HOSE AS 3084073 - Caterpillar

The 8H-8559 Extension Assembly must be modified to fit into the variable speed drill. Use the following information in order to modify the extension.
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Modified 8H-8559 Extension Assembly
Table 4
Modification Dimensions    
Description    Dimension    
A     127 mm (5 inch)    
B    
50 mm (2 inch)    
C    
38 mm (1.5 inch)    
D    
12.7 mm (0.5 inch)    
F     Three Flats that are Equally Spaced    Repair Procedure
The reaming operation is a three step process. Use the following steps in order to ream the hole.
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Reaming the damaged bolt hole
Insert the 178-2349 Reamer into the damaged bolt hole in order to perform the first reaming operation.
Using the modified 8H-8559 Extension Assembly between the variable speed drill and the reamer, begin reaming the damaged bolt hole. Stop reaming after a depth of approximately 25.4 mm (1 inch) has been reached.
Remove the reamer and clean out the metal shavings. Continue reaming until the bottom of the damaged bolt hole is reached. Remove the reamer and clean out all of the metal shavings.
Repeat Steps 1 through 3 by using the 178-2350 Reamer in order to perform the second reaming operation.
Repeat Steps 1 through 3 by using the 178-2351 Reamer in order to perform the third reaming operation.The tapping procedure is a two-step process. Use the following steps in order to tap the hole.
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Tapping the hole
Using the 178-2353 Tap , perform the first tapping operation. Use a lubricating oil or tapping fluid.
Remove the tap from the cylinder block. Clean the hole thoroughly using compressed air.
Repeat Steps 1 through 2 by using the 178-2356 Tap .
Clean the hole by using the 138-8441 Brake Cleaner and compressed air.
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Thread the 178-2467 Insert Installation Sleeve onto a 167-8083 Bolt , hex end first. Install the sleeve completely onto the threads, then back the sleeve off for approximately 1/4 to 1/2 of a turn.
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Sleeve and threaded insert installed on bolt
Screw a 178-2501 Threaded Insert onto the same main bearing bolt until the insert contacts the sleeve. Snug the insert against the sleeve. Clean the outside diameter threads of the insert with 169-5464 Quick Cure Primer . Let dry, then coat outside diameter of insert with 154-9731 Thread Lock Compound .
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(1) Main Bearing Bolt (2) Installation Sleeve (3) Threaded Insert
Use a wrench in order to hold the installation sleeve and screw the threaded insert into the block all of the way. Then, tighten the installation sleeve an additional 1/2 of a HEX flat.
Use a wrench in order to hold the main cap bolt and then loosen the installation sleeve from the threaded insert. Then, remove the main cap bolt. Use a file in order to remove any burrs or high spots from the block-to-main cap mating face.