HOSE AS 4388764 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     1P-2322     Combination Puller     1    
B     8T-6854     Bolt     2    Start By:
Remove the gear pump for the power train. Refer to Disassembly and Assembly, "Gear Pump (Power Train) - Remove".Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal components.
Illustration 1 g00605690
Remove locknut (1) and the hard washer.
Illustration 2 g00605691
Install Tooling (A) in order to remove oil pump drive gear (2). Remove oil pump drive gear (2) and the woodruff key.
Illustration 3 g00605692
Remove six bolts (3) and the washers.
Illustration 4 g00605693
Install Tooling (B), as shown.Note: Tooling (B) must be modified in order to be used as a guide bolt. Position Tooling (B) in a suitable vise. Remove the head of the bolt in order to use Tooling (B) as a guide bolt.
Remove pump cover assembly (4) and the O-ring seal.
Remove oil pump body assembly (5), the O-ring seal, and the four dowels.
Illustration 5 g00604982
Inspect two bearings (6) for wear or damage.Note: If two bearings (6) need to be replaced, score the bearings with a small saw. Be careful not to cut into the bore of pump cover assembly (4). Remove the bearings from pump cover assembly (4). Be careful not to damage or change the dimension of the bore.
Illustration 6 g00605694
Remove pump manifold assembly (7) and the O-ring seal from oil pump body assembly (8) .
Illustration 7 g00604937
Inspect two bearings (9) for wear or damage.Note: If two bearings (9) need to be replaced, score the bearings with a small saw. Be careful not to cut into the bore of pump manifold assembly (7). Remove the bearings from pump manifold assembly (7). Be careful not to damage or change the dimension of the bore.
Illustration 8 g00605695
Remove oil pump gear (11) and the woodruff key from oil pump body assembly (8) .
Remove oil pump gear (12) from oil pump body assembly (8) .
Remove two dowels (10) from oil pump body assembly (8) .
Illustration 9 g00605696
Remove oil pump gear (13) from oil pump body assembly (8) .
Remove oil pump gear (14) from oil pump body assembly (8) .
Illustration 10 g00605080
Inspect two bearings (15) for wear or damage.Note: If two bearings (15) need to be replaced, score the bearings with a small saw. Be careful not to cut into the bore of oil pump body assembly (8). Remove the bearings from oil pump body assembly (8). Be careful not to damage or change the dimension of the bore.