Case O&K RH Plus Excavator Service Manual Workshop Guide

Manual Included: Workshop Manual: 577 pages Specifications: Brand: Case Model: Case O&K RH Plus Type: Excavator Manuals: Workshop Manual Publication Numbers: 8-44660 (February 1986) Language: English Format: PDF Description Table of Contents Section 1 GENERAL INFORMATION Group 1 Precautions for Disassembly and Assembly ……………………. W1-1 Group 2 Tightening Torque ………………………………………………………… W1-2 Section 2 UPPERSTRUCTURE Group 1 Cab …………………………………………………………………………..W2-1 Group 2 Air Conditioner ……………………………………………………………W2-2 Group 3 Counterweight …………………………………………………………….W2-3 Group 4 Main Frame ………………………………………………………………..W2-4 Group 5 Pump Device ………………………………………………………………W2-5 Group 6 Control Valve ………………………………………………………………W2-6 Group 7 Swing Device ……………………………………………………………..W2-7 Group 8 Pilot Valve …………………………………………………………………..W2-8 Group 9 Solenoid Valve Unit ……………………………………………………..W2-9 Section 3 UNDERCARRIAGE Group 1 Swing Bearing …………………………………………………………….W3-1 Group 2 Travel Device ………………………………………………………………W3-2 Group 3 Swivel Joint ………………………………………………………………..W3-3 Group 4 Track Adjuster …………………………………………………………….W3-4 Group 5 Front Idler …………………………………………………………………..W3-5 Group 6 Upper and Lower Roller ……………………………………………….W3-6 Group 7 Tracks……………………………………………………………………….. W3-7 Group 8 Sprocket ……………………………………………………………………. W3-8 Section 4 FRONT ATTACHMENT Group 1 Front Attachment ………………………………………………………… W4-1 Group 2 Cylinders …………………………………………………………………… W4-2 Manual Extract : BUCKET CIRCUIT This section describes the following: 1. Bucket digging pilot circuit. 2. Auto accel operation. 3. Constant control of standby flow rate. 4. Bucket digging main circuit. 1. BUCKET DIGGING PILOT CIRCUIT Mechatronics: 1. When the operation for bucket digging is performed, the pilot proportional secondary pressure is delivered through port 1 of the right pilot valve (10), flows to PBc port of the control valve (2), and acts on the low pressure sensor (SE-1), and at the same time the bucket spool is switched. 2. The voltage output by the low pressure sensor (SE-1) sent to the mechatro controller and is signal processed, and then the mechatro controller outputs the command current to increase the pump flow rate to solenoid proportional valve (PSV-P1) on the P1 pump side. P1 pump proportional valve increases the flow rate by the pump positive control operation. (Refer to