2009/07/27 A Orifice Plug on the Hystat Motor for the 906H Wheel Loader, 907H Wheel Loader, and 908H Wheel Loader May Need to be Torqued or Replaced {3016, 5057} Caterpillar


A Orifice Plug on the Hystat Motor for the 906H Wheel Loader, 907H Wheel Loader, and 908H Wheel Loader May Need to be Torqued or Replaced {3016, 5057}
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2009/07/27 [SEPD1002]
HYDRAULIC SYSTEM
FITTING GP
2009/07/27 A Orifice Plug on the Hystat Motor for the 906H Wheel Loader, 907H Wheel Loader, and 908H Wheel Loader May Need to be Torqued or Replaced {3016, 5057}
Compact Wheel Loader:
906H (S/N: SDH1-UP)
906H (S/N: TPE1-UP)
907H (S/N: MJF1-UP)
907H (S/N: SJM1-UP)
908H (S/N: LMD1-UP)
908H (S/N: MXF1-UP)

Description of Change: The orifice plug on the hystat motor may become loose. The orifice plug will need to be torqued. New parts may need to be placed onto the machine.

Adaptable To: The parts that are listed in Table 1 may need to be placed onto the machine.

Table 1
Number     Qty     Part Number     Description    
1     1     3K-0360     O-Ring Seal    
2     1     6V-7418     Pipe Plug    
3     1     6V-8397     O-Ring Seal    
The new torque is adaptable to the machines that are listed in Table 2.

Table 2
Sales Model     Serial Number and Prefix    
906H     S/N:SDH1-246    
906H     S/N:TPE1-1164    
907H     S/N:MJF1-550    
907H     S/N:SJM1-153    
908H     S/N:LMD1-360    
908H     S/N:MXF1-549    
The new torque has been applied to the machines that are listed in Table 3.

Table 3
Sales Model     Serial Number and Prefix    
906H     S/N:SDH247-UP    
906H     S/N:TPE1165-UP    
907H     S/N:MJF551-UP    
907H     S/N:SJM154-UP    
908H     S/N:LMD361-UP    
908H     S/N:MXF550-UP    
Perform the steps that are listed below.



    Illustration 1g01952586

  1. Remove line (6) and remove line (7) from motor (4). Cap line (6) and line (7) .



    Illustration 2g01952596

  1. Remove adapter (4) from motor (5) .

  1. If orifice plug (8) is located on the inside of adapter (4) tighten orifice plug (8) to a torque of 16 N·m (12 lb ft). If orifice plug (8) is not located on the inside of motor (5) proceed to Step 4.

  1. The orifice plug (8) will be located on the inside of motor (5) if orifice plug (8) is not inside of adapter (4). Motor (5) may need to be removed from the machine in order to locate orifice plug (8). Refer to Disassembly and Assembly, KENR5211, "906H, 907H and 908H Compact Wheel Loaders Power Train", "Piston Motor (Hydrostatic) - Remove". The motor may need to be disassembled in order to locate orifice plug (8). Refer to Disassembly and Assembly, KENR5211, "906H, 907H and 908H Compact Wheel Loaders Power Train", "Piston Motor (Hydrostatic) - Disassemble".

  1. Reassemble motor (5). Refer to Disassembly and Assembly, KENR5211, "906H, 907H and 908H Compact Wheel Loaders Power Train", "Piston Motor (Hydrostatic) - Assemble".

  1. Place motor (5) onto the machine. Refer to Disassembly and Assembly, KENR5211, "906H, 907H and 908H Compact Wheel Loaders Power Train", "Piston Motor (Hydrostatic) - Install".



    Illustration 3g01952755

  1. Place 3K-0360 O-Ring Seal (1) and 6V-8397 O-Ring Seal (3) onto adapter (4) .

  1. Place 6V-7418 Pipe Plug (2) onto adapter (4) and torque 6V-7418 Pipe Plug (2) to a torque of 16 N·m (12 lb ft).

  1. Place line (6) and place line (7) onto the machine.

  1. Check the machine for leaks. Recalibrate the motor if the motor was removed and disassembled.

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