0434069 JOHNSON CARBURETOR ASSY.

Table 1
Required Tools
Tool Part Number Part Description Qty
B 8T-3034 Water Pump Seal Driver 1
C 5P-3975 Rubber Lubricant -
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.
Use steel wool to remove the deposits and the corrosion from the shaft.
Do not use sandpaper that will leave visible scratches on the pump shaft.
Inspect the area of the shaft that contacts the carbon seal rubber. Replace the shaft only if one of the following conditions exist in this area: pitting, corrosion and scoring. These conditions can provide a path for the leakage of coolant between the rubber and the pump shaft. If the shaft is polished in this area, this polishing indicates that the carbon seal assembly was spinning on the shaft. Use a fine grit sandpaper on the polished area before you install the new seal assembly.
Illustration 1 g01206688
Illustration 2 g06215659
Dimension (X) is 22.5 0.5 mm (0.89 0.02 inch).
Note: Clean water or P-80 lubricant is permitted for use as a lubricant for assistance at installation. Do not damage or put hands on the wear surface of the carbon ring or the ceramic ring. Install the ceramic ring with the smoothest face of the ring toward the carbon seal assembly.
Install the ceramic seal face of seal group (10) into the pump housing.
Place the carbon seal of seal group (10) onto the shaft. Use Tooling (B) and hand pressure to push the carbon seal until the face of the carbon seal contacts the ceramic seal face.
Measure Dimension (X) for bellows height as shown in Illustration 2. If Dimension (X) is too higher than the specified value, then press again with Tooling (B). If Dimension (X) is too lower than the specified value, then check the ceramic seal face of seal group (10) for damage and also check whether the ceramic seal face is fully seated or not.
Install the washer and the spring of seal group (10) onto the shaft.
Position impeller (7) on the shaft and install washer (6) and bolt (5).
Tighten bolt (5) to a torque of 360 50 N m (270 37 lb ft). Hit the head of the bolt with a hammer and tighten the bolt again. Repeat this procedure until there is no change in the bolt torque.
Lubricate the bore of O-ring seal (8) with Tooling (C). Install a new O-ring seal (8) on the housing.Note: Ensure that housing (4) is properly oriented when the housing is installed on the water pump.
Install housing (4) and bolts (9) on the water pump.
Illustration 3 g00605429
Install the coupling and flange (3).
Install elbow (1). Connect elbow (1) to the tube and water pump (2).
Fill the cooling system with coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".