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LIVE HEEL
Safety
250D-076 BATTERY DISCONNECT SWITCH Turn the battery disconnect switch off if the vehicle is to be idle for an extended period of time (Example – overnight).
Before transporting the machine:
• Secure the grapple to the trailer and raise the stabilizers. • Shut down the engine and turn the master disconnect switch off. • Check to ensure that all doors, panels and access covers are installed and properly secured.
Tigercat 234B Loader
When parking a machine with self-propelled option:
• Park on level ground. • Do not park on a hillside or incline. • Take the machine out of DRIVE MODE. This will automatically engage the park brake. • Lower the stabilizers to the ground. • Park the grapple in it's proper location on the carrier or rest on the ground. • Stop the engine. • NOTE: As a safety precaution before working on or around the machine, release brake system pressure by fully applying the brake foot pedal 40 times or more.
The pedal should have a 'soft' feeling when the pressure has been released
Pressure may remain in the system after completing the above. Use caution when loosening hydraulic connections. • Turn the machine battery disconnect switch off if the vehicle is to be parked for an extended period of time (Example – overnight).
NOTE:
Wait 30 seconds after engine shut down before turning off battery disconnect switch. If battery disconnect is turned off before this the engine ECU (Engine Control Unit) will register a fault. When transporting the machine watch that enough clearance is available on both sides and above the machine or any of its attachments to avoid contact with power or telephone lines, bridge structures, etc. Before transporting the machine check to ensure that all doors, panels and access covers are installed properly and secured. Improperly secured doors or panels pose a serious danger to pedestrians and other vehicles. NOTE: This machine is equipped with an After Run/ Accessory Relay which delays the power disconnect to engine related fuses and relays (ECU /ATS relay, NOx Sensor relay, NOx Sensor fuse, ECU Power fuse, DCU fuse). Whenever the engine is stopped all DEF solution is pumped back to tank before the engine power system is turned off. This process takes approximately 90
seconds.
Refer to SELECTIVE CATALYTIC REDUCTION SYSTEM in SECTION 3 for more information.
Tigercat 234B Loader SERVICING SAFETY PRECAUTIONS
Safety
Conduct maintenance inspections at least as frequently as recommended in SECTION 3 of the THIS MANUAL.
When servicing or repairing equipment, shut the engine down. Turn Battery Disconnect switch OFF and lock out the switch in accordance with local regulations. This machine is equipped with a remotely operated battery disconnect relay. Some wiring on the machine is live even when the battery disconnect switch is off. When servicing the electrical system, remove the battery cables from the batteries disconnecting the negative cables first.
250D-076
BATTERY DISCONNECT SWITCH
Install a 'DO NOT START ENGINE' sign on the operator’s cab door and in the engine compartment when making repairs to the machine. Before performing maintenance or repair work on any equipment, consult the manufacturer’s instruction manual and follow recommended procedures.
WARNING
Diesel fuel or hydraulic fluid under pressure can penetrate the skin and cause serious personal injury, blindness, or death. If any fluid is injected into the skin, it must be surgically removed within a few hours by a doctor familiar with treating this type of injury.
Never use your bare hand to check for fluid leaks. Fluid leaks under pressure may not be visible. When searching for leaks, wear work gloves and use a wrench or piece of wood to move hydraulic hoses. Do not grab hold of hydraulic hoses. Wear safety goggles for eye protection.
Pressure can be maintained in a hydraulic system long after the power source and pump have been shut down. Lower the attachment to the ground, stop engine and relieve trapped pressure before performing work on components, or disconnecting any hoses. Accumulators will self-drain within 2 minutes of stopping the engine.
Safety
The radiator and the engine cooling system should be cleaned and serviced daily to maintain moderate engine temperatures.
WARNING
WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!
• Before servicing the machine, allow the
engine cooling system, fuel system, exhaust system, hydraulic system and machine surfaces to cool down.
• Use a thermometer to check surface and
system temperatures to ensure it is safe to begin service work.
• DO NOT begin service work until the
surface or system temperature has cooled down to below 38°C (100°F)! Tigercat 234B Loader
Prior to welding on any part of the machine, the repair area should be cleaned and a fire extinguisher should be made available at the welding location. Care must be taken in attaching the welding machine grounding clamp so current does not pass through bearings, especially the swing bearing. Turn OFF the battery disconnect switch. Disconnect the positive (+) and negative (-) battery cables from the batteries disconnecting the negative cable first. This machine is equipped with sensitive electronic control equipment, prior to welding:
630E-259
ENGINE CONTROL UNIT
Disconnect the engine ECU (Engine Control Unit) by unplugging the two multi-pin connectors.
XA2-A0 MODULE
Disconnect the XA2-A0 module connector (under platform in valve compartment ).
Tigercat 234B Loader Safety
234B-278
XA2-A1 MODULE
Disconnect the XA2-A1 module connector (mounted on same plate as the XA2-A0 but in engine compartment).
Disconnect the NH3 sensor ECU and the outlet NOX sensor ECU both mounted on a bracket next to the radiator on the left side of the engine compartment.
Disconnect the inlet NOX sensor ECU mounted above the vacuum pump at the back of the hydraulic tank.
NO x
SENSOR ECU (OBSCURED) NH3 SENSOR ECU
250D-064
NOX AND NH3 SENSOR ECU'S
INLET NO x SENSOR ECU COVER CAPSCREWS 2 BOTTOM 1 TOP (NOT SHOWN)
MD3 CONTROLLER
Disconnect the MD3 controller in the cab. Remove back cover from the MD3, held by 3 hex capscrews (1 top. 2 bottom) to access plugs.
234-108
XC21 MODULE
Disconnect the XC21 module mounted in the cab fuse and relay panel. When welding is complete reconnect all multipin connectors. Attach the battery cables reconnecting the positive (+) cable first. Turn ON the battery disconnect switch.
250D-066
INLET NOX SENSOR ECU
Safety
WARNING
When the stabilizers are on the ground, Hydraulic oil in the cylinders can be under very high pressure. Never remove the check valve or the counterbalance cartridges when the stabilizers are on the ground.
CARTRIDGES
If it becomes necessary to remove either the stabilizer counterbalance or check cartridge from the housing, or cylinder base end; Raise the stabilizer until it is in the 'overcenter' position and stop the engine. In this position, the weight of the stabilizer will not influence pressures in either end of the cylinder.
LOWER FRAME VERTICAL CENTERLINE
COUNTERBALANCE VALVE
STABILIZER UP IN VERTICAL POSITION
CYLINDER
STABILIZER COUNTERBALANCE/CHECK
230-06A VALVE CARTRIDGE REMOVAL If a stabilizer cannot be moved to the vertical position due to a malfunction, move the other stabilizers in conjunction with the boom so that the stabilizer pad is clear of the ground. In this position the pilot operated check valve may be removed followed by the counterbalance valve.
Tigercat 234B Loader
Explosive release of fluids from pressurized cooling system can cause serious burns. Shut off engine. Only remove coolant filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.
Do not change any pressure or relief setting unless Tigercat authorized instruction has been obtained.
WARNING
DO NOT operate this machine to lift or move any objects other than what it is designed to lift or move.
• Do not use the boom to service other
equipment.
• Do not use the boom to lift items such
as tires, engines, cylinders, boom components, etc.
• Do not modify the boom system. • Do not add hooks or lugs to the boom for
the purpose of attaching lifting rigging.
• Do not use the attachment for any
purpose other than the intended function. Maintain a safe operating distance between the machine and workers and all other personnel. It is the duty of the operator to ensure that no person approach the machine while in use. Failure to follow the above instructions could result in serious injury or death.
Tigercat 234B Loader
Use the proper tool for the job. Repair or replace worn or damaged tools including lifting equipment immediately. Keep your hands, feet, head, and loose clothing away from power driven parts. Tie long hair behind your head. Remove rings and other jewelry to prevent electrical shorts and entanglement in moving parts. Always be aware of machine pinch points that could cause injury. Never place body parts within the range of motion of the working parts of the machine. Never stand under an object supported with hydraulics. Always use safety stands or a locking device. Before performing work under the boom system ensure it is firmly supported. When opening or closing power operated engine door, watch for personnel in door areas. If the engine is running inside a building, ensure that sufficient ventilation is available to prevent a build-up of toxic exhaust fumes. Run the engine only when it is necessary for testing or adjustments.
Work in a ventilated area. If it is necessary to run an engine in an enclosed area, use an exhaust pipe extension to remove toxic exhaust fumes. If you don't have an exhaust pipe extension, either work outside, or open the shop doors.
Safety
Dispose of fluids properly. Do not pour fluids into the ground, stream, pond or lake. Before draining any fluids, know the proper way to dispose of them. Read, understand and follow all operating safety precautions specified by the attachment manufacturer.
