994H Wheel Loader Power Train Caterpillar


Pump Drive (Front) - Disassemble

Usage:

994H DWC

Disassembly Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-0510     Driver Group     1    
B     6B-6682     Full Nut     2    
1U-9895 Crossblock     1    
3H-0465 Push-Puller Plate     4    
5F-7369 Puller Leg     2    
4C-5653 Threaded Adapter     2    
5F-7345 Screw     1    
6B-6683 Nut     1    
8T-4122 Hard Washer     1    
5P-7311 Puller Assembly     1    
C     1P-0520     Driver Group     1    
D     138-7573     Link Bracket     2    
E     8S-6586     Forcing Screw     1    
1P-5546 Crossarm     1    
6B-6682 Full Nut     2    
3H-0465 Push-Puller Plate     4    
5F-7369 Puller Leg     2    
8B-7551 Bearing Puller Gp     1    
1P-0510 Driver Gp     1    
F     1P-1861     Retaining Ring Pliers     1    

Start By:

  1. Remove the pump drive. Refer to Disassembly and Assembly, "Pump Drive (Front) - Remove".



    Illustration 1g02596176

  1. Position pump drive (1) onto suitable blocking. The weight of pump drive (1) is approximately 318 kg (700 lb).

  1. Remove all tube assemblies (2). Remove bolts (3) and manifold (4) .



    Illustration 2g01355437

  1. Remove bolts (5), retainer (6), O-ring seal (7), and yoke (8) .



    Illustration 3g01355452

  1. Remove bolts (9). Use two of bolts (9) as forcing bolts in order to remove bearing cage (10) .



    Illustration 4g01355465

  1. Remove bearing cage (10) and shims (12). Remove O-ring seal (11) from bearing cage (10).



    Illustration 5g01355491

  1. Use Tooling (A) in order to remove bushing (13) and the dowel.



    Illustration 6g01355612

  1. Use Tooling (A) in order to remove bearing cup (14) from bearing cage (10) .



    Illustration 7g01355616



    Illustration 8g01355622

  1. Remove bolts (15). Use two of bolts (15) as forcing bolts in order to remove bearing cage (16) .



    Illustration 9g02596196

  1. Remove bearing cage (16) and shims (18). Remove O-ring seals (17) from bearing cage (16) .



    Illustration 10g01355620

  1. Use Tooling (B) in order to remove bearing cup (19) from bearing cage (16) .



    Illustration 11g01355696



    Illustration 12g01355700

  1. Remove bolts (20). Use two of bolts (20) as forcing bolts in order to remove bearing cage (21) .



    Illustration 13g02596256

  1. Remove bearing cage (21) and shims (24) .

  1. Use Tooling (C) in order to remove lip seal (22) from bearing cage (21). Remove D-ring seal (23) from bearing cage (21). Remove spacer (23A) .



    Illustration 14g01355724

  1. Use Tooling (B) in order to remove bearing cup (25) from bearing cage (21) .



    Illustration 15g02596277

  1. Attach Tooling (D) and a suitable lifting device to cover (26). The weight of cover (26) is approximately 45 kg (100 lb).

  1. Remove bolts (27), bolts (28), and cover (26) .



    Illustration 16g02596280

  1. Remove pump drive gear (29) .



    Illustration 17g01355864

  1. Use Tooling (E) in order to remove bearing cone (30) from pump drive gear (29). Repeat this Step for the bearing cone on the other side of pump drive gear (29) .



    Illustration 18g01355817

  1. Use Tooling (F) in order to remove retaining ring (31). Remove adapter (31) from pump drive gear (29) .



    Illustration 19g02596281

  1. Use two people in order to remove pump drive gear (33). The weight of pump drive gear (33) is approximately 29 kg (65 lb).



    Illustration 20g01356111

  1. Use Tooling (E) in order to remove bearing cone (34). Repeat for the remaining bearing cone.



    Illustration 21g02596298

  1. Remove pump drive gear (35) .



    Illustration 22g01356151

  1. Use Tooling (E) in order to remove bearing cone (36) from pump drive gear (35). Repeat this Step for the bearing cone on the other side of pump drive gear (35) .



    Illustration 23g01356154

  1. Use Tooling (F) in order to remove retaining ring (37). Remove adapter (38) from pump drive gear (35) .



    Illustration 24g02597016

  1. Remove tube assembly (39) .



    Illustration 25g02596301

  1. Use Tooling (C) to remove bearing cups (40) .



    Illustration 26g02596305

  1. Use Tooling (C) to remove bushings (41). If necessary, remove the dowels for bushing (41) .

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