Operating Techniques
Maximum Allowable Load
(Metric Units)
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When carrier machines are equipped with front attachments other than buckets, lifting a load that is greater than shown in the Loading Chart for that machine could cause the attachment to rotate downward, allowing the load to slide or pitch forward resulting in personal injury or death. |
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The combined weight of the coupler, attachment, and load must not be greater than the maximum allowable load at the load application point as shown in the Loading Chart for the carrier machine. The weight of the coupler is 200 kg.
Maximum Allowable Load
(Metric Units)
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When carrier machines are equipped with front attachments other than buckets, lifting a load that is greater than shown in the Loading Chart for that machine could cause the attachment to rotate downward, allowing the load to slide or pitch forward resulting in personal injury or death. |
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The combined weight of the coupler, attachment, and load must not be greater than the maximum allowable load at the load application point as shown in the Loading Chart for the carrier machine. The weight of the coupler is 441 lb.
Front Implement Pin Or Wedge Style Coupler For Attachments Not Requiring Third Valve Hydraulics
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Injury or death could result if operator or any person is in the cab and at controls. Clear all personnel from the machine and the area while performing all steps listed in operating techniques. |
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Attaching Front Implements
- 1. Disengage the coupler locking pins or wedges by moving and holding the coupler switch to unlock position.
- 2. Engage top coupler tube into implement top hooks by tilting coupler forward. Tilt coupler forward by pushing tilt lever forward.
| NOTICE |
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Make sure the top coupler tube is below the level of the hooks on the implement to be attached by adjusting loader arm height. |
(A) Unlock. (B) Lock.
(1) Implement bracket. (2) Implement top hook. (3) Implement retaining hole.
- 3. Drive machine forward slowly, aligning the implement hooks with the coupler tube.
- 4. Pull the lift lever back to slightly raise coupler.
- 5. Align implement retaining holes or pockets with coupler pins or wedges by pulling the tilt lever back until the implement squarely rests against the coupler face.
- 6. Engage coupler locking pins or wedges into implement retaining holes or pockets by moving the coupler switch to lock position. Visually check that the coupler locking pins or wedges are engaged into implement retaining holes. Insure implement is engaged by following steps 7 through 9.
- 7. Push the tilt lever forward to tilt the implement down.
- 8. Push the tilt lever forward to put down pressure on the implement.
- 9. Back the machine and make sure there is no movement between the implement and the coupler.
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Improper attachment of implements could result in injury or death. Do not operate this machine until you have positive indication that the coupler pins or wedges are fully engaged. Check for engagement by:
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For Implements Requiring Third Valve Hydraulics, These Additional Steps Are Required
Front Implement Quick Disconnect Lines (If Equipped).
- 1. Stop the engine.
- 2. Move all of the hydraulic implement control levers to relieve the hydraulic pressure.
- 3. Return all levers to NEUTRAL position.
- 4. Disconnect hydraulic hoses to the tool being used, clean couplings of all foreign material.
- 5. Remove the quick disconnect dust plugs and connect hoses.
- 6. Install dust plugs in unused disconnects.
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The above steps should be done when disconnecting any hoses. |
Operation
With the locking pins retracted, tilt the coupler frame forward 30° to 40°. Drive the loader into the attachment with the frames top tube slightly lower than the hooks. When the top tube contacts the hooks, square-up the frame with the hooks as required. With both hooks over the top tube and between the hook guides located on the tube, raise the attachment about two feet off the ground. Rack back until the attachment rests against the frames lower tubes. Extend the locking pins by activating the hydraulic pump toggle switch.
Reverse the above procedure to uncouple from an attachment.
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When operating for one day or more without changing attachments, the hydraulic pump should be activated for one second each day to maintain system pressure. |
Maintenance
Hinge pins should be greased at least once during each 24 hours of operation. Inspect the coupler frame daily for weld cracks and wear. Keep material from building up on the dump stops of the coupler frame. If excessive material is present on these stops, above normal forces may result in stop failure or breakage.
Suction Filters
All Monarch® hydraulic controls have suction filters which must be cleaned periodically or whenever flow is slow or sluggish. Some filters can be washed in cleaning solvent and blown dry with compressed air. Those which cannot be cleaned properly should be replaced. External high pressure filters may be added to the system for added protection and ease of cleaning.
Specifications
Standard Torque For Fasteners
NOTE: Take care to avoid mixing metric and inch dimensioned fasteners. Mismatched or incorrect fasteners can result in vehicle damage or malfunction, or possible injury. Exceptions to these torques are given in this Service Manual where needed.
NOTE: Prior to installation of any hardware, be sure components are in satisfactory condition. Bolt and threads must not be worn or damaged. Hardware must be free of rust and corrosion. Clean hardware with a non-corrosive cleaner and apply engine oil to threads and bearing face. If thread lock or other compounds are to be applied, do not apply engine oil.
Metric Nuts And Bolts
Metric Taperlock Studs
Inch Nuts And Bolts
Inch Taperlock Studs
Standard Torque For O-Ring Face Seal Fittings And 37° Flared Fittings
NOTE: Use 50 percent of the above torque values when either the fitting or port material is non-ferrous.
O-Ring Face Seal Fittings
O-Ring Face Seal Fittings
1. O-ring face seal fitting. 2. O-ring groove. 3. O-ring face seal nut. 4. O-ring. 5. Straight thread O-ring port end fitting.
O-Ring Face Seal Fitting Nut
Fitting Installation
Hydraulic Line Installation
- 1. For a metal tube to hose connection, install the tube and tighten all bolts finger tight.
- 2. Tighten the bolts at the rigid end.
- 3. Install the hose and tighten all bolts finger tight.
- 4. Put the hose in a position so that is does not make contact with the machine or another hose.
- 5. Tighten the bolts on both connections.
- 6. Start the engine.
- 7. Move the implement control levers to all positions.
- 8. Look at the hose during movement of the implement. Make sure hose is not in contact with the machine or other hoses.
- 9. Shut off the engine.
- 10. If necessary, put the hose in a new position where it will not make contact when the implement is moved.
Assembly Of Fittings With Straight Threads And O-Ring Seals
This type of fitting is used in many applications. The tube end of the fitting will be different in design so that it can be used in many different applications. However, the installation procedure of the fitting is the same. If the tube end of the fitting body is the same as in the installation (either an elbow or a straight body) it will be necessary to assemble the sleeve on the tube before connecting the tube to the end.
Elbow Body Assembly
1. End of fitting body (connects to tube). 2. Fitting body. 3. Locknut. 4. Backup washer. 5. O-ring seal. 6. End of fitting that goes into other parts.
- 1. Put locknut (3), backup washer (4) and O-ring seal (5) as far back on the fitting body (2) as possible. Hold these components in this position. Turn the fitting into the part it is used on until backup washer (4) just makes contact with the face of the part it is used on.
- 2. To put the fitting assembly in its correct position, turn the fitting body (2) out (counterclockwise) a maximum of 359 degrees. Tighten locknut (3) to the torque shown in the correct chart for the fitting used.
NOTE: If the fitting is a connector (straight fitting), the hex on the body takes the place of the locknut. To install this type of fitting, tighten the hex against the face of the part it goes into.
Torques For Flared And O-Ring Fittings
The torques shown in the charts that follow are to be used on the nut part of 37 Degree Flared, 45 Degree Flared, and inverted Flared fittings (when used with steel tubing), O-Ring plugs, O-Ring fittings and swivel nuts when used in applications to 20700 kPa (3000 psi)
37° Flared Fittings
45° Flared And 45° Inverted Flare Fittings
Tapered Pipe Thread Fittings
Tightening Other Fittings
Hi Duty (Shear Sleeve) Tube Fittings
After tube has been put through the nut and makes contact against the tube shoulder in the fitting body, turn the nut with a wrench until a small decrease in torque is felt. This is an indication that the sleeve has been broken off the nut. Hold the tube to prevent turning and tighten the nut 1 1/2 turns.
Hi Seal Fittings
Put nut and sleeve over the tubing with the short heavy end of the sleeve facing the end of tubing. Put the tube end against the counterbore in the body of the fitting and tighten until nut is over the last thread on the body. The remainder of space is used whenever the fitting is removed and installed again.
Torques For Constant Torque Hose Clamps
A constant torque hose clamp can be used in place of any standard hose clamp. Make sure the constant torque hose clamp is the same size as the standard clamp. Due to extreme temperature changes, hose will heat seat. Heat setting causes hose clamps to loosen. Loose hose clamps can result in leaks. There have been reports of component failures caused by hose clamps loosening. The new, constant torque hose clamp will help prevent these failures.
Each installation application can be different depending on the type of hose, fitting material and anticipated expansion or contraction of the hose and fittings. A torque wrench should be used for proper installation of the new, constant torque hose clamps. Constant torque hose clamps should be installed as follows:
- * To allow for maximum expansion install clamps at 5.7 N·m (50 lb in).
- * To allow for equal expansion and contraction, install clamps at 10.2 N·m (90 lb in).
- * To allow for maximum contraction, install clamps at 14.1 N·m (125 lb in).
- * To allow for equal expansion and contraction, install clamps at 10.2 N·m (90 lb in).