VALVE AS 4740558 - Caterpillar

Start By:
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove".
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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Be sure to mark the orientation of each of the gears for installation purposes.
Illustration 1 g01010064
Remove bolts (1) and thrust plate (2) .
Illustration 2 g00576209
Remove seal assembly (3) and adapter (4) .
Illustration 3 g00576240
Remove O-ring seals (5) and (6) from seal assembly (3) .
Illustration 4 g01010047
Remove bolts (9), plate (10), and adjustable idler gear (8) .
Illustration 5 g01010027
Check the condition of bearing (7) in adjustable idler gear (8). If bearing (7) is worn or damaged, use a new part for replacement. Use Tooling (A) to replace bearing (7) in adjustable idler gear (8) .
Illustration 6 g00576203
Remove bolts (12), plate (13), and idler gear (11) .
Illustration 7 g00576204
Check the condition of bearing (14) in idler gear (11). If bearing (14) is worn or damaged, use a new part for replacement. Use Tooling (A) to replace bearing (14) in idler gear (11) .
Illustration 8 g01010048
Remove bolts (17), plate (18), and cluster gear (16) .
Illustration 9 g01010028
Check the condition of bearing (15) in cluster gear (16). If bearing (15) is worn or damaged, use a new part for replacement. Use Tooling (A) to replace bearing (15) in cluster gear (16) .
Illustration 10 g00576208
Note: Shaft assemblies (19) and (20) must be removed in order to remove plate (23) .
Check the condition of shaft assembly (19). If the bearing diameter of the shaft is worn or damaged, remove the nuts and the bolt and replace shaft assembly (19) with a new part.
Check the condition of shaft assembly (20). If the bearing diameter of the shaft is worn or damaged, remove the nuts and the bolt and replace shaft assembly (20) with a new part.
Check the condition of shaft (21). If the bearing diameter of the shaft is worn or damaged, remove bolts (22) and replace shaft (21) with a new part.
Remove bolts (24) that hold plate (23) to the cylinder block. Remove plate (23) .
Illustration 11 g00618962
Remove gasket (25) from the cylinder block.