HOSE-HUMP 3375118 - Caterpillar

Canceled Part Numbers and Replaced Part Numbers
This document may not include all Canceled part numbers and replaced part numbers. Use NPR on SIS for information about Canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.Safety
Personal injury or death can result from improperly checking for a leak.Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death.If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
Pump test pressures in this guideline may exceed the normal operating range of the hydraulic test hoses utilized when connecting the tested pump to the test bench. However, the order of magnitude of these pressures is significantly below the burst strength of the Caterpillar "XT6" product.High pressure oil can escape through improperly assembled hoses and fittings. High pressure oil can also escape through poorly maintained hoses and fittings. High pressure oil may also leak through hose that has become damaged over the life of the hose due to the pressure levels that occur during test bench operation.Personal injury or death can result from improper hose & fitting inspection or improper hose replacement procedures. Escaping fluid under pressure can penetrate body tissue causing serious injury, and possible death.Thoroughly inspect all testing hoses, fittings, and quick disconnects prior to any testing operation. Check the assembly date tag or hose assembly log date for a hose life indicator. Replace all Test Bench hoses at a minimum of every 2 years or earlier if the hose or fittings appear to be damaged.
Summary
This procedure is not specific to any one vane pump. The information in the document should prepare a technician to properly bench test most types of vane pumps after a rebuild. Specific specifications are not given. This procedure validates a vane pump by volumetric efficiency, which is discussed later.References
Table 2
References
Media Number Title
REHS1761 Required Tooling for Bench Testing Hydraulic Components
SEBF8810 Hydraulic Pump, Motor, and Cylinder Bench Test Procedure Reference Manual
SEHS8892 Operating Instructions for Caterpillar 1U-9400 Series Hydraulic Test Center
NEHS0563 Tool Operating Manual for 9U-5000 Series Hydraulic Test Bench Mounting and Drive Configurations
There are many possibilities for mounting a vane pump. Caterpillar has two bolt and four bolt mounting plates. The mounting plates fit pumps with SAE A, B, C, D, E, or F mounting flanges. Refer to Special