Koyker C185 User manual

OWNERS MANUAL
MANUAL NO. 679635
LOADER
IMPORTANT-KOYKER DEALER
BE SURE THIS MANUAL IS GIVEN TO THE
PURCHASER FOR FUTURE REFERENCE
KOYKER MFG. CO., P.O. BOX 409,
LENNOX, SD 57039
Phone [phone] E-mail [email protected]
9/05/07
C185

CONTENTS PAGE
Introduction.............................................................................................................................................1
SAFETY INFORMATION
Safety Alert Symbol ...............................................................................................................................2
Safety Information ..............................................................................................................................3 - 5
Safety Decals..........................................................................................................................................6
Tractor & Safety Pointers.......................................................................................................................7
ASSEMBLY INSTRUCTIONS
Attaching Loader....................................................................................................................................8
Attaching Bucket……………………………………………………………………………………….9
Detaching Loader...................................................................................................................................10
OPERATING INSTRUCTION
Operation ...............................................................................................................................................11
SERVICE AND MAINTENANCE
Specifications.........................................................................................................................................12
Loader Inspection, Lubrication and Maintenance.................................................................................13
Hydraulic System Parts Schedule and Diagram....................................................................................14
Loader Parts Diagram............................................................................................................................15
Loader Parts Schedule…………………………………………………………………………………16-17
Skid Steer Parts Schedule & Diagram ..................................................................................................18
Hydraulic Cylinder Information............................................................................................................19
2 1/4” Cylinder Service Kits..................................................................................................................20
Hydraulic Cylinder Parts Schedule........................................................................................................21
Hydraulic Cylinder Parts Diagram ........................................................................................................22
Cylinder Gland and Piston Service Diagram ........................................................................................23
Dinoil Valve Hookup…………………………………………………………………………………..24
LIMITED WARRANTY INFORMATION
Limited Warranty………………………………………………………………………………….25-27
TORQUE SPECIFICATIONS
Torque Specifications............................................................................................................................28
CONTENTS

INTRODUCTION
For years, Koyker Manufacturing Company of Lennox, South Dakota, has provided the farm loader
industry with innovative ideas for a more efficient and dependable means of material handling. Now,
Koyker has again met the challenge and provided the market with a loader that will allow the efficient use
of tractors in material handling. The new KOYKER C185 Loader provides you with state-of-the-art
design and innovation for your material handling chores.
Features such as quality construction, ease of maintenance, and high performance operating capacities, all
at a low price, making the new C185 Loader one of the most efficient loaders ever. With proper care and
handling, it will provide many years of dependable service.
This manual is designed to provide you with important information regarding the basic loader and bucket.
Our sincere intent, in providing this manual, is to help you or those involved better understand the machine
and to prevent accidents.
Should you have any questions, comments, improvements, or suggestions regarding the contents of any of
the manuals provided, please contact Koyker Manufacturing Company (800-456-1107 or E-mail
[e-mail]).
We care about your safety!
Remember ALL safety decals are no charge from the factory. Please replace all safety decals if
damaged or missing. Your safety is important to us.
Page 1

SAFETYALERT 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.
WARNING: Indicates a potentially hazardous situation that, if not avoided, could result in death or
serious injury.
CAUTION: Indicates a potentially hazardous situation that, if not avoided may result in minor or
moderate injury.
WARNING!
Anyone who will operate or work around a front-end loader should first read this manual.
Page 2

SAFETY INFORMATION
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).
Prior to operation, inspect the loader for system leaks and damaged, missing, or malfunctioning
components in an effort to avoid the possibility of a dangerous failure involving structural
members or hydraulic system components.
Be certain any repairs necessary are completed prior to loader operation.
Follow recommended maintenance procedures and precautions on Page 13.
Completely familiarize yourself and others involved with the operation of the hydraulic control
valve before operating the loader.
Be certain all bystanders are clear of the machine and operation area prior to operation.
It may be necessary to add wheel ballast or rear weights as recommended by the tractor
manufacturer to maintain stability of the machine to prevent tipping or upset which could result in
serious injury or death. See mounting instructions for specific information.
It is recommended that both front and rear wheel treads be set to the widest recommended width to
prevent tipping or upset which could result in serious injury or death.
This loader is designed for farm type operations such as snow removal, barn and feedlot cleaning,
light commercial or light grading and digging. It’s design is NOT intended for industrial use.
DURING OPERATION:
Never operate the machine other than from the tractor operator’s seat.
Be sure operating area is clear of others during machine operations.
Never lift, hoist, or carry humans in the bucket or on any portion of the loader or loader
attachments. Failure to heed, may result in serious injury or death.
Page 3

SAFETY INFORMATION 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.
Be certain to avoid overhead electrical wires when operating loader. Contact with power lines may
cause serious injury or death.
Avoid sudden stops when lowering or lifting the loader boom to prevent loss of control over the
machine and/or load, which may result in serious injury or death.
Use maximum ballast and the widest recommended wheel setting on your tractor when handling
large shiftable loads.
Never attempt to ram with the bucket at high speed or full tractor power. Sudden impact may result
in structural failure and possible serious injury or death.
Never adjust or perform maintenance on the loader or tractor with the unit in motion, or without
power source locked out.
Never get under bucket or lift arms or reach through the lift arms or bucket linkage when the loader
is in operation. Inadvertent movement may cause serious injury or death.
FOLLOWING OPERATION:
Whenever the machine is not in operation, lower the loader boom and set the tractor brakes,
disengage drive, shut the engine off, and remove the ignition key before dismounting the tractor.
If loader is to be disengaged from tractor, be sure the loader is securely supported on a hard, level
surface and the stand is securely engaged. Be certain all connections between tractor and loader are
free before disengaging.
TRANSPORTING:
Use safety lights and SMV emblem in addition to whatever local codes require when equipment is
being transported on the road or highway. Check with proper authorities for legal limitations.
Transport all loads at a slow and safe speed.
Carry the load as low as possible and maintain adequate visibility and good round clearance at all
times.
Page 4

SAFETY INFORMATION CONTINUED
PERFORMING MAINTENANCE:
Carefully review, understand, and follow the “maintenance” section in this owners manual before
attempting to service loader.
Lower the bucket or attachment to the ground, shut off tractor engine, and relieve pressure in the
hydraulic system before adjusting, lubricating, or servicing the loader.
Escaping hydraulic oil under pressure can penetrate the skin. Never use any part of your body to
check for hydraulic leaks. Use cardboard when checking for leaks. See Fig. 5-1. Relieve
hydraulic pressure before disconnecting any hydraulic line. Failure to heed may result in serious
injury or death.
Before disconnecting hydraulic lines, lower the loader and attachments. Lock out the hydraulic
supply and relieve all hydraulic pressure.
Replace any damaged or painted-over decals. See Page 6 for replacement decals.
REMEMBER:
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
Page 5

SAFETY DECALS
Page 6

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. DO NOT ram into frozen dirt
piles, frozen manure piles, ice, etc., with great momentum where sudden shock loads are encountered.
Serious and costly damage may result to both the loader and the tractor.
When scraping or back dragging do not extend the attachment cylinders more than one half of the
cylinder’s stroke. A limited amount of leveling may be done, when the loader valving is arranged with a
float control. This will prevent damage to cylinder rods. Never ride in the bucket.
Before operating the loader, be sure no one is standing near it. Only one person, the operator, should be on
the tractor. Remain at the controls and under no circumstances leave the tractor unattended with the bucket
in a raised position.
Never lift a person in the bucket or walk under a raised bucket.
Never drive your loader-equipped tractor down a hill that is steeper than 15 degrees. Carry all loads low
and use care on side hills.
Always keep unused PTO shaft clutch levers disengaged.
Keep hands, feet, and clothing away from all moving parts.
Hydraulic oil, under pressure, can cause injury. Be sure that all connections are tight and that all pressure
is relieved before disconnecting any lines.
Care must be taken with your loader cylinders. Nicks, scratches, rust, or other shaft damage can result in
worn packing causing cylinder leakage and subnormal performance.
MOVE SLOWLY
USE COMMON SENSE
BE CAREFUL FOR YOUR OWN SAKE AND THAT OF OTHER PEOPLE
TRACTOR & SAFETY POINTERS
Page 7

Fig 8-4
Fig 8-1
ATTACHING LOADER
Page 8
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. (Fig. 8-2)
3. Once all hoses have been properly coupled drive the tractor forward
checking to insure that the top pivot shaft on each loader upright clears the
top cradle on each mount tower. (Fig. 8-3)
4. Allow the top pivot shaft to settle into the cradle on the top of each mount
tower. After the uprights slide into the mount raise the loader slowly to
engage firmly into the mount cradles.
5. To lock the loader onto the mount, install the two 665421 – 1” diameter
mount pins into the uprights through the mount tightener and pin with hitch
pin. (Fig. 8-4) (Note: The left side mount pin will need to be inserted from
the inside of the upright due to muffler interference.) (The left side hood
panel will need to be temporarily removed to do so.)
6. To secure the loader to the mount tighten the 3/4” bolt at the back of the
mount tower. (Fig. 8-5) Re-check bolts after first three hours of use.
7. After both uprights are secured to the mounts, raise the loader still further
to disengage and store the loader stands in the torque tube of the loader
frame. (Fig 8-6)
8. Prior to operation, be certain to review all safety and operation
information contained within this manual. Check bolts on back of mount or
the first 3 hours of use, then check periodically during normal maintenance
procedure.
Fig 8-2
Fig 8-3
Fig 8-5 Fig 8-6

ATTACHING BUCKET
1. Raise handles until they stop.
2. Then tip adapter down-ward to about 60 Deg.
3. Drive into bucket and aim the adapter toward the center of the back of the bucket and lower the adapter
below the lip on the bucket.
4. Once the bucket and the adapter meet lift adapter slowly and drive ahead very slow and tilt the adapter
straight up until bucket is about 2” off the ground surface.
5. Push the handles down until they snap and latch. Make sure periodically that the handles stay in the
latched position.
Page 9

IMPORTANT:
Never attempt loader attachment on grades which are not reasonably level.
1. Raise loader frame slightly to permit loader stand reengagement.
(Fig 10-1)
2. Lower bucket to ground and tip slightly forward to apply pressure to
mount connection. Note: This will prevent the loader from advertently
rocking forward when the mount pins are removed and uprights are
disengaged from it’s cradle. (Fig. 10-2)
3. Loosen the 3/4” bolt at the back of the mount enough to permit the
removal of the mount pins. (Fig. 10-3)
4. Use the lift cylinders to disengage the bottom anchor bar from the mount
tower. Then tilt the bucket back to rotate the top of the upright up and out
of the cradle, and into a storage position. (Fig. 10-4)
5. Before completely backing out, disconnect and store the loader system
hydraulic hoses. It is important that the hoses be properly stored to keep
the hose couplers as clean as possible. (Fig. 10-5)
IMPORTANT:
Never store the detached loader where insufficient soil bearing capacity exists. Good firm clay or firmly
packed dirt are sufficient, providing the area is dry. If you are unsure, use blocking under the stand foot to
disperse the load. Failure to heed, may allow the loader to settle and prevent attachment at later date.
WARNING:
Re-couple any hydraulic hoses together for your particular system when necessary to prevent
damage to tractor hydraulics. See your particular mount of hydraulic hook-up instructions.
DETACHING LOADER
Page 10
Fig 10-1
Fig 10-2
Fig 10-3
Fig 10-4
Fig 10-5

WARNING:
Never allow anyone to operate the loader until they have carefully reviewed and
understood this owners manual.
FILLING THE BUCKET:
Approach and enter the pile with the bucket level.
Roll bucket back gradually as the loader moves through the pile.
RAISING THE BUCKET:
WARNING:
Make sure material in bucket cannot spill out on to tractor when loader boom is raised.
Keep clear of overhead obstructions such as trees, limbs or power lines when raising
the bucket.
Side cutting is the best method of reducing large stockpiles. If the sides of the pile are too
high, use the loader to pull them down and reduce the possibility of slides.
WARNING:
NEVER attempt to operate the loader with someone near the loader frame or bucket.
To remove the bucket, reverse the procedure as just described.
OPERATION
Page 11

Page 3Page 12
SPECIFICATIONS
KOYKER C185 LOADER SPECIFICATIONS
Description of Equipment Rated
Loader Model....................................................................................................................C185
Bucket Size ..........................................................................................................................5’
Rated Flow......................................................................................................................10 GPM
Maximum Pressure ........................................................................................................2200 PSI
Lift Cylinder Dia..........................................................................................................2 1/4” Bore
Attachment Cylinder Dia.............................................................................................2 1/4” Bore
Tractor Horsepower Range............................................................................................30-60 HP
Dimensional Specifications
(A) *Maximum Lift Height to Pivot Pin.......................................................................... 10’ 1”
(B) *Lift Height under Level Bucket................................................................................ 9’ 3”
(C) *Clearance with Bucket Fully Dumped...................................................................... 7’ 7”
(D) *Reach at Maximum Lift Height................................................................................ 3’ 1”
(E) Maximum Dump Angle................................................................................................50°
(F) *Reach with Bucket on Ground.....................................................................................7’
(G) Maximum Rollback Angle...........................................................................................41°
(H) *Digging Depth.............................................................................................................3”
(J) *Overall Height in Carry Position............................................................................... 5’ 6”
Operational Specifications
(U) *Lift Capacity to Maximum Height at Pivot Pin ....................................................2056 lbs.
(V) *Lift Capacity to Maximum Height 31.5” Forward of Pivot Pin............................1428 lbs.
(Y) *Breakout Force at Ground Line at Pivot Pin.........................................................2698 lbs.
(Z) *Breakout Force at Ground Line 31.5” Forward of Pivot Pin.................................1904 lbs.
*Raising Time..............................................................................................................4.1 seconds
*Lower Time................................................................................................................2.8 seconds
*Attachment Dumping Time .......................................................................................4.3. seconds
*Attachment Rollback Time........................................................................................3.0 seconds
*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.
Specifications are subject to change without notice and without liability therefore.

LOADER INSPECTION, LUBRICATION 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.
Inspect all pins and grease fittings before each use and lubricate with heavy duty grease as indicated in this
manual.
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.
Be certain hydraulic system remains sealed at all times to prevent contamination.
Check and maintain an adequate fluid level in the tractor reservoir prior to use.
Inspect all hydraulic system hoses and fittings. Replace prior to further operation if damaged.
WARNING:
Escaping hydraulic oil under pressure can penetrate the skin. Never use any part of your
body to check for hydraulic leaks. Use cardboard when checking for leaks. See Fig. 12-1
Relieve hydraulic pressure before disconnecting any hydraulic line. Failure to heed may
result in serious injury or death.
FIG 12-1
Page 13

KEY PART NUMBER DESCRIPTION QUANTITY
1...................... 678223................. 1st Oil Line (Yellow).........................................................1
2...................... 678224................. 2nd Oil Line (Green)..........................................................1
3...................... 678225................. 3rd Oil Line (Red)..............................................................1
4...................... 678226................. 4th Oil Line (Blue).............................................................1
5...................... 677707................. 2 1/4” Lift Cylinder............................................................2
6...................... 678165................. 2 1/4” Bucket Cylinder ......................................................2
7...................... 673993................. 18” Hydraulic Hose............................................................6
8...................... 673742................. 22” Hydraulic Hose...........................................................2
HYDRAULIC SYSTEM PARTS SCHEDULE & DIAGRAM
Page 14

KOYKER C185 LOADER PARTS DIAGRAM
Page 15
NOTE: 6’ & 7’ Skid Steer Fast Attaching Bucket is OPTIONAL
See following sheet for part number

LOADER PARTS SCHEDULE
Page 16
ITEM NO. PART NO. DESCRIPTION QTY.
1 679400 C185 MAIN FRAME WELDMENT 1
2 678229 LBUNDLE SS ADAPTER ASS 1
3 657740 INDICATOR SLEEVE (ZINC) 1
4 657744 INDICATOR ROD (ZINC) 1
5 666413 185-C185 OIL LINE COVER PLATE 1
6 670330 5' FAST ATTACH SKID STEER BUCKET 1
670331 6' FAST ATTACH SKID STEER BUCKET (OPTIONAL) 1
670332 7' FAST ATTACH SKID STEER BUCKET (OPTIONAL) 1
7 678186 FRONT LINKAGE WLDT 2
8 679332 REAR LINKAGE ARM (ZINC) 2
9 679406 LH PEDESTAL UPRIGHT WLDT 1
10 679405 RH PEDESTAL UPRIGHT WLDT 1
11 678168 STAND LEG (ZINC COATED) 1
12 678216 STAND SUPPORT LEG 1
13 678166 STAND FOOT WELDMENT 1
14 679330 LH REAR LINKAGE WLDT (ZINC) 1
15 679331 RH REAR LINKAGE WLDT (ZINC) 1
16 678222 LPACKAGE - LDR M450/185C HYD LINES 1
17 672503 OIL LINE CLAMP 18
18 679214 1.125" x 6.06" GREASABLE PIN 2
19 679216 1.125" x 4.813" GREASEABLE PIN 4
20 657632 ZERK-1/4-28 GREASE 10
21 665421 MOUNT PIN 2
22 640246 #6 HITCH PIN 2
23 666941 SERIAL NUMBER DECAL 1
24 666943 HYDRAULIC PRESSURE DECAL 5
25 666946 LOADER WARNING DECAL 2
26 672275 OPERATION DECAL 2
27 679645 C185 RH REVOLUTION LOGO 1
28 679646 C185 LH REVOLUTION LOGO 1
29 666944 WARNING DECAL 1
30 654629 AMERICAN MADE DECAL 2
31 679647 C185 LOGO 2
32 666945 "DANGER DECAL" 1
33 679329 1.125" EXT RETAINING RING 4
34 641119 LOCK PIN WELDMENT 1
35 640671 HITCH PIN #3 1
36 673336 INSERT-.313-18 4
37 640021 SCREW-.3125-18 X 2.25 GR 5 HHC 8
38 640049 SCREW-.4375-14 X 1.25 GR 5 HHC 2

LOADER PARTS SCHEDULE
Page 17
ITEM NO. PART NO. DESCRIPTION QTY.
39 640136 NUT - .438-14 GR 2 CENTER LOCK 2
40 640087 SCREW-.625-11 X 4.00 GR 8 HHC 1
41 640142 NUT-.625-11 HEX 1
42 640132 NUT - 0375 - 16 GR 2 HEX 2
43 640158 WASHER - FLAT 0.500 1
44 679333 1.28 X 2.01 X 0.135 PLASTIC SPACER 4
45 673615 SCREW - .3125-18 X 2.0 GR 5 HHSLDR 4
46 654141 NUT - .313-18 GR 2 LOCK NYLON INSERT 13
47 677707 LIFT CYLINDER ASS - 2 1/4" 1
48 678165 BUCKET CYLINDER ASSY - 2 1/4" 1
49 679188 INDICATOR ROD SPACER 1
50 673012 SCREW-.375-16 X 1.75 GR 5 HHT 1
51 640152 WASHER - 5/16" FLAT 6

Page 18
SKID STEER PARTS SCHEDULE & DIAGRAM
ITEM NO. PART NO. DESCRIPTION QTY.
1 678180 SKID STEER ADAPTER WLDT 1
2 675309 RH YOKE (PLATED) 1
3 675311 LH YOKE (PLATED) 1
4 675317 HOOKUP PIN PLATED 2
5 675322 CROSS PIN 2
6 675316 ENGAGEMENT PIN 2
7 675323 COMPRESSION SPRING 2
8 675324 1" BELLEVILLE DISC SPRING 2
9 657632 ZERK-1/4-28 GREASE 8
10 661017 NUT - 1.00-14 GR C LOCK THIN 2
11 640034 SCREW-.375-16 X 1.50 GR 5 HHC 2
12 659885 NUT - .500-13 GR 2 HEX 2
13 653098 WASHER - 1/2" FLAT N-SERIES 4
14 640132 NUT - 0375 - 16 GR 2 HEX 2
15 679214 1.125" x 6.06" GREASABLE PIN 2
16 679218 1.125" x 6.313" GREASEABLE PIN 2
17 640021 SCREW-.3125-18 X 2.25 GR 5 HHC 4
18 654141 NUT - .313-18 GR 2 LOCK NYLON INSERT 4