This is the COMPLETE official full preventive maintenance manual for the ALLISON TRANSMISSION HT 750DR . A preventive maintenance plan will help you stay on top of maintenance, repairs, and...
This is the COMPLETE official full preventive maintenance manual for the ALLISON TRANSMISSION HT 750DR .
A preventive maintenance plan will help you stay on top of maintenance, repairs, and parts replacements so you can prevent equipment failure before it ever happens. Preventive maintenance will also keep your operation running smoothly and efficiently, prolong the life of your equipment, and reduce your overall maintenance costs. Proper service and repair is important to the safe, reliable operation of the equipment. The service procedures recommended by Allison Transmission and described in this handbook are effective methods for performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
TABLE OF CONTENTS
Section I - REMOVING TRANSMISSION FROM VEHICLE
Draining Transmission
Disconnecting Controls
Uncoupling From Driveline And Engine
Removing Mounting Bolts
Removing The Transmission
Removing Input And Output Flange Or Yokes
Rebuild/Overhaul Instructions
Section II - PREPARING TRANSMISSION FOR INSTALLATION
Checking Flywheel (Engine-Mounted Models)
Installing Brake And Output Flange
Installing Input Flange (Remote-Mounted)
Installing Range Selector Lever
Installing PTO (Applicable at Any Location)
Installing Shift Modulation Control
Installing Oil Filler Tube
Section III - PREPARING VEHICLE FOR TRANSMISSION INSTALLATION
Checking Flexplate Drive Assembly
(Transmission Engine-Mounted)
Checking Input Drive Components
(Transmission Remote-Mounted)
Checking Chassis And Driveline
Oil Cooler, Oil Filter, And Lines
Checking Controls
Section IV - INSTALLING TRANSMISSION INTO VEHICLE
Handling
Mounting To Engine (Transmission Engine-Mounted)
Installing Transmission Mounting Components
Rear Support Of The CLBT 750DB
Coupling To Engine (Transmission Remote-Mounted)
Coupling To Driveline
Connecting Cooler And Oil Filter Lines
Connecting Range Selector Control
Connecting Hydraulic Retarder Control (CLBT Models)
Connecting Modulator Control
Connecting Power Takeoff Controls
Connecting Parking Brake Controls
Connecting Output Disconnect Controls
(Dropbox Models Only)
Connecting Speedometer Drive
Installing Temperature And Pressure
Sensors And Electrical Components
Filling The Oil System
SECTION V - OIL SYSTEM
Filling The System
Deep Oil Pan
Oil Pan Interchangeability
Spare Parts Information
Installation Of The 81/2 Inch Transmission Oil Pan Assembly and Oil Filler Tube
Oil Level And Oil Dipstick
Checking Transmission Oil Level
Oil Specifications
Oil Change And Filter Replacement
Oil Operating Temperatures
Oil Level For Transfer Gear Housing (Dropbox)
Section VI - DUAL MODE OPERATION
General Description
Functional Operation
Installation
Downshift Inhibiting - CL(B)T 750 (2100 And 2300 rpm Dropbox Models Only)
CLBT 750 Dual Mode Transmission With Dropbox
Section VII - RELEASE OF STEP GOVERNOR VALVE BODY ASSEMBLY P/N 23010297
General
Interchangeability
Spare Parts Information
Section VIII - MANUAL/AUTOMATIC OPERATION ON OIL FIELD EQUIPMENT
General
Mannesmann Rexroth Corporation Shifter
Bennett Shifter
Preventive Maintenance On Shifters
Mode Shift Valves Used In Mannesmann Rexroth And
Bennett Systems
Section IX - TROUBLESHOOTING CLBT 750 WITH DUAL MODE
Pressure Tap Location
Troubleshooting Dual Mode Circuitry
Step Governor Valve