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Groundsmaster 4100--D Lower Cutting Deck (LH Deck Shown) Working Pressure Low Pressure (Charge) Return or Suction Flow CENTER DECK MANIFOLD M1 RV1 P1 RV2 LC1 S M2 LC2 P2 LH WING DECK MANIFOLD M1 RV1 P1 RV2 LC1 S M2 LC2 P2 OR M1 M2 ST L RH WING DECK MANIFOLD M1 RV1 P1 RV2 LC1 M2 LC2 S P1 T P2 P2 OR FAN DRIVE MANIFOLD 4WD MANIFOLD COUNTERBALANCE MANIFOLD Hydraulic System Page 4 - 14 Groundsmaster 4100--D
Lower Cutting Deck A four section gear pump is coupled to the piston (traction) pump. The third gear pump section supplies hydraulic flow to both the lift/lower control valve and the steering control valve. Hydraulic flow from this pump section is delivered to the steering and lift/lower circuits through a proportional flow divider that is located in the fan drive manifold. This pump section takes its suction from the hydraulic reservoir. When the cutting deck is in a stationary position, flow from the gear pump is by--passed through the lift/lower control valve, counterbalance manifold, oil filter and traction charge circuit. To lower the cutting deck, the center lift lever on the lift/ lower control valve is pushed to allow valve shift in the lift/lower control. This valve change allows a passage for oil flow from the rod end of the front deck lift cylinders. The weight of the cutting deck causes the lift cylinders to extend, and lower the cutting deck. Oil from the rod end of the cylinders is allowed to return to the traction charge circuit. When the lift lever is released, the lift cylinders and cutting deck is held in position. The drop speed of the front cutting deck is regulated by an adjustable flow control valve that is located in the hydraulic lines between the lift/lower control valve and the deck lift cylinders. To lower a wing deck, the appropriate lift lever on the lift/ lower control valve is pushed to allow valve shift in the lift/lower control valve. This valve change causes a valve shift in the counterbalance manifold and oil flow to the barrel end of the lift cylinder. Higher hydraulic pressure against the barrel end of the cylinder causes the cylinder shaft to extend, and lower the wing deck. Oil from the piston end of the cylinder returns to the traction charge circuit. When the lift lever is released, the lift cylinder and wing deck is held in position. An adjustable counterbalance valve (CB) in the counterbalance manifold maintains back pressure on the deck lift cylinders to allow some of the cutting deck weight to be transferred to the traction unit to improve traction. A relief valve located in the lift/lower control valve limits lift/ lower circuit pressure to 1500 PSI (103 bar). Excess circuit flow is routed to the oil filter and then to the traction charge circuit. Hydraulic System Groundsmaster 4100--D Page 4 - 15 Hydraulic System
Page 1 and 2: Part No. 08162SL (Rev. A) Service M
Page 3 and 4: Table Of Contents Chapter 1 - Safet
Page 5 and 6: Table of Contents GENERAL SAFETY IN
Page 7 and 8: Maintenance and Service 1. Before s
Page 9 and 10: Safety and Instruction Decals Numer
Page 11 and 12: Chapter 2 Table of Contents Product
Page 13 and 14: Torque Specifications Recommended f
Page 15 and 16: Standard Torque for Dry, Zinc Plate
Page 17 and 18: Chapter 3 Kubota Diesel Engine Tabl
Page 19 and 20: Specifications Item Make / Designat
Page 21 and 22: Removal (Fig. 1) 1. Park machine on
Page 23 and 24: Removal (Fig. 5) CAUTION B The muff
Page 25 and 26: DANGER Because diesel fuel is highl
Page 27 and 28: Removal (Fig. 8) 1. Park machine on
Page 29 and 30: Engine Removal (Fig. 9) 1. Park mac
Page 31 and 32: 3. Slowly lower engine into the mac
Page 33 and 34: Coupler Removal (Fig. 16) NOTE: The
Page 35 and 36: Chapter 4 Hydraulic System Table of
Page 37 and 38: General Information Operator’s Ma
Page 39 and 40: Hydraulic Hose and Tube Installatio
Page 41 and 42: Adjustable Fitting (Fig. 8) 1. Make
Page 43 and 44: Hydraulic System This page is inten
Page 45 and 46: Traction Circuit: 4WD (Mow) The tra
Page 47: Traction Circuit: Transport (2WD) T
Page 51 and 52: Raise Cutting Deck A four section g
Page 53 and 54: Mow Circuit Hydraulic flow for the
Page 55 and 56: Hydraulic System This page is inten
Page 57 and 58: Steering Circuit A four section gea
Page 59 and 60: Engine Cooling Fan Circuit A four s
Page 61 and 62: Hydraulic Test Fitting Kit This kit
Page 63 and 64: Problem Traction power is lost or u
Page 65 and 66: Testing The most effective method f
Page 67 and 68: Procedure for Traction Circuit Char
Page 69 and 70: Procedure for Traction Circuit Reli
Page 71 and 72: Procedure for Counterbalance Pressu
Page 73 and 74: Procedure for Rear Traction Circuit
Page 75 and 76: Procedure for Traction Circuit Redu
Page 77 and 78: Procedure for Cutting Deck Circuit
Page 79 and 80: Procedure for Cutting Deck Manifold
Page 81 and 82: Procedure for Cutting Deck Gear Pum
Page 83 and 84: Procedure for Cutting Deck Motor Ca
Page 85 and 86: Procedure for Steering Circuit Reli
Page 87 and 88: Procedure for Lift/Lower Circuit Re
Page 89 and 90: Procedure for Steering and Lift/Low
Page 91 and 92: Procedure for Engine Cooling Fan Ci
Page 93 and 94: Procedure for Engine Cooling Fan Ci
Page 95 and 96: Service and Repairs General Precaut
Page 97 and 98: Charge Hydraulic System NOTE: When
Page 99 and 100:
NOTE: The front frame needs to be l
Page 101 and 102:
Removal (Fig. 48) CAUTION The radia
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Removal (Fig 49) 1. Park machine on
Page 105 and 106:
IMPORTANT: Use caution when clampin
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Hydraulic System This page is inten
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Removal (Fig. 53) 1. Park machine o
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Removal (Fig. 59) NOTE: The ports o
Page 121 and 122:
4WD Manifold Service (Fig. 60) 1. M
Page 123 and 124:
Removal (Fig. 61) 1. Read the Gener
Page 125 and 126:
Filter Manifold Service (Fig. 62) F
Page 127 and 128:
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Page 131 and 132:
CAUTION The centering springs are u
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Disassembly (Fig. 68) 1. Pump oil o
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8. Remove and discard back--up gask
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Page 145 and 146:
Fan Drive Manifold Service (Fig. 76
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Cutting Deck Motor Removal 1. Park
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IMPORTANT: Mark the relative positi
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Removal (Fig. 85) NOTE: The ports o
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PTO Manifold Service (Fig. 86) For
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Disassembly (Fig. 89) 1. Plug all p
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Disassembly (Figs. 92 and 93) 1. Re
Page 169 and 170:
Page 171 and 172:
Chapter 5 Electrical System Table o
Page 173 and 174:
Special Tools Order special tools f
Page 175 and 176:
Troubleshooting CAUTION Remove all
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Cutting Deck Operating Problems The
Page 179 and 180:
Adjustments Wing Deck Position Swit
Page 181 and 182:
Component Testing For accurate resi
Page 183 and 184:
Warning Lights Engine Oil Pressure
Page 185 and 186:
Transport / 4WD Switch The transpor
Page 187 and 188:
Seat Switch The seat switch is norm
Page 189 and 190:
Hour Meter The hour meter is locate
Page 191 and 192:
Start, Engine Shutdown, Seat, Alarm
Page 193 and 194:
TEC -5002 Controller Groundsmaster
Page 195 and 196:
Fuel Gauge The fuel gauge can be te
Page 197 and 198:
Glow Controller The glow controller
Page 199 and 200:
Dual Temperature Switch The dual te
Page 201 and 202:
Traction Neutral Switch The tractio
Page 203 and 204:
Fusible Links The Groundsmaster 410
Page 205 and 206:
Cutting Deck Raise and Lower Switch
Page 207 and 208:
Service and Repairs NOTE: For engin
Page 209 and 210:
2. Conduct a hydrometer test of the
Page 211 and 212:
Chapter 6 Axles, Planetaries and Br
Page 213 and 214:
General Information Operator’s Ma
Page 215 and 216:
3. Chock rear wheels and jack up fr
Page 217 and 218:
This page is intentionally blank. A
Page 219 and 220:
Removal (Fig. 6) 1. Park machine on
Page 221 and 222:
NOTE: The planetary wheel drive ass
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This page is intentionally blank. A
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8. Remove cap screw and flange nut
Page 227 and 228:
Bevel Gear Case and Axle Case The f
Page 229 and 230:
Bevel Gear Case and Axle Case Insta
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9. Remove the bevel gear case/axle
Page 233 and 234:
Axle Shafts The following procedure
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7. Secure the lock nut with the sta
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Differential Gear Inspection 1. Mea
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Pinion Gear to Ring Gear Engagement
Page 241 and 242:
Chapter 7 Chassis Table of Contents
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Disassembly (Fig. 1) 1. Park machin
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CAUTION When changing attachments,
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Removal (Fig. 5) 1. Park machine on
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Disassembly (Fig. 8) 1. Disassemble
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NOTE: Most of the seat suspension c
Page 253 and 254:
Removal 1. Park machine on a level
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Chapter 8 Cutting Deck Table of Con
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General Information CAUTION Never i
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This page is intentionally blank. C
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Removal (Fig. 1) 1. Position machin
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Removal (Fig. 6) 1. Position machin
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Cutting Deck Link Service Disassemb
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Installation (Fig. 13) 1. Position
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2. Install outer bearing spacer int
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Disassembly (Fig. 22) 1. Park machi
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Chapter 9 Foldout Drawings Table of
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CENTER DECK MANIFOLD COUNTERBALANCE
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CONTINUES FROM SHEET 1 CONTINUES FR
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CONTINUES TO SHEET 2 CONTINUES TO S
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CONTINUES TO SHEET 2 WHEN THE PTO S
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CONTINUES TO SHEET 2 CONTINUES TO S
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YELLOW GRAY YELLOW/BLACK VIOLET WHI
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FLOW DIVIDER SOLENOID Groundsmaster
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(STARTER) (STARTER) (STARTER) Groun
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BLUE GRAY VIOLET BLACK YELLOW GRAY
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