Page 2 - Table of Contents; Section; Required
310-3000 IHT Table of Contents Section Page Foreword........................................................................................................................ i Description and Operation........................................................................................... ii Intro...
Page 3 - FOREWORD
310-3000 IHT i FOREWORD Headquartered in Sullivan, Illinois, Hydro-Gear ® is a world leader in the design, manufacture, and ser-vice of quality hydrostatic transaxles for the lawn and garden industry. The mission of our company is to be recognized by our customers and the in-dustry as a world-class ...
Page 4 - INTRODUCTION; WARNING; SECTION 1. DESCRIPTION AND OPERATION
ii 310-3000 IHT INTRODUCTION The purpose of this manual is to provide use-ful information for servicing the Hydro-Gear ® 310-3000 Integrated Hy dro stat ic Transaxles (IHT). This man u al includes transaxle gen-eral de scrip tion, hy drau lic sche mat ic, tech ni cal spec i fi ca tions, product iden...
Page 5 - HYDRAULIC SCHEMATIC
310-3000 IHT 1 HYDRAULIC SCHEMATIC Figure 1 provides an illustration of the hydrau-lic oil circuit. The oil supply for the hydraulic system of the 310-3000 IHT is also utilized for the lu bri ca tion of the planetary differential drive gears. The input shaft and pump cylinder block are turned in one...
Page 6 - H Y D R O - G E A R; Year Built; OEM Model; PRODUCT IDENTIFICATION; Overall Transaxle Reduction
2 310-3000 IHT H Y D R O - G E A R S U L L I V A N , I L . U . S . A . M a d e i n U . S . A . 8 3 2 8 T 1 4 7 6 3 1 0 - 3 0 0 0 1 6 5 7 5 8 Year Built Hydro-Gear Number Type of Product and Build Information OEM Model Number Serial Number (unique for that model - for that day) Date (Julian - day of ...
Page 7 - SERVICING SAFETY; PERSONAL SAFETY; POTENTIAL FOR SERIOUS INJURY
310-3000 IHT 3 Wear appropriate clothing. Loose or hanging clothing or jewelry can be hazardous. Use the ap pro pri ate safety equipment, such as eye and hear ing protection, and safety-toe and slip-proof shoes. Never use compressed air to clean debris from yourself or your clothing. TOOL SAFETY Use...
Page 8 - SECTION 3. TROU BLE SHOOT ING; Possible Cause
4 310-3000 IHT WARNING Do not attempt any ser vic ing or ad- just ments with the engine run ning.Use extreme caution while inspecting the drive belt assembly, and all vehicle link age! Follow all safety pro ce dures out lined in the ve hi cle owner’s manual! SECTION 3. TROU BLE SHOOT ING In many cas...
Page 9 - Check the vehicle operator’s manual for
310-3000 IHT 5 SECTION 4. SERVICE AND MAINTENANCE NOTE: Any servicing dealer attempt-ing a war ran ty re pair must have prior approval be fore con duct ing main te- nance of a Hydro-Gear ® product un- less the ser vic ing deal er is a cur rent Authorized Hy dro-Gear Ser vice Center. EXTERNAL MAINTEN...
Page 10 - FLUIDS; If you over
6 310-3000 IHT FLUIDS The fl uids used in Hydro-Gear ® products have been carefully selected, and only equivalent, or better prod ucts should be sub sti tut ed. Typically, an engine oil with a minimum rating of 9 cSt (55 SUS) at 230° F (110° C) and an API clas- si fi ca tion of SJ/CD is rec om mend ...
Page 11 - BRAKE MAINTENANCE; BRAKE SETTING; Remove the brake arm bias spring, and; POTENTIAL FOR SERIOUS IN JU RY
310-3000 IHT 7 BRAKE MAINTENANCE BRAKE SETTING 1. Remove the brake arm bias spring, and then the cotter pin securing the brake castle nut. 2. Insert a 0.015" (.381 mm) feeler gage be- tween the brake disc and top brake puck, and then set the brake by tightening or loos en ing the cas tle nut. 3....
Page 14 - PURGING PROCEDURES; CAUTION
10 310-3000 IHT PURGING PROCEDURES Due to the effects air has on ef fi ciency in hy- dro stat ic drive applications, it is critical that it be purged from the system. These purge procedures should be im ple -ment ed any time a hydrostatic system has been opened to facilitate maintenance or any addit...
Page 15 - product un less the; GENERAL INSTRUCTIONS; USE CARE IN REMOVING THE HUB TO; LIMITED DISASSEMBLY
310-3000 IHT 11 SECTION 5. REPAIR NOTE: Any servicing dealer attempting a war ran ty re pair must have prior ap- prov al be fore con duct ing main te nance of a Hydro-Gear ® product un less the ser vic ing deal er is a cur rent Authorized Hy dro-Gear Ser vice Center. GENERAL INSTRUCTIONS Cleanliness...
Page 17 - BRAKE ASSEMBLY; Refer to Figures 6 and 7.; DISASSEMBLY; che for other models.
310-3000 IHT 13 BRAKE ASSEMBLY Refer to Figures 6 and 7. DISASSEMBLY The following procedure is for model 324-3000. Reference micro fi che for other models. 1. Remove lock nut (95), washer (77), brake spring (134), and washer (77) from brake pull rod (152). 2. Remove cotter pin (129), and washer (77...
Page 18 - INSPECTION; Install the brake yoke assembly onto two
14 310-3000 IHT Figure 7. Brake Pull Rod Assembly Ad just ment INSPECTION 1. Inspect the brake pucks (120) for excessive wear. 2. Replace with new if necessary. ASSEMBLY 1. Install inner brake puck (120), and brake disc (85). 2. Assemble the brake yoke assembly, by in- stall ing puck plate (131), ou...
Page 19 - BYPASS ASSEMBLY
310-3000 IHT 15 BYPASS ASSEMBLY Refer to Figure 8. DISASSEMBLY 1. Remove self tapping screw (138), and ex- ten sion spring (136). 2. Remove snap ring (42), and bypass arm (41). 3. Remove bypass lip seal (40). INSPECTION 1. Inspect spring pin (137) for damage. ASSEMBLY 1. If necessary, install new sp...
Page 20 - place if nec es sary.; ASSEMBLY; Reference Pages 9, 10 for proper neutral; CONTROL ARM ASSEMBLY; Refer to Figure 9, Page 18; NEUTRAL ASSEMBLY
16 310-3000 IHT 2. Inspect trunnion arm lip seal (33), and re- place if nec es sary. ASSEMBLY CONTROL ARM ASSEMBLY 1. Install trunnion arm lip seal (33), into main housing (1). 2. Install stud (36), per Table 5, Page 16 and fric tion puck (37). 3. Install control arm (26), onto trunnion arm (31), an...
Page 24 - INPUT SHAFT ASSEMBLY
20 310-3000 IHT INPUT SHAFT ASSEMBLY Refer to Figure 12. DISASSEMBLY 1. Drain the oil from the transaxle. 2. Remove snap ring (7), input shaft lip seal (5), and spacer (4). 3. Remove input shaft assembly (12), (8), (6). 4. Remove washer (13) from cavity. INSPECTION 1. Inspect bearing (8) for damage ...
Page 25 - CHARGE PUMP ASSEMBLY; it is prop er ly oriented.
310-3000 IHT 21 CHARGE PUMP ASSEMBLY Refer to Figure 13. DISASSEMBLY Note: Before disassembling, note the ori en ta tion of the charge pump cover (54). Scribe or mark the charge pump cover (54) for correct orientation during as sem bly. 1. Remove two screws (29) from the charge pump cover (54), and ...
Page 28 - Secure housings by installing the eight
24 310-3000 IHT A C B D A C B D REF. Part Name 70 Washer 71 Washer 63 51t Ring Gear 64 Planetary Carrier 65 Differential Miter Gear 66 Differential Miter Gear 73 Hex Jam Nut 76 Axle Shaft 80 Torx Head Screws 96 Bearing Sleeve REF. Part Name 1 Main Housing 2 R.H. Housing Assembly 58 Carrier Pin 59 Pl...
Page 33 - TRANSAXLE INSTALLATION
310-3000 IHT 29 ASSEMBLY AFTER A COMPLETE TEAR-DOWN If the unit has been torn down completely, the fol low ing sum ma ry identifies the assembly pro ce dures necessary to com plete ly assemble the unit, in the order they must be completed. Each as sem bly procedure is located by a page ref er ence. ...
Page 35 - ITEMS LIST
310-3000 IHT 31 NO. DESCRIPTION 79 Gasket Material/Sealant 80 Torx Head Screw 5/16 - 18 81 Needle Bearing 82 Washer83 Retaining Ring 84 Lip Seal 85 Brake Disc 87 Washer88 Screw 5/16 - 24 X 1-3/4 89 Bearing90 Spacer, Locating 91 O-Ring92 Countersunk Screw 93 Spring Spacer 94 Spacer95 Nut, Hex Lock 5/...
Page 36 - SECTION 6. GLOSSARY OF TERMS
32 310-3000 IHT Axial Piston: Type of design for hydraulic motors and pumps in which the pistons are arranged parallel with the spindle (input or output shaft). Bantam Duty: A descriptive term relating to the product capacity (meaning: light duty). Bypass Valve: A valve whose primary function is to ...
Page 38 - NOTES
