ENGINE AR-COMPLETE 2484635 - Caterpillar

From the Table 1, select brushes (4) that exceeds the cylinder bore size by no more than 50 mm (2.0 inch). If a desired brush size is not available, use shears or a utility knife to trim the bristles on a larger brush to fit the inside diameter of the cylinder tube.
Assemble six brushes (4) onto brush head (3a) using retaining rings (3c) at both ends.Note: If the brushes do not slide easily into the slotted head, check to see if slots are tapered.
Make sure six nozzles (3b) are screwed tightly into the brush head.
Thread the assembled brush head onto one of the listed arbor tubes (5) .Note: If desired, the length of the arbor can be shortened and rethreaded for a specific cylinder tube application.
Illustration 7 g02637600
Arbor And Union Assembly Nomenclature. (2a) Pipe Coupling. (2b) Union. (2c) Pipe. (2d) ON/OFF Valve. (2e) Quick-Disconnect Coupling. (2f) Quick-Disconnect Nipple. (5) Arbor Tube. (6) Pneumatic Drill.
Thread the other end of arbor tube (5) into pipe coupling (2a) .
Thread the assembled arbor onto the male pipe adapter on union (2b) .
Assemble the short length of pipe (2c), the ON/OFF Valve (2d), and the Quick-Disconnect Nipple/Coupling (2e), (2f) into the union assembly.
Select a drive motor to rotate the brush head, such as a 171-5688 Pneumatic Drill . This drill is an extra heavy-duty, variable speed unit with a 13 mm (.5 inch) Jacobs® chuck. It runs at 500 rpm using a ? hp high-torque motor. Many other types of air drills will work equally as well in this application.If Using Hand Brushes
If optional hand brushes are used to clean a cylinder bore, a 135-7643 Nozzle Adapter (1) is required to attach the brushes to the arbor tube. The nozzle adapter installs in place of the 120-9146 Brush Assembly . Select the appropriately sized brush, based on the cylinder bore size, from the chart below. When using this method, set the pressure regulator between 68 and 103 kPa (10 and15 psi) (do not run at higher pressures).Note: The diameter of a hand brush should not exceed the bore diameter of the cylinder by more than 50 mm (2.0 inch).
Table 2
Hand Brushes for Cylinder Cleaning    
Part No.     Maximum Diameter    
4C-6342    
88 mm (3.5 inch)    
4C-6343    
101 mm (4.0 inch)    
1U-7429    
114 mm (4.5 inch)    
1U-9788    
127 mm (5.0 inch)    
4C-6344    
140 mm (5.5 inch)    
4C-6345    
152 mm (6.0 inch)    
4C-6346    
165 mm (6.5 inch)    
4C-6347    
178 mm (7.0 inch)    
4C-6348    
190 mm (7.5 inch)    
4C-6349    
203 mm (8.0 inch)    
4C-6350    
241 mm (9.5 inch)    
Illustration 8 g02637602
To use the 135-7643 Nozzle Adapter , cut the twisted wire handle off of bottle brush (2). Allow approximately 50 mm (2.0 inch) of wire handle to remain.
Slide the twisted wire handle into nozzle adapter (1) .
Use two 4B-9808 Setscrews (3) [1/4-20 x 12 mm (.5 in) long] to hold the brush