Description
This 200+ page, Allison Powershift Transmission 3340 3461 Series Service Manual is a reproduction of the original, out of print manual. This manual includes many fold out 11 x 17 pages showing detailed diagrams to assist you in troubleshooting and repair.
This Allison Transmission Service Manual 3340 & 3461 Series provides detailed service information, step-by-step repair instruction and maintenance specifications for the following Allison Powershift transmissions:
CT, CLT, 3340, 3360, 3440
CT, CLT, VCLT, 3341, 3441
CT, CLT, VCLT, 3361, 3461
The following excerpt is a sample of content from the manual. This section discusses 2nd gear torque path on a 6 speed transmission.
c. Second-gear Operation
(1) In second gear operation, the overdrive clutch and low-range clutch are engaged. Torque from the engine is transmitted hydraulically through the converter to the splitter planetary carrier. The carrier shaft is splined to the converter turbine, causing the splitter planetary to rotate at turbine speed. In 3360 models, torque from the converter
turbine is transmitted to the splitter planetary through the turbine output shaft. The forward end of the shaft is splined to the turbine and the rear end is splined to the splitter planetary carrier.
(2) The overdrive clutch is engaged and holds the splitter clutch housing and integral sun gear stationary. Rotation of the splitter planetary carrier drives the attached pinions around the stationary sun gear. Rotation of the pinions overdrives the splitter ring gear and the attached splitter output shaft.
(3) The low-range sun gear is splined to the splitter output shaft. Engagement of the low-range clutch holds the low-range ring gear stationary. The rotating low-range sun gear drives the pinions within the circumference of the stationary low-range ring gear. The pinions, attached tothe low-range carrier, drive the carrier and integral output shaft.
The table of contents for this Allison Powershift Transmission 3340 3461 Series Service Manual includes:
General Information:
Scope of Manual, Model Designation, Supplementary Information, Ordering Parts, Design Features, Operating Instructions, Specifications, Data
Description and Operation:
Mounting, Input Drive, Torqmatic Converters, Lockup Clutch, Planetary Gearing, Splitter, Range Clutches, Oil Pumps, Parking Brakes, Speedometer Drive, Transfer Gears, Output Shaft, Valve Body Assemblies, Covers, Housings, Four-Speed Hydraulic System without Lockup, Four-Speed Hydraulic System with Lockup, Six-Speed Hydraulic System, Variable-Capacity, Torque Paths- General, Four-Speed Torque Paths, Six-Speed Torque Paths.
Preventative Maintenance:
Periodic Inspection, Cleaning, Checking Oil Level, Maintenance Intervals, Changing Oil, Filter, CHecking and Adjusting Linkage, Pressures, Temperatures, Transmission Stall Test, Preservation, Storage, Troubleshooting, Oil Passage Identification.
General Overhaul Information:
Model Changes, Tools, Equipment, Replacement Parts, Careful Handling, Cleaning, Inspection, Removing & Installing Transmission, Removing & Installing Interference-Fit Flanges and Shim Selection, Wear Limits, Spring Specifications, Determining PTO Backlash, Torque Specifications.
Disassembly of Transmission into Subassemblies:
Removal of Input Components, Removal of Converter Elements, External Control Valve, Piping, Removal of Oil Pan, Removal of Control Valve Body Assembly, Removal of Rear Bearing Retainer, Removal of Transfer Gear Housing Components, Removal of Range Gearing and Clutches.
Rebuild of Subassemblies:
Preliminary Information, Converter Cover, Converter Drive Cover, Variable-Pitch Stator, Oil Transfer Cover, Stator Control Valve Body, Splitter Planetary Carrier, Splitter Clutch, Piston Housing, Clutch Piston, Input-Driven Pump, Torque Converter Housing, 4-Speed CT Control Valve Body Oil Transfer Plate, 4-Speed CLT Control Valve Body Oil Transfer Plate, Six-Speed Control Valve Body, Output Flange, Brake Drum, Standard Rear Bearing Retainer, Heavy-Duty Rear Bearing Retainer, Output Disconnect, Transfer Gear Housing, Reverse-Range Planetary Carrier, Ring Gear, Clutch Plate, Low-Range Planetary Carrier, Intermediate-Range Planetary Carrier, High-Range Clutch, Transmission Housing, Splitter Output Shaft, Clutch Pack Clearance Procedure, Torque Specifications.
Assembly of Transmission from Subassemblies:
General Information for FInal Assembly, Installation of Range Gearing & Clutches, Gasket Selection Procedure, Installation of Rear Bearing Retainer, Installation of Transfer Gear Housing, Installation of Splitter Clutches, Planetary and Converter Housing, Installation of Converter Elements, Installation of Turbine and Input Components, Installation of Turbine and Input Components, Installation of Control Valve Body Assembly, Installation of Oil, Installation of External Control Valve and Piping.
Wear Limits and Spring Data:
Wear Limits Data, Wear Limits Chart, Spring Data, Spring Chart
