Page 1
OWNERS MANUAL 8/1/08 MANUAL NO. 681136 IMPORTANT-KOYKER DEALER BE SURE THIS MANUAL IS GIVEN TO THE PURCHASER FOR FUTURE REFERENCE KOYKER MANUFACTURING CO., P.O. BOX 409 LENNOX, SD 57039 Phone 1-800-456-1107 E-mail koyker@koykermfg.com...
-Rounded Back Bucket -Soft Ride Nitrogen Accumulator Koyker Manufacturing Inc. has created one of the best loaders in the market through consumer research, product testing and by using the latest technological enhancements to deliver what you’ve been asking for… a loader that will get the job done with ease.
SAFETY ALERT SYMBOL The symbol shown below is used to call your attention to instructions concerning your personal safety. Watch for this symbol it points out important safety precautions. It means ATTENTION! Become Alert! Your Personal Safety Is Involved! Read the message that follows and be alert to the possibility of personal injury or death. DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury.
SAFETY Improper use of a loader can cause serious injury or death. The following safety precautions, and those given on the tractor mount installation instructions, should be thoroughly understood before attempting to operate this machine. BEFORE OPERATING: Carefully study and understand this manual, the specific tractor mount instructions, and the attachment(s) manual(s).
Page 6
SAFETY CONTINUED Transport the machine load at the slowest speed possible and with the loader boom at the lowest transport position to avoid tipping or upsetting, which may result in serious injury or death. Be extremely careful when working on inclines or near loose fill, rocks, and holes as they can cause tipping or upsetting which may result in serious injury or death.
Page 7
1. Move Slowly! 2. Always use care and common sense! 3. Be careful for your own sake and for that of others! 4. Koyker Mfg. Co. includes all reasonable means for accident prevention except a safe and careful operator. FIG. 5-1...
TRACTOR & SAFETY POINTERS The use of good judgment and common sense is necessary by the operator in using this loader. The front and rear wheels should be set for the widest wheel tread to assure best stability. Use extra caution when rear wheel weights and tire ballast are added to a loader-equipped tractor.
ATTACHING LOADER IMPORTANT: Never attempt loader attachment on grades which are not reasonably level. 1. Check to be sure that the surfaces of the mounts are free of obstructions. (Fig 8-1) 2. Drive the tractor slowly and carefully in between the loader arms only far enough to permit hook-up of the hydraulic system hoses.
ATTACHING BUCKET Prior to attaching the bucket, prepare the adapter for engagement by pulling the adapter handle back (towards the operator) into it’s cocked position. With the bucket positioned on level ground, tilt the bucket adapter forward approximately 45º. (Fig 9-1) Slowly drive forward into the bucket, centering the adapter with the bucket as you go and position the top mount bar of the adapter just below the hooks on the back side of the bucket.
DETACHING LOADER IMPORTANT: Never attempt loader attachment on grades which are not reasonably level. Raise loader frame slightly to permit loader stand reengagement. (Fig. 10-1) Lower bucket to ground and tip slightly forward to apply pressure to mount connection. Note: This will prevent the loader from inadvertently rocking forward when the mount pins are removed and uprights are disengaged from it’s cradle.
DETACHING BUCKET Prior to detaching the bucket, prepare the adapter for disengagement by pulling the adapter han- dle back (towards the operator) into its unlocked position (Fig 11-1 & Fig 11-2). The bucket should be resting on level ground. Slowly lower and dump your way out of the bucket (Fig 11-3). Slowly back away from the bucket until you are clear of the bucket and safe to maneuver (Fig 11-4).
Page 14
OPERATION WARNING: Never allow anyone to operate the loader until they have carefully reviewed and understood this owners manual. FILLING THE BUCKET: When material is piled on a slope, it is best to drive tractor up the slope straight into the pile. Operating sideways on a slope has a tendency to tip the loading unit.
Page 15
OPERATION CONTINUED SOFT RIDE FEATURE: The soft ride feature was designed to diminish the stresses on the tractor, mounts, loader and operator while transporting heavy loads to and from the field. The soft ride feature incorporates a pre-charged nitrogen accumulator to act as a shock absorber similar to that of an automobile. While in operation the loader may feel “squishy”...
*Specifications based on ASABE standards S301.3 (Front-End Agricultural Loader Ratings) The above information is based on testing done by Koyker Mfg. Variations in maximum lift height and other specs for different tractors are due to tire sizes, variations in loader mounting locations and hydraulic system efficiency.
LOADER INSPECTION, SERVICE, AND MAINTENANCE Lower the bucket to the ground, shut off tractor engine, and relieve the pressure in the hydraulic system before adjusting, lubricating, or servicing the loader. Periodically check all bolts for looseness and re-torque if necessary. Before storage, be certain all hydraulic cylinders are fully collapsed so that the rod will not be exposed to the elements or damaged.
PARTS IDENTIFICATION SCHEDULE PART NUMBER DESCRIPTION 640028 SCREW - .375 - 16 X 1.00 GR5 HHC 640032 SCREW-.375-16 X 1.25 GR 5 HHC 640034 SCREW-.375-16 X 1.50 GR 5 HHC 640089 SCREW.625-11 X 5.00 GR 8 HHC 640141 NUT - .625-11 GR 5 CENTER LOCK 640153 WASHER - 3/8"...
Page 22
BUSHING 1.50 X 4.63 NYL 681071 BUSHING 1.50 X 1.00 NYL 681072 BUSHING 1.50 X 3.00 NYL 681090 PRO 2785 DECAL - RED AND BLACK 680287 PRO 2785 DECAL - GREEN AND YELLOW 681142 OIL LINE COVER 681165 CLEVIS PIN 3/4" DIA X 2"...
BUCKET PARTS IDENTIFICATION SCHEDULE Optional Euro Buckets with Bolt-on Blade & Clevis 8 1/2' Euro Bucket With Grapple ITEM NO. PART NO. DESCRIPTION QTY. 679767 8 1/2' EURO BUCKET WLDT 679772 8 1/2' BOLT ON BUCKET BLADE (PAINTED) 672852 BUCKET CLEVIS 673286 SLING LINK 673366...
Page 27
BUCKET PARTS IDENTIFICATION SCHEDULE (Cont’) Optional Euro Buckets with Bolt-on Blade & Clevis 8 1/2' Euro Bucket Non Grapple ITEM NO. PART NO. DESCRIPTION QTY. 679422 8 1/2' EURO BUCKET WLDT (NON GRPL) 679722 8 1/2' BOLT ON BUCKET BLADE (PAINTED) 672852 BUCKET CLEVIS 673286...
MANUAL ACCUMULATOR KIT PARTS IDENTIFICATION KIT NUMBER 681530 PART NUMBER DESCRIPTION 653624 HYD FITTING 8ORM-8FJX 679792 #8 HYD TEE 682690 PLATE-BRACKET SOFT BRACKET 640956 SCREW-.250-20 X 3.00 GR 5 HHC 640149 WASHER - 1/4" SPRING LOCK 654453 NUT - .250-20 GR 2 LOCK NYLON INSERT 675463 HOSE-.5-18 8FJX-8MJX 679791...
ELECTRIC ACCUMULATOR KIT PARTS IDENTIFICATION KIT NUMBER 681163 PART NUMBER DESCRIPTION 682690 PLATE-BRACKET SOFT BRACKET 653624 HYD FITTING 8ORM-8FJX 679792 #8 HYD TEE 640956 SCREW-.250-20 X 3.00 GR 5 HHC 640149 WASHER - 1/4" SPRING LOCK 654453 NUT - .250-20 GR 2 LOCK NYLON INSERT 681181 MANIFLOD BLOCK ASSY 679726...
CYLINDERS IMPORTANT: Read these service tips before beginning assembly of cylinder gland or piston. 1. Keep seals clean from the time they are removed from package until they are installed. 2. Clean the groove or bore into which the seal is to be fitted before installing the seal. 3.
HYDRAULIC SYSTEM The hoses from the tractor valves are attached to the oil lines which are on the inside of the loader main frame. Re-check all joints to prevent leakage after loader is mounted and in operation. KEEP SYSTEM CLEAN - USE ONLY CLEAN OIL CAUTION! It is of utmost importance that the hydraulic system of this loader be kept free from dirt and foreign matter.
3 1/4” CYLINDER SERVICE KITS WITH 1 3/4” SHAFT KIT NO. 681616: Complete kit with all seals needed to service one (1) 3 1/4” Cylinder. Consists of: 1 each 3 1/4” Gland “O” Ring 1 each 3 1/4” Backup Ring 1 each 1 3/4”...
3 1/2” CYLINDER SERVICE KITS WITH 2” SHAFT KIT NO. 681555: Complete kit with all seals needed to service one (1) 3 1/2” Cylinder. Consists of: 1 each 3 1/2” Gland “O” Ring 1 each 3 1/2” Backup Ring 1 each 2”...
CYLINDER GLAND SERVICE DIAGRAM Note: To install rod wiper and U-cup seal, fold All gland seals shown with a section removed to facilitate correct installation. similar to shape shown below, slip into gland ROD WIPER bore and locate each in its respective groove. Tools are used to fold seals, take care not to damage sealing surfaces.
(1) year from the sale to the original purchaser. Any defective cylinder reported to Koyker within one (1) year from the sale by the dealer to the original purchaser may be repaired or replaced after Koyker’s inspection and approval. In such case, notify a Koyker dealer for proper instructions.
Page 40
Koyker; rental charges of any substitute equipment; expenses due to lost, damaged, or delayed products or parts resulting from acts beyond the control of Koyker; and personal injury or death of operator or bystanders by misappropriated use of Koyker products or parts.
Page 41
2. For surface wear, scheduled maintenance parts, and other items that Koyker deems expendable. 3. If products or parts not manufactured by Koyker or approved by Koyker are connected to or used in conjunction with the Koyker products or parts and if Koyker deems the non-Koyker products or parts affect the performance, safety, reliability, or life of the Koyker products or parts.
Page 42
TORQUE SPECIFICATIONS 1. Tightening Bolts & Nuts Check all loader bolts and nuts for tightness every 50 working hours. The movement of the loader over rough terrain may cause bolts to come under pressure and over a long period of time some slight stretching of the bolt may occur.