BODY 1U3518 - Caterpillar

Before removing the fuel injection pumps, clean the outer surface of the fuel injection pump housing.
1. Remove the bolts (1) that hold cover (2) in position. Remove the cover.2. Remove the spring from the bypass valve. Do not loosen screws (3) that hold the levers when removing or installing the fuel injection pumps. If the levers are moved, the fuel pump adjustment will be changed.3. Remove the fuel injection pumps with tool (A). The sleeve on the plunger will slide off the lever as the fuel injection pump is removed.Install Fuel Injection Pumps
1. Put the fuel injection pump in the bore of the fuel pump housing. Make sure the fuel injection pump (1) is clean and free of dirt and foreign material.2. The sleeve (2) will be engaged with the lever when installed correctly.
If the levers have been moved on the shaft, the fuel pump adjustment must be made. (See TESTING AND ADJUSTING).
3. Tighten the bushing on the fuel injection pump with tool (A) to a torque of 70 5 lb.ft. (9.7 0.7 mkg).4. Put the spring on the bypass valve. Install the cover on the fuel injection pump housing. Make sure the spring on the bypass valve is in position in the cover.Disassemble Fuel Injection Pumps (Later Model Sleeve Metering Fuel System)
start by: a) remove fuel injection pumps 1. Remove bushing (1) from bonnet (2).2. Remove ring (3) from the bonnet and barrel (7). Remove check valve (6) and spring (4) from the bonnet.3. Remove spring (8) and washer (5). Remove plunger (9) and sleeve (10). Keep the plunger and sleeve with their respective barrel for installation. Do not use plungers, sleeves, and barrels with other plungers, sleeves and barrels.Assemble Fuel Injection Pumps (Later Model Sleeve Metering Fuel System)
1. Install sleeve (4), plunger (5), spring (2) and washer (3) on barrel (1). Make sure the sleeve and plunger are installed in the original barrel, and the large hole in the plunger is up.2. Install check valve and spring in the bonnet. Connect the barrel and bonnet and install the ring. Install the bushing on the bonnet.end by: a) install fuel injection pumps