PUMP GP-PISTON 3697135 - Caterpillar

Work Bench
The following items should be located next to the parts counter:
A layout bench equipped with a bench vise.
A tape measure for checking total assembly length.
A 7S-1125 protractor for measuring the angle of orientation of the old assembly.
A calculator available to prevent errors when calculating the hose cut-off factor.
An 8T-0450 thread identification kit for measurement and identification of the couplings.
Caterpillar's Hydraulic Information System in order to identify the correct part numbers.
A copy of Caterpillar's Product Guide, PECP5030, "Cat Hose Products & Tooling" as a back-up to Caterpillar's Hydraulic Information System is unavailable.The parts availability must be physically verified including any seals that are required. All required seals must be kept in a clean shipping bag that will be attached to the finished assembly.Coupling Storage Cabinets
All couplings should be stored in cabinets or drawers. The cabinets need to be labeled on the outside for easy identification of parts location. Store the low and medium pressure couplings separate from the high pressure couplings. This will ensure that the low and medium couplings aren't used on the high pressure hoses. The flow of the assembly process will be more efficient by keeping the low and medium pressure couplings near the machine that is used to crimp these couplings. Couplings are not interchangeable with different styles of high pressure hose. Reusable couplings need to be stored separately from the permanent couplings. All of the drawers or compartments need to be labeled with the correct part number of the coupling or with a bar code. This will make it easier for inventory control and ordering. Hose Storage and Cut-off Area
The technician must cut the correct length of the proper hydraulic hose. The hose storage area should have all the hoses neatly rolled up and stored in slots or bulk hose can be stored on the shipping spools. All hoses may be run through a tubing storage/delivery system, as long as they are separated and easily accessible. Tubing takes the curl out of the bulk hose. The minimum length of the storage tubing is 3 m (10 ft.) in order to ensure the proper straightening of the hose. Utilize the 202-8559 cut-off support group in order to ensure a perpendicular hose cut. The saw needs to be equipped with a fume exhauster to draw the fumes and dust out of the area. This will cut down on the airborne contamination. Use a fine tipped gel pen to mark the cut location on the hose. Utilize 174-8912 abrasive cut-off wheel . Proper safety equipment, such as a face shield is recommended when operating the saw. Measure the hose again to ensure the hose has been cut to the proper length.Hose Cleaning
The inside of the hose must be cleaned after cutting to the correct length. Refer to Special Instruction, SEBF8485, "Cleaning Fluid-Carrying Hose and Tube Assemblies in Shop and Field Applications" for the complete cleaning instructions. This manual also lists the hose cleaning groups available through Caterpillar. The hose cleaning group consists of