Page 1
Model 7500 Machine Serial # _____________ Engine Model & Spec # _____________ Engine Serial # _____________ Purchase Date _____________ Dealer _____________ Carlton J.P.Carlton Company Div. D.A.F. Inc. 121 John Dodd Road Spartanburg, SC 29303 Ph. (864) 578-9335 Fax (864) 578-0210...
Page 3
DIESEL ENGINE EXHAUST WARNING CALIFORNIA Proposition 65 Warning Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproduction harm.
Page 15
STUMP GRINDER LIMITED WARRANTY J.P. Carlton Co. Inc., hereafter referred to as the “Manufacturer”, warrants each new Carlton Grinder to be free of defects in workmanship and material for a period of one year. This warranty takes effect upon delivery to the original retail purchaser. The manufacturer, at its option, will replace or repair, at a point designated by the manufacturer, any parts which appear to have been defective in material or workmanship.
Page 17
The manufacturer will provide replacement parts at no cost to the customer for defective parts during the warranty period. Defective parts must be returned to J.P. Carlton Company. It will be the customers’ responsibility to install the replacement parts unless arrangements are made with the selling dealer.
Page 19
Warranty Validation Form Congratulations on your purchase of a Carlton Stump Grinder. This product has been designed and manufactured to provide years of profitable service while minimizing maintenance and downtime. Please take the time now to complete this warranty validation form. This information is necessary for Carlton to instate your warranty.
Slowly experiment with the controls and gradually work yourself up to the full capabilities of this machine. The Carlton® Model 7500 is a durable and profitable pro- fessional stump grinder. Read this manual, the engine manual and the safety and operational decals on the machine.
Any reference made to right, left, front or rear in relationship to the stump cutter is illustrated in the following picture. Please refer to these any time you call your dealer or J. P. Carlton Company for parts or assistance.
7500 SAFETY PRECAUTIONS Before operating the stump cutter, read this manual, the engine manual, and all the safety decals on the machine. Know all parts of the machine and their functions, especially the shut down procedures in case of emergency. No inexperienced person may operate machine.
Page 29
(i.e. clearing rocks, wood chips, etc.). • DO NOT modify or change any part without written approval from J. P. Carlton Company. • Do not ride, sit, stand, lay or climb anywhere on this machine during operation, while running, or during transport.
Page 30
Keep cutter wheel skirt guards in good condition to help control chips during grinding. • Keep safety and instructional decals clean and replace any that are damaged, difficult to read, or missing. Decals may be purchased from J.P. Carlton or an authorized dealer.
7500 DAILY CHECKLIST • Make sure safety pins and safety chock are in position before towing. Always crisscross safety chains when towing. • Check engine oil at dipstick. Add to full mark, if required. Engine must be level (see Machine Maintenance section).
7500 MACHINE CONTROLS ENGINE CONTROLS - Refer to engine manufacturers owners’ manual for controls, operation, and service. • Start the engine using the key switch OIL PRESSURE, OIL located on the lower left hand side of the TEMPERATURE, AND ALTERNATOR GAUGES swing-out control panel.
Page 33
7500 MACHINE CONTROLS SWING SPEED ADJUSTMENT • Adjust swing speed for smooth operation. Turn valve counter-clockwise to slow cutter head swing as engine speed increases. Close valve by turning clockwise to allow head to move side to side at low engine RPM.
Page 34
7500 MACHINE CONTROLS OPTIONAL REMOTE CONTROL REMOTE CONTROL MACHINE – TOGGLE SWITCHES OPERATION – WIRED • The control functions operate the same on a remote control machine as they do on a swing-out machine. Instead of having the machine mounted control...
Page 35
Contact your DRILL HOLES IN THE RIGHT SIDE OF THE COVER (SHOWN ABOVE) AND MOUNT THE RADIO CONTROL Carlton dealer if you need assistance not RECEIVER INSIDE. the radio control manufacturer. • The radio transmitter and receiver will be programmed at the factory when purchased as a set.
Page 36
7500 MACHINE CONTROLS OPERATION – WIRELESS • THE CUTTER WHEEL MUST BE DISENGAGED BEFORE STARTING BY-PASS THE MACHINE. SWITCH SWITCH • To start the engine and radio control transmitter, follow these instructions. • On the machine, turn the ignition key switch to ON and the engine switch to Remote On.
Page 37
7500 MACHINE CONTROLS PROGRAMMING – WIRELESS • If there is a problem with the receiver or the transmitter and either has to be replaced, you will need to program the new unit to communicate with the existing unit. Or if you have more than...
Page 38
7500 MACHINE CONTROLS TROUBLESHOOTING LOW BATTERY LIGHT SEE THE RADIO CONTROL MANUAL FOR ANY OPERATING PROBLEMS WITH THE RADIO RECEIVER & TRANSMITTER (Included in the back of this manual) • First check the batteries to make sure they are providing enough power to REMOVE THE BACK COVER TO ACCESS THE operate the transmitter.
7500 TOWING GUIDE SAFETY: NEVER ALLOW INEXPERIENCED DRIVERS TO TOW MACHINERY. Always make sure ball size is same size as coupler on equipment. • Always make sure safety pins and chock block are in place before towing. • Always make sure towing ball and hitch coupler are the same size and that they are not worn.
7500 MACHINE OPERATION STARTING - READ ENGINE MANUFACTURERS OWNERS’ MANUAL BEFORE STARTING. • Check all fluids before starting. • Drive belts must be disengaged before starting. • Inspect all connections, teeth, tires, etc. (See Daily Checklist). • Start engine at half speed and allow sufficient time for oil to circulate before proceeding.
Page 41
7500 MACHINE OPERATION • Lift boom and remove boom chock block. LIFT ENGINE SLIDE LOCK HANDLE • Reduce engine RPM to idle. • Raise cutter head clear of stump. • Engage cutter head drive belts by pushing down on engagement handle to relieve pressure on engine slide stop.
Page 42
7500 MACHINE OPERATION • Lower spinning cutter wheel to stump and make a few light passes at stump to get a feel for the cutting action. • Gradually increase cutting action and work away at stump by swinging cutter wheel left-to- right-to-left through stump in a sideways motion.
Page 43
7500 MACHINE OPERATION For optimal performance, the stump should be cut with the portion of the cutter wheel shown. NEVER UNDERCUT THE STUMP. Undercutting the stump can cause severe kickback, vibration and component damage. NEVER CUT THE STUMP FROM THE TOP.
7500 MACHINE MAINTENANCE SAFETY • NEVER SERVICE A MACHINE WITH THE ENGINE RUNNING, SEVERE PERSONAL INJURY COULD OCCUR. TURN ENGINE OFF THEN REMOVE IGNITION KEY AND DISCONNECT POSITIVE BATTERY CABLE TO AVOID STARTING MACHINE ACCIDENTALLY. • CUTTER WHEEL MUST BE DISENGAGED BEFORE TURNING ENGINE ON/OFF AND BEFORE SERVICING A MACHINE.
Page 45
7500 MACHINE MAINTENANCE • Check hydraulic oil tank. A sight glass is provided on the tank for easy viewing. Keep filled to proper level. • The machine is equipped with Citgo AW32 hydraulic oil at the time of manufacture. • To access the jackshaft bearings you will have to remove the jackshaft cover.
Page 46
7500 MACHINE MAINTENANCE • Check cutter wheel, pockets, and teeth for wear. If any repair is needed, see Servicing Cutter Wheel section for further instructions. DO NOT OPERATE STUMP CUTTER WITHOUT A COMPLETE SET OF TEETH. Always clean tip of grease gun fitting and grease fitting on machine before attaching hose to prevent dirt from being forced into machine parts.
Page 47
7500 MACHINE MAINTENANCE • Grease cutter wheel shaft bearings daily. These bearings should be purged using grease EVERYDAY. Purge until clean grease is seen. Use Texaco Starplex II ® grease. Wipe off excess grease. Excess grease will attract dirt. Always clean tip...
Page 48
7500 MACHINE MAINTENANCE • Grease bottom pivot hardened bushings weekly. Use Texaco Starplex II grease. ® Wipe off excess grease. Excess grease will attract dirt. The bottom pivot grease fittings (3) are located on the tongue below the battery box.
7500 LUBRICATION CHART • The model 7500, as well as all of our • A regularly scheduled maintenance machines, is built to be rugged performers. program will pay big dividends in machine Your new machine is sturdy and our design life, performance and avoided downtime.
7500 TROUBLESHOOTING GUIDE COMPLAINT CAUSE CORRECTION • Loose ground wire. • Clean and tighten. Engine will not start. (See Engine • Loose hot wire. • Clean and tighten. Manufacturers’ Manual for further • Dead battery. • Recharge or replace. information.) •...
Page 51
7500 TROUBLESHOOTING GUIDE COMPLAINT CAUSE CORRECTION • Belt not engaged. • Adjust yoke assembly. Cutter wheel stops turning. • Belt loose. • Tighten belt. • Engine belt broke. • Replace belt. • Poly Chain® belt broken. • Replace belt. • Sheared key in shaft.
Page 57
7500 LIGHTS & BRAKES ASSEMBLY ELECTRIC BRAKE ASSEMBLY ITEM NO PART NO DESCRIPTION 0550326 Backing plate assembly 0550327 Left hand actuating lever 0550328 Right hand actuating lever 0550224 Wire clip 0550225 Retractor spring 0550329 Shoe & lining kit 0550227 Adjuster assembly...
• PLACE THE CUTTER WHEEL ON THE GROUND WHEN PERFORMING SERVICE ON A MACHINE. • There are forty-eight (48) teeth to a complete set on the model 7500. Two (2) straights, twenty-three (23) left 45°’s and twenty-three (23) right 45°’s.
Page 60
7500 SERVICING CUTTER WHEEL TOOTH ARRANGEMENT • Inspect pockets, teeth and bolts for damage • Use anti-seize on threads to prevent bolts and replace as required. from “freezing up” in cutter wheel pockets. • When replacing pockets, always replace • When replacing complete set of teeth, be...
Page 61
Dura Disk II cutter wheel, there are eighty-four (84) teeth to a complete set. There are twenty (20) Short Plow Bolt Bits (Carlton part #04501311) and fifty-six (64) Plow Bolt Bits (Carlton part #0450130). • DO NOT OPERATE A MACHINE...
Page 62
It does not refer to the left side of the machine as described in the General Information section.) ROTATION It may be necessary to use a 1 1/4” CARLTON SP7500 TRIUMPTH MANUAL hole saw to remove debris around nut to make tooth removal easier.
Page 63
7500 SERVICING CUTTER WHEEL TOOTH SHARPENING Begin by chamfering shank back past edge of carbide. You do this because if it is not back far enough the shank will hit the stump and not the carbide, thus causing a lot of vibration. Once the shank is angled far enough back, then begin sharpening carbide.
7500 SERVICING HYDRAULICS SAFETY • NEVER SERVICE A MACHINE WITH THE ENGINE RUNNING, SEVERE PERSONAL INJURY COULD OCCUR. TURN ENGINE OFF THEN REMOVE IGNITION KEY AND DISCONNECT POSITIVE BATTERY CABLE TO AVOID STARTING MACHINE ACCIDENTALLY. • CUTTER WHEEL MUST BE DISENGAGED BEFORE TURNING ENGINE ON/OFF AND BEFORE SERVICING A MACHINE.
Page 65
7500 SERVICING HYDRAULICS REPLACING ROD ENDS • Should a rod end need replacing, loosen through bolt clamping rod end to cylinder rod and unscrew rod end. • Reverse process to install new rod end. Tighten through bolt and use new cotter pins, and cylinder pins.
7500 SERVICING BOOM PIVOT SAFETY • NEVER SERVICE A MACHINE WITH THE ENGINE RUNNING, SEVERE PERSONAL INJURY COULD OCCUR. TURN ENGINE OFF THEN REMOVE IGNITION KEY AND DISCONNECT POSITIVE BATTERY CABLE TO AVOID STARTING MACHINE ACCIDENTALLY. • CUTTER WHEEL MUST BE DISENGAGED BEFORE TURNING ENGINE ON/OFF AND BEFORE SERVICING A MACHINE.
7500 SERVICING BELTS Replacing V-Belt SAFETY • NEVER SERVICE A MACHINE WITH THE ENGINE RUNNING, SEVERE PERSONAL INJURY COULD OCCUR. TURN ENGINE OFF THEN REMOVE IGNITION KEY AND DISCONNECT POSITIVE BATTERY CABLE TO AVOID STARTING MACHINE ACCIDENTALLY. • CUTTER WHEEL MUST BE DISENGAGED BEFORE TURNING ENGINE ON/OFF AND BEFORE SERVICING A MACHINE.
Page 68
7500 SERVICING BELTS Replacing V-Belt • Remove and replace the engine belt. • If you have difficulty replacing the new belt, you may need to relieve some of the tension that was applied to the old belt. Read the information on adjusting tension below and loosen the belt tension.
Page 69
7500 SERVICING BELTS Replacing V-Belt • When adjusting engine belt tension, you will also have to adjust the engine slide stop. Shorten engine slide handle as you lengthen the linkage assembly. • Loosen the jam nut and turn the handle one turn and check to see if the engine is locked in the disengaged position.
Page 70
7500 SERVICING BELTS ® Replacing Poly Chain Belt SAFETY • NEVER SERVICE A MACHINE WITH THE ENGINE RUNNING, SEVERE PERSONAL INJURY COULD OCCUR. TURN ENGINE OFF THEN REMOVE IGNITION KEY AND DISCONNECT POSITIVE BATTERY CABLE TO AVOID STARTING MACHINE ACCIDENTALLY.
Page 71
7500 SERVICING BELTS ® Replacing Poly Chain Belt • Loosen Poly Chain ® belt by moving jackshaft bearings back toward rear of machine. MARK THE JACKSHAFT BEARINGS SO THAT YOU KNOW WHERE THEY ARE POSITIONED ON THE JACKSHAFT PLATE. Loosen, do not remove, the four bolts that hold the jackshaft bearings down.
Page 72
7500 SERVICING BELTS ® Replacing Poly Chain Belt • Remove old belt and replace with new one. • Replace the belt over the jackshaft sprocket first. Put the cutter wheel sprocket and the Poly ® Chain belt on the cutter wheel shaft at the same time, with the sprocket inside the belt.
Page 73
7500 SERVICING BELTS ® Replacing Poly Chain Belt • To tighten the belt more if needed, loosen the front bolts and tighten each of the back jam bolts the same number of revolutions, to keep the alignment true. Make only slight adjustments at a time and recheck tension;...
• PLACE THE CUTTER WHEEL ON THE GROUND WHEN PERFORMING SERVICE ON A MACHINE. In all Carlton® model Stump Grinders, you will find link belt bearings that are made to be purged with grease. It is necessary to purge these bearings everyday until clean grease is seen.
Page 76
7500 SERVICING BEARINGS Replacing Jackshaft Bearings • Remove the Poly Chain guard cover and ® bottom cover. Follow the instructions in the Servicing Belts section to remove the Poly Chain belt. ® SPROCKET • Measure the distance from the jackshaft end to the bushing to place the bushing in the same place on the new shaft.
Page 77
7500 SERVICING BEARINGS Replacing Jackshaft Bearings • Remove the four bolts holding the jackshaft bearings in place. Remove old bearings and shaft. • Replace with new bearings and shaft. Be sure to turn the end of the jackshaft with the longest...
Page 78
7500 SERVICING BEARINGS Replacing Jackshaft Bearings • Replace the Poly Chain belt. Follow the ® instructions in the Servicing Belts section for replacing the Poly Chain belt. DO NOT ® ADJUST THE BELT TENSION AT THIS TIME. • The cutter wheel sprocket will be replaced when replacing the belt.
Page 79
7500 SERVICING BEARINGS Replacing Jackshaft Bearings • Line the jackshaft pulley up with the engine pulley using a straight edge. • When the pulleys are aligned, tighten the screws in the jackshaft pulley. Recheck the alignment to be sure nothing changed. Torque the screws in the jackshaft pulley to 30 ft.
Page 80
7500 SERVICING BEARINGS Replacing Jackshaft Bearings • There are two setscrews in each bearing lock collar. Tighten one setscrew in each collar and remove the other setscrew. Punch a start point in the shaft and drill 3/8” diameter hole in jackshaft just deep enough for setscrew to enter shaft.
Page 81
• PLACE THE CUTTER WHEEL ON THE GROUND WHEN PERFORMING SERVICE ON A MACHINE. In all Carlton® model Stump Grinders, you will find link belt bearings that are made to be purged. It is necessary to purge these bearings everyday until clean grease is seen. CAUTION should be taken not to allow grease to build up inside the belt guards.
Page 82
7500 SERVICING BEARINGS Replacing Cutter Wheel Bearings • Loosen the setscrews in the locking collars of the bearings. You may need to heat bearing collar to loosen the LocTite that was used during assembly. • To remove the bearings from the cutter wheel shaft, use a steel hammer to strike the bearing housing until it cracks and breaks apart.
Page 83
7500 SERVICING BEARINGS Replacing Cutter Wheel Bearings • Replace the Poly Chain belt. Follow the ® instructions in the Servicing Belts section for replacing and tensioning the Poly Chain belt. ® NOTE: Refer to SERVICING BELTS section for proper installation and tensioning of all belts.
7500 SERVICING STUB SHAFT SAFETY • NEVER SERVICE A MACHINE WITH THE ENGINE RUNNING, SEVERE PERSONAL INJURY COULD OCCUR. TURN ENGINE OFF THEN REMOVE IGNITION KEY AND DISCONNECT POSITIVE BATTERY CABLE TO AVOID STARTING MACHINE ACCIDENTALLY. • CUTTER WHEEL MUST BE DISENGAGED BEFORE TURNING ENGINE ON/OFF AND BEFORE SERVICING A MACHINE.
Page 85
7500 SERVICING STUB SHAFT REMOVE BOLTS AND • Next you will need to remove the SCREW INTO EXTRA HOLES jackshaft pulley. Remove the bolts in the jackshaft bushing and screw them back into the empty threaded holes to push the pulley off the bushing and remove the bushing and pulley.
Page 86
7500 SERVICING STUB SHAFT • You can now remove the bearing supported stub shaft plate. Remove the bolts holding the shaft plate to the engine. There are eleven 10MM bolts to remove. Pull the plate straight off. • There are two threaded holes that can be used to push the shaft plate off the engine mount.
Page 87
7500 SERVICING STUB SHAFT • Replace any parts found defective or worn. Put stub shaft coupling plate onto the flywheel. The plate is attached using eight 10MM-1.5 x 20MM bolts with a ® lock washer. Put LocTite 242 (blue) on the end of the bolt and lightly tighten all bolts.
Page 88
7500 SERVICING STUB SHAFT • Bolt grease fitting to the air filter bracket. • Before starting the engine, apply grease to the grease fitting until the pin on the opposite side of the stub shaft pops out (see Machine Maintenance section for more information).
7500 HYDRAULIC ASSEMBLY REMOTE CONTROL HYDRAULIC ASSEMBLY ITEM NO DESCRIPTION PART NO 0300150A 3 Station Remote Manifold 0300142 Hydraulic Pump - Tow Behinds 0300105H Hydraulic Cylinder - 3 x 60 0300105L Hydraulic Cylinder - 4 x 12 0300105J Hydraulic Cylinder - 3 1/2 x 8 0300135C Filter Head –...
Page 90
7500 HYDRAULIC ASSEMBLY REMOTE CONTROL HYDRAULIC ASSEMBLY...
Page 91
7500 HYDRAULIC ASSEMBLY REMOTE MANIFOLD ASSEMBLY ITEM NO DESCRIPTION PART NO 0300150A 3 Station Remote Manifold 0300150AB Rexroth Solenoid Valve - DO3 0300150AA Swing Speed Control Cartridge 0300120A C/B Cartridge Valve – CBCG-LKN Relief Cartridge Valve – Sun Lift Speed Adjustment - NCCB-KAN...
Page 92
7500 HYDRAULIC ASSEMBLY SWING OUT CONTROLS HYDRAULIC ASSEMBLY ITEM NO PART NO DESCRIPTION 0300130 Hydraulic Control Valve 0300142 Hydraulic Pump – Tow Behinds 0300105H Hydraulic Cylinder - 3 x 60 0300105L Hydraulic Cylinder - 4 x 12 0300105J Hydraulic Cylinder - 3 1/2 x 8 0300135C Filter Head –...
Page 93
7500 HYDRAULIC ASSEMBLY SWING OUT CONTROLS HYDRAULIC ASSEMBLY...
Page 94
7500 HYDRAULIC ASSEMBLY LIFT CYLINDER ASSEMBLY – 4 x 12 (Assembly Part # 0300105L) ITEM NO DESCRIPTION PART NO Body Assembly Lock Nut 1 1/4”-12 Crown Seal Piston O-Ring Piston Rod O-Ring Bu-Washer Square Retaining Ring U-Cup End Cap Rod Wiper 030015S Prince Cyl.
Page 95
7500 HYDRAULIC ASSEMBLY SWING CYLINDER ASSEMBLY – 3 1/2 x 8 (Assembly Part # 0300105J) ITEM NO PART NO DESCRIPTION Body Assembly Lock Nut 1”-14 Crown Seal Piston O-Ring Piston Rod O-Ring Bu-Washer Square Retaining Ring U-Cup End Cap Rod Wiper 0300105S Prince Cyl.
Page 96
7500 HYDRAULIC ASSEMBLY TONGUE CYLINDER ASSEMBLY – 3 x 60 (Assembly Part # 0300105H) ITEM NO PART NO DESCRIPTION Body Assembly Lock Nut 1”-14 Piston Ring O-Ring Bu-Washer Piston O-Ring Piston Rod Bu-Washer Snap Ring Quad Ring Bu-Washer End Cap/Gland...
Page 97
7500 HYDRAULIC ASSEMBLY HYDRAULIC PUMP ASSEMBLY – (Part # 0300142) ITEM NO PART NO DESCRIPTION 0300170 Bolts 0300171 Dowel Pins 0300172 Snap Ring 0300173 Front Plate 0300174 Back Plate 0300175 Bearing Case Assembly 0300176 Pump Body 0300177 Drive Gear 0300178...
Page 102
7500 FRAME ASSEMBLY SWING OUT BOOM ASSEMBLY ITEM NO PART NO DESCRIPTION 4100245 Swing Out Boom Weldment 0400210 Rubber Molding for Swing Out 9 ft. 0400300 Lexan - 3/16x20 1/4x32 1/4 3500273 Swing Out Boom Skirt 3500272 Skirt Bracket 0150117 3/8-16 x 1”...
Page 103
7500 FRAME ASSEMBLY SWING OUT BOOM ASSEMBLY...
® 7500 POLY CHAIN BELT ASSEMBLY ITEM NO PART NO DESCRIPTION 7200204 PC Guard Cover - 7500 0400115 PC 6800 7200 7500 7200200 PC Guard - 7500 7200208 PC Guard Bottom 0150103 3/8-16 x 1 HCS 0150303 3/8 Flat Washer...