955603 Volvo.Penta Hexagon screw

1. Remove the plug from location (1). Install tool (A) in the hole with the square end down. Move the governor control the "ON" position until the rack stops against tool (A). The racks are now in center (zero) position. 2. Disconnect lines (2) from the fuel injection pumps. Remove washers (3). Put caps on all fuel openings to keep dirt out of the fuel system.3. Remove bushing (4) with tool (B).
When injection pumps, spacers and lifters are removed from the injection pump housing, keep the parts of each pump together so they can be installed back in their original location.
4. Remove the fuel injection pump with tool (C).
Be careful when the injection pumps are disassembled. Do not cause damage to the surface on the plunger. The plunger and barrel for each pump are made as a set. Do not put the plunger of one pump in the barrel of another pump. If one has wear, install a complete new pump assembly. Be careful when the plunger is put into the bore of the barrel.
5. Disassemble the fuel injection pump. Remove ring (6). Make a separation of bonnet (5) from the plunger and barrel assembly (7).
Do not remove the gear from the plunger. The gear and plunger are assembled and adjusted at the factory.
6. Remove the plunger and gear segment, the washer and the spring from the barrel.7. Remove the ring, spring, collar and valve from the barrel. 8. Remove spacer (8) from the pump bore.Install Fuel Injection Pumps
Make sure the fuel racks are in the center (zero) position before the fuel injection pumps are installed. 1. Put plunger (10), washer (5) and spring (9) in position on barrel (4). Put check valve assembly (7), spring (3) and collar (8) in position in bonnet (6). Connect bonnet (6) and barrel (4) together with ring (2). Keep seal (1) with the bonnet for use at installation. 2. Put spacer (13) in position in the pump housing bore. Make sure the correct spacer is with each pump.3. Put the space in gear segment (11) in alignment with the groove in barrel (4). 4. Put the injection pump straight down into the housing bore so the space in gear segment (11) is in alignment with pin (12) and the groove in barrel (4) is in alignment with dowel (14). Use tool (C) to install the pump. 5. Install seal (1) and bushing (15) in the pump housing bore. If the pump is in the correct position, bushing (15) will turn into the threads of the pump housing with the fingers until it is even with the housing. Tighten bushing (15) to a torque of 203 14 N m (150 10 lb.ft.) with tool (B).6. Install washers (16).7. Connect the fuel lines to the injection pumps and tighten fuel line nuts to a torque of 40 7 N m (30 5 lb.ft.) with tool (D).8. Check for correct installation of the injection pumps with the engine stopped. See Installation Of Injection Pump in Testing And Adjustin.
If one or more of the injection pumps have been installed wrong, damage to the engine is possible if cautions are not taken when the engine is first started. Make preparation to close off the air intake to stop the engine if necessary.
9. Remove the timing pin [tool (A)] and install the plug in the injection pump housing.