Operation Manual for the Custom Hand Metering Unit (HMU) Steering Wheel and Transmission Control for the 988H Wheel Loader{3065, 4309, 4310, 4338, 4343} Caterpillar


Operation Manual for the Custom Hand Metering Unit (HMU) Steering Wheel and Transmission Control for the 988H Wheel Loader{3065, 4309, 4310, 4338, 4343}

Usage:

988H BXY


Wheel Loader:
988H (S/N: BXY1900-UP)

Introduction

This manual explains the operation of the custom HMU steering wheel and transmission control for the 988H wheel loader.

This supplemental product support literature should be used with the Service Manual, RENR6200 and the Parts Manual, SEBC3906 and Operation and Maintenance Manual, SEBU7808.

Steering Control




Illustration 1g01506135

Custom steering wheel

(1) Steering Control

(2) Transmission control

(3) Tilt control for the steering wheel

The speed of the response of the machine is controlled by the turning speed of the steering wheel.

Note: If the steering wheel is turned at less than twenty eight RPM the machine will not respond.

Transmission Control




Illustration 2g01458506

Custom steering wheel

The direction for machines that are equipped with conventional steering is determined by the position of the lever that is located on the left side of the steering column.

(2A) FORWARD - Push the lever forward in order to place the transmission in FORWARD.

(2B) NEUTRAL - Push the lever to the middle position in order to place the transmission in NEUTRAL.

(2C) REVERSE - Push the lever backward in order to place the transmission in REVERSE.

Speed Selection

The speed of the machines that are equipped with a custom steering wheel is selected by rotating the switch (3) that is located on the left side of the steering column. Rotate the switch forward or backward in order to increase or decrease the speed of the transmission.

Tilt Control for the Steering Wheel

To adjust the steering column, pull up on steering column tilt lever (3) and move the steering column to the desired position. Release lever (3) in order to lock the steering column in the desired position.

Autoshift Control




Illustration 3g01469367

Overhead panel

(A) Autoshift switch

Table 1
Modes of Operation for the Transmission Neutralizer    
Autoshift Switch     Manual Mode     2-4     1-4    
Shift Pattern     4-3-2-1     4-3-2     4-3-2-1    
Lowest Available Speed     1     2     1    

Note: Autoshift operation is affected by the fuel management system. Refer to Operation and Maintenance Manual, SEBU7808 for an explanation of the system interaction.

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