Form No. 3402-120 Rev A Parts Catalog TRX-20 Trencher Register at www.Toro.com. Original Instructions (EN) Model No. 22973—Serial No. 316000001 and Up Model No. 22973G—Serial No.
Ordering Replacement Parts For example, a wheel assembly might be identified by reference number 6, the tire by 6:1, the valve by 6:2, and the wheel by 6:3. When you order the assembly identified by reference number 6, you receive all parts identified by reference numbers 6:1,6:2, and 6:3. However, you may also order any part individually. Reference numbers of this type appear in illustration and in parts lists.
Contents Main Frame Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Tower and Fuel Tank Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Track Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Frame Assembly 3402-120A 4 A2
Main Frame Assembly (continued) Ref. 1 1:2 1:3 1:4 2 2:1 3 3:1 9 10 11 12 15 17 Part Number Qty. Description 127-9602 1 Main Frame ASM 100-4650 1 Decal-Warning 93-7814 2 Decal-Danger 93-6686 1 Decal-Oil, HYD 114-3075 1 Sight Glass ASM 237-79 1 O-Ring 354-120 1 Fitting-HYD, 90 DEG 237-79 1 O-Ring 114-3039 1 In-Tank Filter ASM 114-3042 1 Hose-Breather 68-6150 1 Breather 2412-36 2 Clamp-Hose 93-9084 2 Decal-Point, Lift 1-523420 1 Bumper Ref. 18 19 20 21 22 23 24 25 26 27 28 29 30 5 Part Number Qty.
Tower and Fuel Tank Assembly 3402-120A 6 A3
Tower and Fuel Tank Assembly (continued) Ref. 1 2 3 4 5 5:1 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Part Number Qty.
Track Drive Assembly 3402-120A 8 B2
Track Drive Assembly (continued) Ref. 1 2 3 3:1 3:2 4 4:1 4:2 5 5:1 6 7 7:1 7:2 8 9 10 11 12 13 14 15 16 17 18 19 19:1 19:2 20 21 Part Number Qty.
Hydraulic Pump Assembly No.
Hydraulic Pump Assembly No. 117-6409 (continued) Ref. 1 3 4 5 6 7 8 10 15 18 19 20 21 22 25 Part Number Qty. Description 115-4464 1 Housing Kit 106-8753 2 Pin-Headless, Straight 106-8754 4 Bolt-HF 106-8755 1 O-Ring 106-8756 1 Charge Pump Kit 104-2122 1 Gerotor ASM 106-8757 1 O-Ring 104-2111 2 Capscrew 106-8759 1 Bypass Valve Kit 103-2664 1 Input Shaft Kit 104-5311 1 Bearing-Ball 104-5310 1 Seal-Lip 104-5308 1 Spacer 104-5309 1 Ring-Retaining 103-2666 1 Cylinder Block Kit Ref.
Hydraulic Pump Assembly No.
Hydraulic Pump Assembly No. 117-6410 (continued) Ref. 1 3 4 5 6 7 8 10 15 18 19 20 21 22 25 Part Number Qty. Description 115-4464 1 Housing Kit 106-8753 2 Pin-Headless, Straight 106-8754 4 Bolt-HF 106-8755 1 O-Ring 106-8756 1 Charge Pump Kit 104-2122 1 Gerotor ASM 106-8757 1 O-Ring 104-2111 2 Capscrew 106-8759 1 Bypass Valve Kit 103-2664 1 Input Shaft Kit 104-5311 1 Bearing-Ball 104-5310 1 Seal-Lip 104-5308 1 Spacer 104-5309 1 Ring-Retaining 103-2666 1 Cylinder Block Kit Ref.
Hydraulic Motor Assembly No.
Hydraulic Motor Assembly No. 104-8470 (continued) Ref. 1 2 Part Number Qty. Description 115-4061 1 Seal Kit 3257-42 1 Key-Woodruff Ref. 3 4 15 Part Number Qty.
Parking Brake Assembly 3402-120A 16 B3
Parking Brake Assembly (continued) Ref. 1 2 3 4 4:1 4:2 4:3 5 Part Number Qty. Description 117-6421-03 1 Handle-Brake 7-0030 1 Screw-Shoulder, HH 32128-20 1 Nut-HF 103-4335 1 Brake Rod ASM 1-633131 2 Yoke-Linkage, Brake 103-3907 1 Linkage-Handle, Brake 3219-3 2 Nut-Hex 103-2399 1 Pin-Spring, Clevis Ref. 6 7 8 9 10 11 12 13 17 Part Number Qty.
Engine Assembly 3402-120A 18 C2
Engine Assembly (continued) Ref. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Part Number Qty.
Gear Pump, Idler Arm and Pulley Assembly 3402-120A 20 D2
Gear Pump, Idler Arm and Pulley Assembly (continued) Ref. 1 2 3 3:1 4 4:1 4:2 5 5:1 6 7 8 9 10 11 12 12:1 13 14 15 16 17 18 Part Number Qty.
Gear Pump Assembly No.
Gear Pump Assembly No. 114-3072 (continued) Ref. 1 2 Part Number Qty.
Hydraulic Control Assembly 3402-120A 24 D3
Hydraulic Control Assembly (continued) Ref. 1 2 2:1 2:2 3 3:1 3:2 4 4:1 4:2 5 5:1 6 6:1 6:2 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Part Number Qty.
2-Spool Valve Assembly No. 115-4062 Ref. 1 3 4 5 6 7 8 9 10 11 12 3402-120A Part Number Qty.
Hydraulic Motor Assembly No. 131-0652 Ref. 1 1:1 1:2 1:3 1:4 1:5 1:6 Part Number Qty.
Hydraulic Oil Cooler Assembly 3402-120A 28 D4
Hydraulic Oil Cooler Assembly (continued) Ref. 1 2 3 4 5 6 7 8 9 Part Number Qty. Description 117-6296-01 1 Mount-Cooler 104-2809 1 Fan 321-3 8 Screw-HH 104-7201 8 Nut-Flange, NI 105-5723 4 Spacer-Tube 131-0733 8 Clamp 105-0352 1 Exchanger-Heat 322-11 4 Screw-HH 3296-29 4 Nut-Lock, NI Ref. 10 10:1 11 12 13 14 15 16 17 29 Part Number Qty.
Trencher Head and Auger Assembly 3402-120A 30 E2
Trencher Head and Auger Assembly (continued) Ref. 1 1:2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Part Number Qty. Description 117-6423 1 Trencher Head ASM 99-9952 2 Decal-Danger 120-7352 1 Pin-Pivot 321-18 1 Screw-HH 3296-42 1 Nut-Lock, NI 302-5 3 Fitting-Grease 121-4571 1 Spacer-Pivot 104-9216 2 Washer-Hardened 117-6327 1 Bolt-HH 3296-53 1 Nut-Lock, NI 302-34 1 Fitting-Lube 115-1279-03 1 Bracket-Shield 322-5 8 Screw-HH 3296-29 11 Nut-Lock, NI 322-23 1 Screw-HH 3256-3 4 Washer-Flat 117-6317 1 Shield-Dirt Ref.
Traction Control Assembly 3402-120A 32 F2
Traction Control Assembly (continued) Ref. 1 2 2:2 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 Part Number Qty.
Electrical Assembly 3402-120A 34 G3
Electrical Assembly (continued) Ref. 1 1:1 1:2 1:3 1:4 2 3 3:1 3:2 4 5 6 7 8 9 10 11 12 13 14 Part Number Qty.
Cylinder and Crankcase Assembly Ref. 130 130A 172 214 670 11004 11008 11008A 11022 11022A 11061 11061A 13272 14091 16126 27012 3402-120A Part Number Qty. Description 93-8548 10 Bolt-Flanged (6X25) 120-7406 6 Bolt-Flanged (8X70) 114-8658 4 Bolt-Stud (8X18) 115-6422 1 Screw-Pan (4X8) 95-9771 2 O-Ring (11Mm) 120-7400 2 Gasket-Head 120-7478 1 Cylinder Head No.1 ASM 120-7479 1 Cylinder Head No.2 ASM 119-5803 1 Case-Rocker (No.1) 119-5804 1 Case-Rocker (No.
Piston and Crankshaft Assembly Ref. 13001 13002 13008 13031 13251 92033 92151 3 Part Number Qty.
Valve and Camshaft Assembly Ref. 130 312 11055 12004 12005 12009 12011 12016 12032 13070 13116 13271 3402-120A Part Number Qty. Description 119-5845 4 Bolt-Flanged (8X14) 119-5846 4 Nut-Hex (6Mm) 119-5832 4 Bracket 120-7413 2 Valve-Intake 120-7414 2 Valve-Exhaust 108-2525 4 Retainer-Spring, Valve 95-9744 8 Collet 119-5835 4 Arm-Rocker 108-2527 4 Tappet 119-5836 1 Guide-Govenor 120-7415 4 Rod-Push 114-8671 1 Plate Ref.
Lubrication Equipment Assembly Ref. 555 670 13272 14075 16154 16154A 49065 49065A 59231 92066 92066A 92140 92145 92153 92153A 5 Part Number Qty.
Cooling Equipment Assembly Ref. 14037 49089 49089A 55020 59041 59066 92009 92039 92153 3402-120A Part Number Qty.
Electric Equipment Assembly Ref. 130 510 21066 21171 21193 26011 26031 26031A 7 Part Number Qty. Description 95-9893 4 Bolt-Flanged (6X20) KW10163 1 Key-Woodruff 120-7356 1 Regulator-Voltage 119-5872 2 Ignition Coil ASM 120-7491 1 Flywheel ASM 120-7492 1 Wire-Lead (L=95) 119-5876 1 Harness 120-7493 1 Harness Ref. 59031 92009 92066 92070 92072 92151 92172 92200 41 Part Number Qty.
Control Equipment Assembly Ref. 214 311 312 411 13107 13271 16171 39129 49103 3402-120A Part Number Qty. Description 115-6422 2 Screw-Pan (4X8) 114-8698 1 Nut-Hex (6Mm) 119-5894 2 Nut-Hex (5Mm) 115-6423 1 Washer-Plain (6Mm) 120-7428 1 Shaft 119-5883 1 Plate 120-7495 1 Link 120-7496 1 Spring-Governor 120-7431 1 Arm-Governor Ref. 49113 92145 92145A 92150 92151 92153 92153A 92170 42 Part Number Qty.
Carburetor Assembly Ref. 130 172 11061 11061A 11061B 11061C 13107 15004 16014 16020 16025 16030 16031 16041 16041A 9 Part Number Qty.
Air Filter and Muffler Assembly Ref. 461 11011 11013 11013A 11060 11061 16060 92015 92055 3402-120A Part Number Qty. Description 119-5962 4 Washer-Spring (8Mm) 120-7477 1 Case-Filter, Air 120-7501 1 Element-Filter, Air 120-7502 1 Element-Filter, Air 119-5948 2 Gasket-Muffler 115-6426 1 Gasket-Cleaner, Air 120-7450 1 Pipe-Intake 119-5954 2 Nut 120-7451 2 O-Ring Ref. 92066 92170 92173 92173A 92173B 92192 92192A 92210 92210A 44 Part Number Qty.
Fuel Pump and Filter Assembly Ref. 42036 49019 49040 92009 92170 92171 92192 92192A 92192B 11 Part Number Qty. Description 119-5963 1 Sleeve 121-4570 1 Filter-Fuel 119-5965 1 Pump-Fuel 119-5879 2 Screw 119-5967 6 Clamp 119-5968 1 Clamp 119-5969 1 Tube (6.35X12.7X185) 119-5970 1 Tube (6.4X12.7X150) 120-7516 1 Tube (6.35X12.
Starter Assembly Ref. 130 16146 16146A 21080 21163 27012 32085 59051 92093 92145 92154 92210 92210A 3402-120A Part Number Qty.
Label Set Ref. Part Number Qty.
Attachments and Accessories For 22973G TRX-20 Trencher Product Name Model/Part 8in Chain Conversion Kit for 36in Soil Chain.....................................................................................117-3480 Crumber Kit .......................................................................................................................................... 22477 24in X 4in Soil Chain...................................................................................................................
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