PLATE 7G7617 - Caterpillar

Backhoe Loader: 416E (S/N: SHA1-UP; BWC1-UP; CBD1-UP; LMS1-UP) 416F (S/N: KSF1-UP; LWT1-UP) 416F2 (S/N: LYA1-UP; HWB1-UP) 420E (S/N: PRA1-UP; DJL1-UP; DAN1-UP; HLS1-UP; KMW1-UP) 420F (S/N: LTG1-UP; LKH1-UP; JWJ1-UP; SKR1-UP) 420F2 IT (S/N: LYC1-UP; HWD1-UP) 420F2 ST (S/N: LYB1-UP; HWC1-UP) 422E (S/N: HBE1-UP; DSK1-UP; MAW1-UP) 422F (S/N: LRH1-UP) 422F2 (S/N: LYF1-UP) 427F2 (S/N: HWK1-UP) 428E (S/N: DXC1-UP; DPH1-UP; SNL1-UP) 428F (S/N: LBH1-UP; RAK1-UP; SJW1-UP) 428F2 (S/N: LYG1-UP; HWN1-UP) 430E (S/N: MXB1-UP; SWC1-UP; SCD1-UP; RLN1-UP; DDT1-UP; EAT1-UP) 430F (S/N: RDF1-UP; LNH1-UP; RGS1-UP; LDY1-UP) 430F2 IT (S/N: LYE1-UP; HWG1-UP) 430F2 ST (S/N: LYD1-UP; HWE1-UP) 432E (S/N: JBA1-UP; BXE1-UP; RXS1-UP) 432F (S/N: SEJ1-UP; LNR1-UP; PXR1-UP) 432F2 (S/N: LYJ1-UP; HWP1-UP) 434E (S/N: SXB1-UP; SEF1-UP; FSH1-UP; SJL1-UP) 434F (S/N: LDH1-UP; MTR1-UP) 434F2 (S/N: LYK1-UP; HWR1-UP) 442E (S/N: EME1-UP; PCR1-UP; GKZ1-UP) 444E (S/N: NBA1-UP; HXB1-UP; LBE1-UP) 444F (S/N: LJJ1-UP; JXR1-UP) 444F2 (S/N: LYL1-UP; HWS1-UP) 450E (S/N: EBL1-UP)Engine: 3512B (S/N: SRH1-UP)Introduction
Note: This publication is a general guideline for the cleaning procedure of a hydraulic system after a pump, motor, or cylinder failure on Backhoe Loaders. This special instruction provides the procedures for cleaning the hydraulic system of the Backhoe Loaders after a cylinder or pump failure. Performing this procedure will reduce the risk of additional system damage.When a cylinder or pump failure is suspected, minimize usage of the machine in order to avoid further damage. The major symptoms of component failure are listed below. After you determine the component that has failed in your machine, follow the appropriate procedure in this special instruction.The following symptoms may indicate failure of the cylinder:
Excessive cylinder drift
Implement cylinders respond slowly or cylinders do not move.
Implements have low power.
Implements have low forceThe following symptoms may indicate failure of the implement pump:
Implement cylinders respond slowly or cylinders do not move.
Implements have low power.
Implements have low force.
Maximum system pressure cannot be reached.
Unusually loud noise is heard from the piston pump.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Do not allow any dirt or foreign material to get into the hydraulic system during assembly, connection of lines, when components are filled with fluid, or during any maintenance operation.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartm