SENSOR GP-DETONATION 1634411 - Caterpillar

The spring of the recoil spring assembly is compressed under several tons of force.Do not attempt to compress or release the tension of the spring with the nut on the end of the retaining rod.Damaged threads on the retaining rod or nut can cause the assembly to come apart with force, resulting in injury or death.
Note: Prior to assembling the recoil spring assembly, make sure that Tooling (A) is on a level surface.
Illustration 1 g00498786
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Check the condition of the threads on retaining rod (12) and nut (6). If the threads are worn or damaged, use new parts for replacement.
Check the inside of support assembly (8). Make sure that the support assembly is clean and free of dirt.
Assemble the recoil spring assembly loosely.
Install spring (9) in support assembly (8). Install retaining rod (12) and support (10).
Illustration 2 g00507842
Illustration 3 g00498784Note: The use of a pry bar might be necessary to line up support (10) with support assembly (8). Place the pry bar between the recoil spring assembly and movable plate (3) of Tooling (A) to line up the support with the support assembly.
Illustration 4 g00494710
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
The weight of the recoil spring assembly is approximately 279 kg (615 lb). Fasten a suitable lifting device to the recoil spring assembly.
Put the recoil spring assembly in position on adjustable supports (1) in Tooling (A).
Adjust the adjustable supports in order to align the centerline of the recoil spring assembly with the centerline of Tooling (A).
Illustration 5 g00498760
Illustration 6 g00498781Note: The suitable lifting device has been removed from the recoil spring assembly in order to provide a better illustration of level gauge (4).
Put a level gauge (4) on the recoil spring assembly.
Reposition the recoil spring assembly until the recoil spring assembly is level. Reposition the recoil spring assembly until the retaining rod and nut (6) are centered in the hole in reaction plate (2).
The recoil spring assembly is leveled by moving adjustable supports (1) higher or lower.
After the recoil spring assembly is leveled and centered, install pins (5) on the back side of reaction plate (2), as shown.
Illustration 7 g00483426
Install Tooling (C) on Tooling (B), as shown.
Operate Tool (B) in order to hold the recoil spring assembly in position between reaction plate (2) and movable plate (3).
Make sure that the recoil spring assembly is level and centered in Tooling (A).
Illustration 8 g01201063
Make sure that a vertical centerline through the pin holes is at a right angle to support (10), as shown.
Install the support so that the welds are positioned properly in order to obtain Dimension (Y). Dimension (Y) is 53.5 20.0 mm (2.10 0.80 inch).
Remove the suitable lifting device. Close covers (7) on