Muncie TG Series Power Take-Off - Truck Equipment Atlas

Quick Facts

Manufacturer: Muncie Power Products
Product Series: TG Series
Product Type: Mechanical-shift power take-off
PTO Design: Modular double-gear, constant-mesh input design
Mounting Patterns: Six-bolt and eight-bolt transmission openings
Housing Material: Die-cast aluminum
Available Speed Ratios: Ten
Available Shift Types: Thirteen
Available Output Options: Ten primary output-shaft options
Available Input Gears: Eleven primary input-gear families, with additional application-specific input configurations
Maximum Standard Intermittent Torque: Up to 285 lb-ft, depending on ratio and application
Maximum Standard Continuous Torque: Up to 200 lb-ft, depending on ratio and application
Approximate Weight: 22 pounds for six-bolt models and 25 pounds for eight-bolt models
Primary Applications: Dump trucks, utility trucks, wreckers, cranes, refuse equipment, snow-and-ice vehicles, and other vocational trucks
Production Status: Current product family

Overview

The Muncie TG Series Power Take-Off is a modular mechanical-shift PTO designed for a wide range of commercial-truck transmissions and vocational applications. Muncie describes it as one of the industry’s most versatile and widely used double-gear PTO designs.

The TG Series can be configured with six- or eight-bolt mounting, ten speed ratios, thirteen shift types, multiple input gears, and direct-pump or driveline outputs. This flexibility allows one product family to serve many manual and application-specific automatic transmission installations.

A die-cast aluminum housing reduces weight while improving heat dissipation. Its modular construction also allows the transmission input gear, ratio gears, shift system, output, and special features to be selected for the individual vehicle.

Correct configuration is essential. Torque, speed, rotation, mounting depth, input gearing, shift type, pump interface, and transmission compatibility must all be confirmed before the PTO is ordered or installed.

Key Characteristics

Mechanical-shift PTO
Double-gear modular architecture
Constant-mesh input gear
Six- and eight-bolt mounting configurations
Die-cast aluminum housing
Ten available speed ratios
Thirteen shift types
Multiple transmission input gears
Direct-pump and driveline outputs
Four primary assembly arrangements
Standard- and deep-mount configurations
Optional pressure lubrication
High-torque configurations for selected ratios
Compact installation envelope
Large shift-cover opening for backlash inspection
Modular construction simplifies repair and conversion

Major Components

Die-cast aluminum housing
Transmission input gear
Input ratio gear
Output gear
Idler gear and shaft
Output shaft
Bearings and thrust washers
Sliding clutch or shift collar
Shift fork and shift rail
Shift cover
Air cylinder, cable, or hydraulic shift components
Output bearing cap
Pump-mount flange or driveline output
Oil seals and O-rings
Mounting gaskets and shims
Mounting studs and fasteners
Pressure-lubrication components when equipped
Engagement indicator or pressure switch when specified

Product Type and Construction

The TG Series is a mechanical-shift PTO with a modular double-gear design. Its input gear remains meshed with the transmission PTO drive gear, while an internal sliding component connects or disconnects the output gear and shaft.

This constant-mesh input arrangement isolates the transmission drive gear from many engagement errors associated with older sliding-input designs. The output still must be engaged according to the instructions for the transmission and shift system.

The die-cast aluminum housing reduces weight, helps dissipate heat, and can reduce transmitted gear noise. Muncie offers the housing in numerous standard, nonstandard, deep-mount, metric-stud, and transmission-specific configurations.

How the Power Take-Off Works

The TG Series mounts over a compatible six- or eight-bolt opening in the transmission. Its input gear meshes continuously with the transmission’s PTO drive gear whenever the transmission gear is rotating.

When the operator activates the PTO control, the shift system moves the internal shift collar or sliding gear into the engaged position. Power then travels through the input gear, ratio gears, and output shaft.

The output shaft powers a directly mounted hydraulic pump or transfers power through an auxiliary driveline. The selected ratio determines whether the output operates slower than, close to, or faster than the speed provided by the transmission PTO drive gear.

When the PTO is disengaged, the internal shift mechanism disconnects the output while the input gear remains in mesh with the transmission drive gear.

Position and Function Within the Vehicle

The TG Series installs on a compatible side or bottom PTO opening on the transmission. Mounting position depends on the transmission design, truck chassis, body equipment, required output rotation, and available clearance.

The PTO can supply mechanical power for:

Hydraulic pumps
Dump-body hoists
Utility and aerial equipment
Wrecker and recovery equipment
Hydraulic cranes
Refuse bodies
Snowplows and spreaders
Air compressors
Vacuum equipment
Liquid-transfer pumps
Winches
Live-floor trailers
Other vocational equipment

Common Specifications

PTO Type: Modular mechanical-shift power take-off
Mounting Patterns: SAE six-bolt and eight-bolt openings
Housing Material: Die-cast aluminum
Approximate Six-Bolt Weight: 22 pounds or 10 kilograms
Approximate Eight-Bolt Weight: 25 pounds or 11.34 kilograms
Available Ratio Codes: 04, 05, 06, 07, 08, 09, 12, 13, 15, and 18
Published Internal Ratio Range: Approximately 0.361:1 to 1.720:1
Maximum Standard Intermittent Torque: 285 lb-ft or 386 N-m
Maximum Standard Continuous Torque: 200 lb-ft or approximately 270 N-m
Maximum Standard Intermittent Power at 1,000 Output RPM: 54 horsepower or 40 kilowatts
Approximate Maximum Advertised Output Speed: 2,500 RPM, subject to application limitations
Shift Systems: Cable, manual air, electric-over-air, hydraulic, electric-hydraulic, Lectra Shift, and application-specific controls
Output Types: Keyed shafts, companion flanges, SAE pump mounts, DIN outputs, and special application-specific configurations
Lubrication: Transmission splash lubrication or optional pressure lubrication, depending on application

Torque, horsepower, speed, and continuous-duty ratings may be reduced by the transmission, input gear, adapter, output, or application. Final specifications must be confirmed for the complete model number.

Power, Torque, Speed, and Operating Capacity

The TG Series has ratio-dependent intermittent and continuous ratings. Standard published ratings range from 175 to 285 lb-ft for intermittent operation and from 123 to 200 lb-ft for continuous operation.

Published standard ratings by ratio include:

04 ratio: 285 lb-ft intermittent and 200 lb-ft continuous
05 ratio: 270 lb-ft intermittent and 189 lb-ft continuous
06 ratio: 245 lb-ft intermittent and 172 lb-ft continuous
07 ratio: 230 lb-ft intermittent and 161 lb-ft continuous
08 ratio: 230 lb-ft intermittent and 161 lb-ft continuous
09 ratio: 205 lb-ft intermittent and 144 lb-ft continuous
12 high-torque ratio: 210 lb-ft intermittent and 147 lb-ft continuous
13 high-torque ratio: 210 lb-ft intermittent and 147 lb-ft continuous
15 high-torque ratio: 195 lb-ft intermittent and 137 lb-ft continuous
18 high-torque ratio: 175 lb-ft intermittent and 123 lb-ft continuous

Some transmission applications, adapters, outputs, and special configurations require lower ratings. The application-specific rating always takes precedence over the general series rating.

Intended Transmission and Mounting Position

The TG Series supports an extensive range of commercial-truck transmissions. Application-specific input gears have been offered for transmissions from manufacturers including Aisin, Allison, Clark, Eaton, Fuller, Mack, Mercedes, New Process, New Venture, Nissan, Spicer, Tremec, Warner, and ZF.

Available mounting configurations include:

SAE six-bolt standard mount
SAE six-bolt nonstandard or deep mount
SAE six-bolt metric-stud mount
SAE six-bolt transmission-specific mount
SAE eight-bolt standard mount
SAE eight-bolt nonstandard or deep mount
SAE eight-bolt extra-deep mount
SAE eight-bolt metric-stud mount
Application-specific Eaton Endurant mount

The complete transmission model and specification must be identified before the input gear, housing depth, spacer, adapter, and mounting kit are selected.

PTO Engagement and Shift System

The TG Series is available with multiple shift systems to accommodate different trucks, air supplies, electrical systems, and operator-control requirements.

Published shift types include:

12-volt manual air shift
24-volt manual air shift
Cable shift
12-volt electric-over-air shift
24-volt electric-over-air shift
12-volt hydraulic shift
24-volt hydraulic shift
Electric-hydraulic shift
Lectra Shift
Manual air without installation components
Constant-mesh configuration
Application-specific Allison controls
Application-specific special shift systems

The operator must follow the engagement procedure for the exact transmission and shift system. Mechanical PTOs should not be shifted while transmission gears are rotating unless the approved application instructions specifically permit that operation.

Power Transfer and Output Design

The TG Series can power a directly mounted hydraulic pump or auxiliary equipment through a driveline output.

Available output families include:

1¼-inch round keyed shaft
1410 Series companion flange
DIN 100 companion flange
DIN 5462 pump output
SAE A pump mounts
SAE B pump mounts
SAE BB pump mounts
SAE C shaft configurations
Special low-box pump mounts
Application-specific splined outputs

The selected output must match the pump or driven equipment’s flange, pilot, shaft, spline, rotation, speed, and torque requirements.

Modular Gearing and Configuration Changes

The TG Series was designed so the PTO can be adapted to a different approved transmission by changing the transmission input gear. Output speed can be changed by replacing the matched input-ratio and output-gear pair.

Ratio gears must be installed as approved matched pairs. Combining unmatched gears can create incorrect tooth contact, output speed, center distance, or mechanical interference.

A configuration change must include a complete review of:

Transmission compatibility
Input-gear design
Housing mounting depth
Required spacers or adapters
Gear backlash
Output speed
Output rotation
Torque and horsepower rating
Continuous-duty capability
Pump or driveline compatibility

Hydraulic Circuit and Equipment Integration

When the TG Series drives a hydraulic pump, output speed, pump displacement, engine speed, hydraulic pressure, required flow, and duty cycle must be evaluated together.

A typical system may include:

Direct-mounted or remotely driven hydraulic pump
Hydraulic reservoir
Suction hose
Pressure and return lines
Directional-control valve
Pressure-relief valve
Hydraulic cylinder or motor
Return filtration
Reservoir breather
Hydraulic-oil cooler
Pressure and temperature monitoring
PTO and body-control interlocks

An incorrect pump displacement, relief setting, PTO ratio, or engine speed can overload the PTO or produce excessive hydraulic heat.

Housing, Shaft, Bearing, and Gear Design

The TG Series uses a lightweight die-cast aluminum housing with an extra-large shift-cover opening. Removing the cover provides access for inspecting the shift mechanism and checking PTO-to-transmission gear backlash.

The internal design includes a transmission input gear, ratio gear, output gear, shift components, bearings, shafts, and an application-specific output assembly.

Optional greaseable output shafts, high-torque gearing, pressure lubrication, clearance idler caps, and remote pressure switches are available in selected configurations.

Controls and Electronic Integration

Control complexity depends on the selected shift type. A basic cable-shift PTO may use a mechanical handle and engagement indicator, while electric-air or electric-hydraulic versions require wiring, switches, valves, and vehicle power.

Possible control components include:

Mechanical cable and control knob
Manual air valve
Electric air solenoid
Hydraulic shift valve
Electric-hydraulic actuator
Dash-mounted PTO switch
Engagement indicator
Pressure switch
Neutral or clutch interlock
Parking-brake interlock
Engine-speed control
Body-equipment interlock

Controls must match the PTO, transmission, electrical voltage, vehicle air system, and completed body equipment.

Efficiency, Heat, and Lubrication

The aluminum housing helps dissipate heat, but correct gear backlash, lubricant level, ratio selection, loading, and output speed remain essential.

Many TG Series configurations receive lubrication from the transmission. Pressure lubrication is optional or required in certain applications, mounting positions, and operating conditions.

Excessive backlash, insufficient backlash, low lubricant, incorrect oil, overspeed, overload, or extended operation beyond the approved rating can create heat and accelerated wear.

Duty Cycle and Operating Conditions

Muncie defines intermittent maximum-load service as five minutes or less within a fifteen-minute operating period. Operation beyond that interval should be evaluated as continuous duty.

Continuous-duty applications commonly require a 30-percent reduction from the intermittent torque and horsepower ratings. Applications operating above 2,000 PTO output RPM should also be treated as continuous duty regardless of operating duration.

Application suitability depends on:

Selected ratio
Transmission-specific rating
Operating torque
Peak and shock loads
Output speed
Length of each operating cycle
Hydraulic-system pressure
Ambient and oil temperature
Pump weight and support
Adapter use
Vehicle movement during operation
Driven-equipment duty cycle

Mounting and Installation

Installation requires matching the TG Series housing and input gear to the transmission, installing the required gaskets or spacers, and establishing the correct gear backlash.

The installer must verify:

Correct transmission application
Correct six- or eight-bolt housing
Correct input gear
Required standard or deep mounting depth
Required adapter, spacer, and stud kit
Correct ratio gears
Proper assembly arrangement
Correct gear backlash
Output rotation
Pump or driveline clearance
Shift-system installation
Pressure-lubrication connections when required
Fastener torque
Transmission-fluid level after installation

Muncie recommends supporting direct-mounted hydraulic pumps when the combined pump, fittings, hose, and oil weight reaches 40 pounds. Operating conditions may require support at a lower weight.

Transmission and Vehicle Compatibility

The TG Series has broad transmission coverage, but every PTO must be configured for a specific transmission and vehicle.

Compatibility depends on:

Transmission manufacturer
Transmission model and specification
PTO-opening location
Six- or eight-bolt mounting pattern
Drive-gear pitch and pressure angle
Input-gear helix and rotation
Required mounting depth
Output-speed requirement
Output rotation
Shift-system compatibility
Lubrication requirements
Frame and exhaust clearance
Body and equipment layout

A PTO should not be selected from the bolt pattern or physical appearance alone.

Pump, Driveshaft, and Driven-Equipment Compatibility

A direct-mounted hydraulic pump must match the PTO’s output flange, pilot, shaft size, spline, rotation, torque rating, and operating-speed range.

Driveline-powered equipment requires a correctly sized output shaft or companion flange, driveshaft, universal joints, guards, slip connection, and support bearings where required.

The PTO, output shaft, pump, driveshaft, and driven equipment must all support the required operating and peak torque. The lowest-rated component limits the system.

Hydraulic Fluid, Filtration, and Reservoir Compatibility

The TG Series normally receives lubricant from the transmission or an approved pressure-lubrication circuit. A PTO-driven hydraulic pump uses a separate hydraulic-fluid circuit.

The hydraulic reservoir, suction hose, return line, filter, breather, cooler, and fluid must support the required pump flow and operating temperature.

Contaminated, aerated, overheated, or incorrect hydraulic fluid can damage the pump and increase the power demand placed on the PTO.

Common Applications

Dump trucks
Dump trailers
Utility trucks
Aerial-lift vehicles
Service trucks
Wreckers and tow trucks
Hydraulic-crane trucks
Refuse vehicles
Snowplows
Salt and material spreaders
Winch trucks
Liquid-transfer equipment
Live-floor systems
Municipal vehicles
Specialized vocational trucks

Advantages

Broad transmission coverage
Six- and eight-bolt mounting options
Ten speed ratios
Thirteen shift types
Multiple input gears
Direct-pump and driveline outputs
Lightweight aluminum housing
Improved heat dissipation
Compact installation envelope
Modular construction
Input gear can be changed for approved transmission conversions
Ratio gears can be changed as matched pairs
Large shift-cover opening simplifies backlash inspection
Optional high-torque and pressure-lube configurations
Long-established parts and service support

Limitations or Considerations

Exact transmission matching is required
Torque capacity varies by ratio and application
Continuous service requires lower ratings in many applications
Gear backlash must be correctly established
Incorrect engagement can damage PTO components
Adapters may reduce torque and horsepower capacity
Some adapters are not approved for continuous duty
Adapters can create frame or exhaust interference
Heavy pumps require structural support
Incorrect ratio selection can overspeed or underspeed equipment
Input and ratio gears must not be mismatched
Pressure lubrication may be required
Six- and eight-bolt models are not automatically interchangeable

Driver and Operator Experience

Operator experience depends on the shift system. Cable-shift models use a mechanical control, while air, electric-air, hydraulic, and electric-hydraulic versions can provide remote or dash-mounted engagement.

Operators should monitor:

PTO engagement confirmation
Engine and PTO speed
Abnormal gear noise
Hydraulic pressure and temperature
Slow equipment operation
Air, transmission-fluid, or hydraulic leaks
Difficulty engaging or disengaging
Pump or driveline vibration
Unexpected disengagement
Control-system warning indicators

PTO Engagement and Operating Procedure

The engagement procedure depends on the transmission and shift system. Operators should follow Muncie’s instructions and the completed vehicle manufacturer’s procedures.

A typical manual-transmission procedure requires the vehicle to be stopped, the parking brake applied, the clutch depressed, and the transmission gears allowed to stop before the PTO is engaged.

After engagement, the clutch can be released according to the approved procedure and engine speed increased only to the level required by the equipment.

Mechanical PTOs should not be forced into engagement. Gear clash, grinding, incomplete engagement, or repeated jumping out of gear indicates a problem that should be corrected before operation continues.

Inspection and Wear Points

PTO housing and mounting surface
Mounting studs, nuts, and cap screws
Mounting gaskets and shims
Transmission input gear
Ratio and output gears
Gear backlash
Bearings and thrust washers
Shift fork, rail, collar, and detents
Shift cover and gasket
Output shaft and splines
Pump flange and pilot
Cable, air, hydraulic, or electrical controls
Pressure-lube lines when equipped
Pump support bracket
Auxiliary driveline and guards
Oil seals and O-rings

Lubrication Requirements

The TG Series must receive the correct transmission lubricant at the required level. Some applications rely on splash lubrication, while others require or benefit from pressure lubrication.

The transmission-fluid level should be rechecked after PTO installation because the additional housing can change the total lubricant requirement.

Pressure-lubrication lines should be inspected for leaks, restrictions, abrasion, incorrect routing, and damage. Greaseable output configurations must be serviced according to the instructions for the exact output.

Maintenance and Ownership Notes

Routine maintenance should include checking mounting fasteners, lubricant level, output-shaft play, shift operation, gear noise, pump support, control lines, wiring, and auxiliary-driveline components.

Newly installed or serviced PTOs should be rechecked after their initial operating period. Gasket compression, vibration, and thermal cycling can affect mounting-fastener retention and backlash.

The TG Series’ modular design allows many components and configurations to be serviced or converted. Any conversion must use the approved input gear, matched ratio gears, output components, and application instructions.

Common PTO and Hydraulic-System Problems

PTO will not engage: A misadjusted cable, insufficient air or hydraulic pressure, failed solenoid, damaged shift fork, worn collar, incorrect interlock status, or internal damage may prevent engagement.
PTO will not disengage: A binding cable, trapped air or hydraulic pressure, sticking valve, damaged shift components, or internal gear damage may keep the PTO engaged.
Gear whine: Insufficient backlash, incorrect input gearing, bearing problems, or an overly tight installation can produce a whining sound.
Gear clatter: Excessive backlash, loose mounting hardware, worn gears, or an installation that is too loose can produce clattering.
PTO jumps out of gear: Worn shift-rail detents, a damaged shift fork, incorrect linkage adjustment, incomplete engagement, or worn gear teeth may cause disengagement.
Transmission-fluid leakage: Damaged gaskets, loose fasteners, worn seals, cracked housing components, or excessive case pressure may allow leakage.
Overheating: Excessive speed, overloading, incorrect backlash, low lubricant, restricted pressure lubrication, or continuous operation beyond the approved rating may generate heat.
Slow hydraulic operation: Incorrect PTO ratio, low engine speed, worn pump components, suction restriction, low hydraulic-fluid level, or internal leakage may reduce system performance.
Housing or transmission damage: Unsupported pump weight, driveline misalignment, loose fasteners, an incorrect adapter, or chassis interference may overload the PTO installation.

Safety and Service Precautions

Before servicing the PTO or hydraulic equipment, shut down the engine, secure the vehicle, relieve hydraulic and pneumatic pressure, and prevent the powered equipment from moving.

Never work beneath a raised dump body, hoist, crane, aerial device, or hydraulically supported component without the manufacturer’s approved mechanical blocking or support system.

Rotating PTO shafts and auxiliary drivelines must be properly guarded. Hands, clothing, tools, and loose objects must be kept away from rotating components.

PTO installation, backlash adjustment, gear conversion, and transmission work should be completed by qualified personnel using current Muncie instructions for the exact model and application.

Identification Information

The complete Muncie model number identifies the PTO series, mounting configuration, transmission input gear, ratio, shift system, assembly arrangement, output, and special features.

Record the following information before ordering a PTO or replacement parts:

Complete Muncie PTO model number
PTO tag and serial information
Vehicle identification number
Truck manufacturer and model
Transmission manufacturer
Complete transmission model and specification
Six- or eight-bolt mounting configuration
Input-gear designation
Ratio code
Shift-type code
Assembly arrangement
Output-option code
Special-feature code
Adapter, spacer, and mounting-kit information
Hydraulic-pump model
Driven-equipment requirements

Do not identify a replacement TG Series PTO by appearance or bolt pattern alone.

Buying Considerations

Verify the exact transmission model and specification
Confirm the correct six- or eight-bolt mounting arrangement
Select the approved input gear
Determine the required output speed
Calculate intermittent and continuous torque
Confirm the driven-equipment duty cycle
Choose the correct output rotation
Match the pump flange and shaft
Select the required shift system
Determine whether pressure lubrication is required
Identify required adapters, spacers, and stud kits
Check frame, exhaust, and body clearance
Evaluate direct-mounted pump weight
Install a pump support bracket when required
Confirm the effect of any adapter on the PTO rating
Use Muncie’s PTO Builder or an authorized distributor
Choose an experienced PTO and hydraulic-system installer

Variants and Configurations

Six-bolt standard-mount models
Six-bolt deep- and nonstandard-mount models
Eight-bolt standard-mount models
Eight-bolt deep- and extra-deep-mount models
Metric-stud configurations
Ten ratio options
Multiple transmission input gears
Four assembly arrangements
Cable-shift models
Manual-air models
Electric-over-air models
Hydraulic-shift models
Electric-hydraulic models
Lectra Shift models
Constant-mesh configuration
Pressure-lubricated models
High-torque models
Greaseable output-shaft configurations
Keyed and companion-flange driveline outputs
SAE and DIN direct-pump outputs

Comparison to Similar Equipment

Compared with the Muncie CS6 Series Power Take-Off, the TG Series is primarily a mechanically shifted PTO. The CS6 uses an internal clutch and drag brake for controlled engagement in compatible applications.

Compared with the Muncie FR6Q Power Take-Off, the TG Series supports a much broader range of transmission families, mounting arrangements, ratios, and controls. The FR6Q is designed specifically for selected Ford TorqShift applications.

Compared with the Parker Chelsea 442 Series Power Take-Off, both are versatile mechanical PTO families available with numerous ratios, shifts, and outputs. Their model numbers, gears, mounting components, controls, and replacement parts are manufacturer-specific.

Compared with the Parker Chelsea 489 Series Power Take-Off, the TG Series offers both six- and eight-bolt housing configurations. The Chelsea 489 primarily uses a one-piece eight-bolt housing.

Best Fit For

Manual-transmission vocational trucks
Approved six- and eight-bolt transmission applications
Dump trucks and trailers
Utility and aerial equipment
Wrecker and recovery trucks
Hydraulic-crane trucks
Snow-and-ice-control vehicles
Refuse and municipal equipment
Applications requiring multiple speed choices
Fleets wanting a modular and serviceable PTO
Direct-mounted hydraulic pumps
Auxiliary-driveline applications

Related Vehicle and Trailer Types

Related Truck and Trailer Models

Related PTO and Hydraulic System Types

Related PTO and Hydraulic Products

Related Equipment Systems

Related Guides

Regulatory and Compliance Notes

PTO and hydraulic-system installations must preserve the vehicle’s braking, steering, transmission, driveline, electrical, exhaust, emissions, fuel-system, and structural integrity.

The completed vehicle must remain within its axle, frame, tire, wheel, transmission, driveline, and gross vehicle weight ratings. Installing a PTO does not increase any certified vehicle rating.

Rotating shafts, hydraulic hoses, raised bodies, cranes, outriggers, and other powered equipment may be subject to workplace-safety, inspection, guarding, and operating requirements.

The final-stage manufacturer or equipment installer is responsible for ensuring that the completed vehicle complies with applicable regulations and certification requirements.

Real World Operating Notes

The TG Series is highly configurable, but that flexibility makes the complete model number especially important. Two TG units may have different housings, input gears, ratios, controls, outputs, and ratings.

Backlash should be checked after the PTO is mounted. A noticeable whine can indicate insufficient backlash, while clatter can indicate excessive backlash.

Gear adapters can solve rotation, clearance, or mounting-depth problems, but they may move the PTO closer to frame or exhaust components and may reduce its torque capacity.

When changing ratios, both gears in the approved ratio pair must be replaced. Changing only one ratio gear can create an incompatible internal gear combination.

Frequently Asked Questions

What is the Muncie TG Series PTO?

It is a modular mechanical-shift power take-off available for numerous six- and eight-bolt commercial-truck transmission applications.

Is the TG Series a six-bolt or eight-bolt PTO?

It is available in both six- and eight-bolt configurations, including standard, deep, nonstandard, and transmission-specific mounting arrangements.

How many speed ratios are available?

Muncie offers ten primary TG Series ratio codes ranging from approximately 0.361:1 to 1.720:1.

How much torque can the TG Series handle?

The highest standard published rating is 285 lb-ft for intermittent operation and 200 lb-ft for continuous operation. Actual ratings depend on the ratio, transmission, adapter, output, and application.

Can the TG Series directly mount a hydraulic pump?

Yes. Multiple SAE and DIN direct-pump outputs are available. The pump flange, shaft, rotation, weight, and operating requirements must match the PTO.

Can it power equipment through a driveshaft?

Yes. Keyed shafts and companion-flange outputs are available for properly designed auxiliary-driveline systems.

Does the TG Series require backlash adjustment?

Yes. Correct backlash must be established between the transmission drive gear and PTO input gear during installation.

Can the PTO ratio be changed?

Yes, in approved configurations. The matched input-ratio gear and output gear must be replaced together, and the complete application must be rechecked.

Is the TG Series suitable for continuous operation?

It may be used in approved continuous-duty applications at the applicable reduced rating. Muncie commonly requires a 30-percent reduction from the intermittent rating.

How is the correct TG Series PTO identified?

Use the complete Muncie model number, transmission identification, mounting configuration, input gear, ratio, shift system, assembly arrangement, output, and special-feature code.

Availability and Where to Find

Muncie TG Series PTOs, installation kits, input gears, ratio gears, shift controls, output components, adapters, and service parts are available through Muncie Power distributors, commercial-truck dealers, hydraulic-equipment suppliers, body builders, and vocational-truck installers.

Availability depends on the transmission, mounting pattern, input gear, ratio, shift system, assembly arrangement, output, and special features.

Current product information, application assistance, configuration tools, technical literature, and distributor resources are available through the Muncie Power Products website.

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