Actuator Grippers Pin Replacement

General

In order to execute this procedure, you first need to implement the following procedures: Lower Loading Gripper procedure or Upper unloading Gripper procedure . It depends where you intend to replace the pins assembly.

For gripper guide see the followings drawing assemblies:

• Gripper actuator lower assembly
• Gripper actuator upper assembly
  

For actuator gripper pins see the followings drawing assemblies:

• Gripper guide lower sub assembly (balloon [6])
• Gripper guide upper sub assembly (balloon [4])
  

Disassemble

Tools

1. Set of Hex keys (Imperial not metric)
2. Philips head screw driver
3. Work bench/table

Note: Refer to drawing Gripper actuator lower assembly / Gripper actuator upper assembly accordingly.

This procedure refers to the lower gripper and upper gripper as well. (The upper gripper is referred in brackets.)

1. Remove both lower (upper), activators bar roller assembly’s [9] Gripper actuator lower assembly [4] Gripper actuator upper assembly.
2. Remove four screws holding air cylinder plate [16] Gripper actuator lower assembly [21] Gripper actuator upper assembly
3. Pull air cylinder plate backwards to release from locating pins and then lift up complete actuating bar [1] (stainless steel), so that the all the rod pins are free of their bushings [5] Gripper guide upper sub assembly [11] Gripper guide lower sub assembly
4. Locate the damaged rod pin sub-assembly and release shoulder screw [8] Gripper guide upper sub assembly [6] Gripper guide lower sub assembly holding the pin to the gripper guide.
5. Replace the damaged rod pin with the new one and tighten shoulder screw to hold the rod pin to actuating bar.