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• Use the correct tools for the job. • Keep the tools clean and in good condition. • Always use HYSTER APPROVED parts when making repairs. Replacement parts must meet or exceed the specifications of the original equipment manufacturer. • Make sure all nuts, bolts, snap rings, and other fastening devices are removed before using force to remove parts.
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Table of Contents Hydraulic Plate TABLE OF CONTENTS (Continued) This section is for the following models: H40.00-48.00XM-12 (H800-1050HD/HDS) [A917]; H40.00-52.00XM-16CH (H1050HD-CH, 1150HD-CH) [F117]...
Description and Operation 2000 SRM 1233 Description and Operation HYDRAULIC OIL SUPPLY activated. Both pedals will engage the brake pres- sure switch to operate the stop lights. For brake Two gear pumps supply the flow of oil for the com- treadle pressures, see Measurements and Adjust- ponents of the hydraulic system.
2000 SRM 1233 Description and Operation Operation causes oil to flow to the tilt cylinders and pressure to the impact relief valve. The impact relief valve is The main control valve controls the lift, tilt, and aux- set on 25 MPa (3625 psi) and will be activated dur- iliary functions.
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2000 SRM 1233 Description and Operation Legend for Figure 2 NOTE: THE FOLLOWING TABLE INDICATES HYDRAULIC CONNECTIONS TO/FROM THE MANIFOLD. LETTER- ING IN PARENTHESIS INDICATES LOCATION AND IS STAMPED ON MANIFOLD. Hydraulic Line Connections Location Connection Location Connection Pump Supply to Single Spool To/From Accumulator Control Valve (oil supply for auxiliary functions)
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Description and Operation 2000 SRM 1233 Main Control Valve Connections Line Connection Function (AB) To Lift/Tilt Manifold Lift/Lower (AC) To Lift/Tilt Manifold Lift/Lower (AD) To Lift/Tilt Manifold Lift/Lower (AE) To Lift/Tilt Manifold Lift/Lower (UU) To Lift/Tilt Manifold Tilt (VV) To Lift/Tilt Manifold Tilt To Lift/Tilt Manifold Auxiliary...
2000 SRM 1233 Manifold, Section 1 of Hydraulic Plate BRAKE MANIFOLD, SECTION 4 OF back through the brake treadle and return manifold to the hydraulic tank. HYDRAULIC PLATE Parking Brake The brake manifold regulates and directs the flow of oil for the brake cooling circuit, service brake, and Oil for releasing the parking brake comes from the parking brake.
Manifold, Section 1 of Hydraulic Plate 2000 SRM 1233 VALVES AND PRESSURE SWITCHES WARNING Cleaning solvents can be flammable and toxic. Cleaning solvents can also cause skin irrita- tion. When using cleaning solvents, always fol- low the solvent manufacturer’s recommended safety precautions.
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2000 SRM 1233 Manifold, Section 1 of Hydraulic Plate 1. O-RING 3. BACKUP RING 2. O-RING Figure 8. Accumulator Charge Disabling 1. O-RING 5. BACKUP RING Solenoid Cartridge (1.11) 2. BACKUP RING 6. O-RING 3. O-RING 7. BACKUP RING 4. BACKUP RING Figure 6.
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Manifold, Section 1 of Hydraulic Plate 2000 SRM 1233 Check Valve, Common PC/A Spool Actuator Check Valve, Section Plug, Relief Cavity PC/B Spool Actuator Plug, Unloading Cavity Flange Kit Main Relief Valve Figure 9. Main Control Valve Section (Single Spool for Auxiliary)
2000 SRM 1233 Main Control Valve, Section 2 of Hydraulic Plate Main Control Valve, Section 2 of Hydraulic Plate REMOVE 10. Remove the four bolts that fasten the main con- trol valve on the hydraulic plate. WARNING WARNING Lower carriage completely before working on control valve or hydraulic system.
Main Control Valve, Section 2 of Hydraulic Plate 2000 SRM 1233 5. Remove O-rings installed between the auxiliary 2. Disassemble the auxiliary section. See Auxiliary section and lift section. Section. 3. Loosen the four nuts. See Figure 10 and Fig- Lift Section ure 11.
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2000 SRM 1233 Main Control Valve, Section 2 of Hydraulic Plate Legend for Figure 10 Check Valve, Section PC/A Spool Actuator Check Valve, Check Port Plug, Relief Cavity PC/B Spool Actuator Plug, Unloading Cavity Flange Kit Main Relief Valve Figure 11. Main Control Valve Section (Two-Spool for Tilt/Lift) (Sheet 1 of 2)
2000 SRM 1233 Main Control Valve, Section 2 of Hydraulic Plate NOTE: Do not try to repair a relief valve. Replace 3. Install check valves. the relief valve if it is damaged or cannot be properly adjusted. CAUTION When positioning the sections, do not damage NOTE: For the spool designation, each spool has a im- the O-rings.
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