COMMERCIAL REAR WHEEL DRIVE REBUILD GUIDE Table of Contents – Page 1 of 1 PREFACE HOW TO USE THIS PUBLICATION COMMERCIAL INPUT SHAFT 1983-1989 COMMERCIAL SHIFTER MECHANISM 1983-1985 SERVICE TIP: 1986-1989 SERVICE TIP: COMMERCIAL INTERMEDIATE SHAFT 1983-1985 1986-1989 COMMERCIAL SUSPENSION SYSTEM MINOR REBUILD** 1983 SERVICE TIP: MAJOR REBUILD** 1983 SERVICE TIPS: MINOR REBUILD** 1984-1985 SERVICE TIPS: MAJOR REBUILD** 1984-1985 SERVICE TIPS: MINOR REBUILD** 1986 SERVICE TIP: MAJOR REBUILD** 1986 SERVICE TIP
PREFACE The rear drive systemon ToroCommercial Rear Drive Walk Power Mowers has been improved almost yearly since its introduction in1983. Whilethe result is a very durable, high quality mower, servicing can be difficult because of the many improvements and parts cross-references. The purpose of this guide isto aid in servicing the rear drive system on 1983 it will: through 1989 Toro Commercial Rear Drive Mowers. We’re hopeful that 1.
Use Table of Contents How to This Publication .............................................................. Page 2 Input Shaft (1983-1989) ............................................................................. 3 Shifter Mechanism (1983-1985) (1986-1989) ............................................................................. ............................................................................. 4 5 Intermediate Shaft (1983-1985) (1986-1989) .................................
How to Use This Publication Major Rebuild** 1983 Rebuild With Original ~Company's recommendation on how to rebuild the system. - ~- Ref X Part Number Description 1 48-2450' Output Bushing 2 __ __ 2 3 4 5 6 7 48-2170 Cap. End 48-2390 Spring Assy Arm 25-7740 Knob Washer 36-4770* Key 39-9680* 39-9650* Spring __ - ___ __ I ' Qty. 2 - 2 2' 2 2 2 f h I 32121-98*( These numbers refer to 11 bottom of the page.
Commercial Input Shaft 1983-1989 Rebuild With Original 2 12 Rebuild as original.
Commercial Shifter Mechanism 1983-1 985 Rebuild With Original 1 15 16 Ref # Number Part Description 2 3 4 5 6 7 8 9 ] Lever Shift Cover 48-2560 3256-14 Screw Machine 3290-134 29-9520 Yoke Shift 29-9690WasherPlain 42-4740 38Gear Tooth 364710SpacerGear Tooth 42Gear 29-9271 46-3560 52Gear Tooth RetainerKey 39-7830 Sleeve Body 110 1 39-6730 12 29-9330 Shift Key 13 39-6720 Sleeve 29-9340 14 CollarShift 15 36-4780WasherPlain 16 PinSpiral Locknut 17 3296-2 18 29-9560 Lever Shift 19 32121-99 Roll Pin ]
Commercial Shifter Mechanism (cont'd) 1986-1 989 Original Rebuild With .
Commercial Intermediate Shaft 1983-1 985 Rebuild With Original 1 1 Ref # Number Part Description 252-103 1 Bearing Closed 36-4790 2 Washer Thrust 1Key Square 4 53-7950 39-7843 Intermediate Shaft 39-6670 5 Gear Bevel 12Gear Tooth 6 463540 7 463550 14Gear Tooth 39-6650 8 18Gear Tooth Ref # PartNumberDescription Closed Bearing 252-1 03 Thrust Washer 36-4790 Square Key 39-7841 Intermediate Shaft 48-2520 Bevel Gear 39-6670 12 Tooth Gear 463540 14 Tooth Gear 46-3550 18 Tooth Gear 39-6650 ] 1.
Commercial Intermediate Shaft 1986-1 989 Rebuild With Original 1 Rebuild as original Ref # Part Number Description 252-103 1 Closed Bearing Thrust Washer 2 36-4790 39-7843 Square Key 3 4 53-7950 Intermediate Shaft Bevel Gear 39-6670 5 12 Tooth Gear 46-3540 6 46-3550 14 Tooth Gear 7 18 Tooth Gear 39-6650 8 Qty.
Commercial Suspension System Minor Rebuild** 1983 Rebuild With Original 0 Ref # 1 2 3 4 5 6 7 8 9 10 11 1l a 11b 11C 11d Ref # Number Part Description Part Description Number 48-2 1 70 End Cap 48-21 70 2 2 1 Cap End 48-2390 Spring Arm Assy 48-2390 2 2 Spring2 Assy Arm Knob Arm 2 25-7740 25-7740 3 Knob 4 39-9680 2 2 Key 39-9680 Key Spring 2 2 5 39-9650 39-9650 Spring 2 Thrust Washer 48-2890 6 48-2890 Washer Thrust Keyed Thrust Washer 2 48-2580 7 48-2580 Keyed Thrust Washer 2 4 32151-68 Grip Ring 8 G
Commercial Suspension System (cont’d) Major Rebuild** 1983 Rebuild With Original ____-- I Ref # PartNumber 2Bushing 48-2450* Output1 Description -- 2 48-21 270 48-2390 3 25-7740 4 2 2 2 39-9650 6 End 48-2170 2 2 Assy 48-2390 Arm Spring 3 Knob 25-7740 4 2 Washer 5 36-4770* Key 39-9680* 6 Spring 39-9650* 7 8 61-8040* -- Cap -- 48-2890 Thrust Washer 8 Keyed Thrust Washer 2 2 39-9160 11 12 444600 ] Wheel Cover 13 48-2540 Pivot Arm Assy Qty.
Commercial Suspension System (cont'd) Minor Rebuild** 1984-1985 Original Rebuild With 1 2 Ref # Number Part 1 48-2170 Cap 39-9160 Description ,End 2 49-8810 1 Spring Arm Assy 3 25-7740Arm Knob Key 4 39-9680 Spring (1 984) 5 39-9650 53-7850 Spring (1985) Washer 6 36-4770 Thrust 7 48-2890 Washer Keyed Thrust Washer 8 48-2580 9 32151-68 Ring Grip Pinion 10 11 44-0600 Cover Wheel 3 Pivot Arm Assy 1248-2540 Includes: 47-7270 12a Bearing Needle Bushing 12b 47-2890 Grease Fitting 1 2 ~302-56 12d47-7260 Seal
Commercial Suspension System (cont’d) Major Rebuild** 1984-1 985 Original Rebuild With I \ 14A PartNumberDescription 1 48-2450 Output Bushing CoverShaft 24-7922 48-2170 2 End Cap 49-8810 3 Spring Arm Assy 2 25-7740 4 2 Washer 5 36-4770 Key 6 39-9680 2 Key nion at;: Ref ’ (1985) Spring 53-7850 8 44-0850 Output 2 Washer Thrust 48-2890 9 48-2580 10Keyed Thrust Washer 2 End 3 14 -- Ref # PartNumber Description .
9680 Commercial Suspension System (cont’d) Minor Rebuild** 1986 Rebuild With Original 1 Ref # Number Part 1 70 48-21 Cap 2 49-8810 3 25-7740 Arm 4 5 39-9650 6 36-4770 48-2580 7 8 3215181Ring 9 39-9160 10 44-0600 11 53-7940 11a 52-2450 l l b 47-2890 1I C 302-56 ** Description End Spring Arm Assy Knob Key Spring Washer Keyed Thrust Washer Snap Pinion Cover Wheel Assy Arm Pivot Includes: Bearing Ball Bushing Grease Fitting Qty.
Commercial Suspension System (cont'd) Major Rebuild** 1986 Rebuild With Original 3 14A 14 . Ref # PartNumber 2 3 4 5 6 7 8 9 10 48-2450 24-7922 48-2 1 70 49-8810 25-7740 36-4770 39-9680 39-9650 44-0850 48-2580 32151-61 11 12 13 44-0600 39-9160 53-7940 1 t 1 13a 52-2450 13b 47-2890 13c 302-56 * 1. 2. 3.
Commercial Suspension System (cont'd) Minor Rebuild** 1987 f-- Rebuild With Original 1 1 12- \ 12c 13B Ref # Number Part Description 1 3215136 Retaining Ring 2 Washer Thrust 36-4770 2 70 48-21 3 1 Spring Arm Assy 2 61-8081 4 Arm Knob 25-7740 52 Key 39-9680 6 Spring 39-9650 7 2 Roll Pin 32121-98 8 49-7700 Keyed 9Thrust Washer 2 39-9160 10 2 Pinion ing Grip 32151-6811 12 444600 2Cover Wheel -8200 61 13 Pivot Arm Assy 2 Includes: 2 Bearing Ball 13a 61-8050 2 13b Bushing 47-2890 1 3 ~302-55 Grease Fitti
Commercial Suspension System (cont'd) Major Rebuild** 1987 158 2 Ref # Part Number Description Ref # PartNumberDescription aty 1 2Bushing Output 48-2450* 48-2450 Output2Bushing 1 2 Ring Retaining 32151-362 Ring Retaining 2 32151-362 3 36-4770 2 Washer Thrust Thrust 36-4770 2 Washer 3 2End Cap 70 48-21 4 70 4 1 48-2 End 2 Cap Spring 2 Assy Arm 5 66-7561 Spring Assy Arm 2 5 61-8081 Knob 25-7740 6 Arm 6Knob25-7740 2 Key 39-9680* 7 7 Key 2 39-9680 2 2 Spring 39-9650* 8 Spring 8 39-9650 1 66-7330* 9Output Sha
Commercial Suspension (cont’d) Minor Rebuild** 1988-1 989 Rebuild With Original 13B .
Commercial Suspension (cont’d) Rebuild With 158 15B -.
