). Remove backup rings (4), (5), and (9) from unit injector (1).