Custom Product Support Literature for the 980H Wheel Loaders that have a Steel Mill Arrangement{7000} Caterpillar


Custom Product Support Literature for the 980H Wheel Loaders that have a Steel Mill Arrangement{7000}

Usage:

980H MHG


Wheel Loader:
980H (S/N: MHG1-UP)

Introduction

This supplemental product support literature should be used with the appropriate Service Manual and the appropriate Parts Manual that is available for this machine. This supplement shows the custom modifications that have been made to the standard machine configuration.

The Service Manual and the Parts Manual that is available for the standard machine should be used if the service information is not in this supplementary product support literature.

Steel Mill Arrangement for the 980H Wheel Loaders

The 980H Wheel Loaders with the Steel Mill Arrangement are designed to reduce the effects of the heat of handling hot slag. Caterpillar wants the customer and the end user to be aware that this arrangement does not make the machine fireproof!

284-2174 Steel Mill Arrangement

This is the top level part number for the steel mill arrangement. The part numbers that are listed below are assemblies and groups within the top level steel mill arrangement.

222-1738 Brake Accumulator Gp

The brake accumulator is a 3.79 L (231.28 in3) hydraulic brake accumulator with piston seals that have a higher temperature rating.

Note: Contact your dealer for service repair. Replacement accumulators should consist of the high temperature piston seals.

153-7786 Loader Frame Guard

The guards for the loader frame provide added protection for the main valve and for the lift lines.

189-7109 Steering Shaft

Standard steering shaft assembly is replaced by a steering shaft that consists of a steel cover. This steel cover provides higher resistance to heat and slag than the standard plastic cover for the steering shaft.

189-8281 Insulator

Heat insulation between the batteries and the battery box. This insulation helps to reduce the heat transfer from the steel battery box to the batteries.

233-9688 Transmission Ar (HEAVY-DUTY)

The heavy-duty transmission utilizes 432 mm (17 inch) planetary drives for all of the gears. This transmission arrangement is beneficial for extreme operating conditions that include heavy loads and many directional changes.

240-8591 Fuel Tank and Hydraulic Tank Guard

This group provides sheet metal guards for the fuel tank, the hydraulic tank, the brake accumulators, and the hydraulic oil filter. These guards provide protection from the slag and these guards also act as deflectors from the radiant heat.

242-6035 Cab Guard Gp

This shroud assembly provides protection in the lower front portion of the cab. Both the brake lines and the steering lines are guarded from the hot slag. This shroud also acts as a deflector from the radiant heat.

247-3027 Transmission Support

This group provides added support for the transmission, which is beneficial for applications that include a high number of directional changes.

249-2679 Tilt Cylinder Guard Gp

The tilt cylinder guard is a sheet metal guard above the tilt cylinder that provides protection from falling slag.

289-8295 Step Gp

The 289-8295 Step Gp replaces the rear standard rubber supports for the steps with steel cable supports. These steps provide longer life in a high temperature environment.

265-6753 Enclosed ROPS Cab Ar

This arrangement includes rubber mounted glass for quick replacement.

284-8613 Lines Guard Gp

This group provides steel guards for the main implement valves and for the steering cylinders. A protective wrap for high temperatures is also called out for the various hydraulic lines and the electrical lines that are listed below:

  • Steering lines

  • Tilt lines

  • Lift lines

  • Ride control lines (if equipped)

  • Hydraulic tank lines

  • Hydraulic lines for the main valve

  • Fuel lines

  • Front wiring harness

  • Supplemental steering lines (if equipped)

  • Power train oil filler

  • Lines for manually lowering the lift arm

  • Parking brake cable

  • Lighting group

273-5629 Override Control Gp

Multiple overrides can be found in this group. These systems are designed to provide the operator with alternate controls in an emergency situation.

Parking Brake Override - The parking brake override allows the operator to release the parking brake from the rear of the machine.

Transmission Override - The transmission override allows the operator to bypass the standard transmission control module. The transmission override also allows the operator to shift the machine into first gear forward or first gear reverse.

Auxiliary Ignition - The auxiliary ignition provides the operator with the option of bypassing the standard ignition switch.

Note: These overrides cannot possibly address every failure mode. The overrides simply give the operator an alternative option.

Operating instructions for these overrides are included in this document.

282-1794 Signal Lighting Gp

This group mounts the front flood lamps and signals closer into the frame which is beneficial for operating the machine in narrow places.

283-2173 Rear Frame Hardware Gp

Blocks are added to the frame in order to support the heavy-duty transmission mounts.

284-2175 Front Fender Gp

These narrow steel fenders replace the standard fenders. All rubber components that could deteriorate with high temperatures are removed.

284-2176 Loader Frame Gp

This group adds the weld studs for the Guard GP to the loader frame.

286-3807 Power Train Electronic Control Module

This is software for the control module that is used on the Steel Mill Arrangement.

303-4010 Brake Control Conversion Ar (Parking)

The 303-4010 Brake Control Conversion Ar (PARKING) provides new bearings in order to avoid locking the lever that is in the brake control group.

Operation of the Parking Brake Override




Illustration 1g01338871

Rear view of machine

(A) Override switches for the parking brake and auxiliary engine shutdown




Illustration 2g01338889

Override switches and indicator for parking brake

(B) Override switch for the parking brake

(C) Override indicator for the parking brake

(D) Auxiliary engine shutdown switch

Your 980H Wheel Loader comes with a parking brake system that is activated by a spring and released hydraulically. If the machine stalls the switch for the parking brake release can be activated so the machine can be towed. The switch for the parking brake release is located in the rear grill of the machine. In order to access the switch, flip up the switch guard. Move the switch upward in order to release the parking brake. An auxiliary accumulator stores hydraulic pressure which releases the parking brake when the switch is activated.

The parking brake override also has a test mode. Move the switch downward in order to enter the test mode. The green indicator should light indicating that the system is working correctly. Test the parking brake override daily. If the green indicator lamp does not light, contact your local dealer for service. The machine should not be put back into operation until this issue is resolved. When the test is completed, make sure that the toggle switch is put back into the center position. Make sure that the guard for the switch is closed in order to protect the switch.

Note: Make sure that the parking brake override is not activated when you park the machine. Close the switch guard in order to deactivate the switch. When the switch guard is closed, the override switch is placed back into the center neutral position. The override switch should be in the center neutral position during normal operation.

Override Switches

The steel mill arrangement includes three override switches that are located in the cab. These switches are located on the right hand side of the cab toward the rear of the machine.




Illustration 3g01239200

Top view of cab

(E) Override switches




Illustration 4g01239199

Override switches

(F) Switch for the transmission override

(G) Auxiliary ignition switch

(H) System power switch

System Power Switch

The system power switch (H) should be activated in the forward position if the override feature is needed and the green indicator is not on. If the green indicator is on, leave the switch in the back position.

Note: If this switch needs to be activated contact your local dealer immediately for service. The machine should not be placed back into operation until the dealer has inspected the machine.

Auxiliary Ignition Switch

Your 980H Wheel Loader is equipped with an auxiliary ignition switch (G). This switch should only be used if the standard ignition switch fails. In order to activate, make sure that the green indicator lamp is on. If the lamp is not on, move the system power switch into the activated forward position. When the indicator lamp is on, the auxiliary ignition switch can be put into the momentary forward position in order to start the machine. Hold the switch forward until the machine starts. Once the machine is started, the transmission can be put into first gear forward, neutral, or first gear reverse by using the override switch (F) .

Note: If this switch needs to be activated, contact your local dealer immediately for service. The machine should not be placed back into operation until the dealer has inspected the machine.

Switch for the Transmission Override

Your 980H Wheel Loader comes with a switch (F) for the transmission override. If the transmission does not shift properly with the standard controls, the transmission override can be used. The switch for the transmission override has three positions :FIRST GEAR FORWARD (toggle switch in the forward position), NEUTRAL (toggle switch in the middle position) and FIRST GEAR REVERSE (toggle switch in the back position).

Note: The transmission override should only be used in an emergency situation. During normal operation, the switch for the transmission override should be in the center neutral position.

Note: If this switch needs to be activated, contact your local dealer immediately for service. The machine should not be placed back into operation until the dealer has inspected the machine.

It is important to maintain the machine according to all routine scheduled service. The override functions should be tested on a daily basis. Contact your local dealer for more information.

Override Warning Lights




Illustration 5g01324590

View of instrument panel

(J) Warning light for the transmission override

(K) Warning light for the parking brake override

An illuminated Warning light (J) indicates that the transmission override has lost power from the power supply. The machine needs to be serviced as soon as possible.

An illuminated Indicator light (K) indicates that the parking brake override has lost power from the power supply. The machine needs to be removed from the heat until the light turns off. The indicator will also light when the parking brake is engaged.

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