Instructions- Parts Viscount® I Hydraulic Motor 312484C EN Model 255345, Series A 1500 psi (10 MPa, 102 bar) Maximum Hydraulic Input Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions.
Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 General Information . . . . . . . . . . . . . . . . . . . . . . 5 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pressure Relief Procedure . . . . . . . . . . . . . . . . . 6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . .
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable. WARNING WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury.
Warnings WARNING WARNING FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion: • Use equipment only in well ventilated area. • Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and can ignite or explode if spilled on hot surface.
Installation Installation General Information Startup Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing. Before each use, check the hydraulic fluid level and add fluid as necessary to fill the lines. Always use Genuine Graco Parts and Accessories, available from your Graco distributor. Grounding • Pump: Use a ground wire and clamp. See separate system manual. • Hydraulic, and fluid hoses: Use only electrically conductive hoses.
Installation Pressure Relief Procedure SKIN INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury.
Troubleshooting Troubleshooting Problem Hydraulic Motor stops running. Cause Solution Worn valve or valve balls (3); broken valve spring (18). Repair valve. See page 8. Broken trip rod (17), spring (12) or retainers (11). Repair valve. See page 8. Poor performance or reduced efficiency. Worn piston seals (5, 6, 7). Repair valve. See page 8. Oil leaking around cylinder. Worn cylinder o-rings (2). Replace o-rings. See page 8.
Service Hydraulic Motor Disassembly NOTE: Repair Kit 247557 is available. For best results, use all the parts in the kit. Kit parts are marked with an asterisk in the Parts List. When disassembling, lay out all parts in sequence, to make reassembly easier. Clean and inspect all parts for wear or damage before reassembling. Replace as necessary. 1. Remove the hydraulic motor from the pump as explained in the separate system manual. Lay it on its side in a pan. 2.
Service 23 27 24 22 28 29 21 1 5 31 20 6 30 7 49 13 16 38 14 8 N 50 11 39 12 15 2 32 19 4 36 3 11 48 37 25 18 26 3 32 (Ref) 52 9 28 N 27 17 2 39 (Ref) N 10 38 33 34 2 35 ti11189b FIG.
Service Hydraulic Motor Reassembly 1. Install the block packing (14*) and wiper (15*) in the housing retainer (36). The spring of the block packing and the lips of the wiper must face up. Install the o-ring (2*) on the top surface of the retainer. See FIG. 2. 2. Install the bearing (13*) and block packing (49*) in the bottom cylinder cap (35). The lips of the block packing must face up. 10. To assemble the valve mechanism, use Repair Tool 189305 as follows: a.
Service 1 Spring faces up. 6 Apply primer to threads and let dry 3 to 4 minutes 2 Lips face up. 7 Apply 1 or 2 drops of thread sealant to female threads. 3 Apply thread sealant to female threads. 8 Torque to 42 to 45 in.-lb (4.7 to 5.1 N•m). 4 Torque to 54 to 56 in.-lb (6.1 to 6.3 N•m). 9 Torque to 30 to 40 ft-lb (41 to 54 N•m). 5 Wide end faces yoke (4).
Viscount I Hydraulic Motor Parts Viscount I Hydraulic Motor Parts Model 255345, Series A 23 27 24 22 28 29 21 1 5 31 20 6 30 7 49 13 16 38 14 8 N 50 11 39 12 15 2 32 19 4 36 3 11 48 37 25 18 26 3 32 (Ref) 52 9 28 N 27 17 2 39 (Ref) N 10 38 33 34 2 35 ti11189b 12 312484C
Viscount I Hydraulic Motor Parts Model 255435, Series A Ref. No. 1* 2* 3* 4* 5* 6* 7* 8* 9* 10▲ 11* 12* 13 14 15 16* 17* 18* 19* 20* 21* 22 23 24* 25* 26* 27 28 29 30* 31 32 33 34 35 36 37 38 Part No. Description Qty.
Accessories Accessories NOTE: Use Only Genuine Graco Parts and Accessories. Graco-Approved Hydraulic Fluid Premium, ISO Grade 46 petroleum-based hydraulic oil containing rust and oxidation exhibitors and anti-wear agents. 210° F (99° C) Flash Point. Parts Description 169236 5 gallon (20 liter) 207428 1 gallon (3.8 liter) Technical Data Maximum hydraulic fluid input pressure . . . . . . . . . . . . . . 1,500 psi (10 MPa, 102 bar) Maximum hydraulic fluid input volume . . . . . . . . . . . . . . .
Notes Notes 312484C 15
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
