Mule Models, Manuals and Publications

M274 Mechanical Mule Knowledge Base
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Chuck W.
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Mule Models, Manuals and Publications

Post by Chuck W. » Thu Mar 06, 2014 10:58 am

All M274 TM's are available for FREE download at Michael White's web page: http://www.whiteworks.us/TheMule/index.html

This information may help new mule owners

Mule Models
G823 4 Wheel Steering

M274
Contract: DA-20-089-ORD-35522
Willys
2,452 units built between 1956 – 1960
A04-53-1 engine (4 cyl)
TM 9-7101-35
TM 9-2805-211

M274-A1
Contract: DA-33-019-ODR-4051
Willys
1,905 units built between 1962 – 1964
A04-53-2 engine (4 cyl)
TM 9-7101-35
TM 9-2805-211

M274-A2
Contract: DA-20-113-AMC-03624 (T)
Bowen-McLaughlin-York – Contract No. DA-20-113-AMC-03624 (T)
3,609 units built between 1964 – 1967
A042 engine (2 cyl)
TM 5-2805-213-14 / 24P

M274-A3
Contract : DA-11-184-AMC-39(T) (possible – not confirmed)
Baifield Industries (possible – not confirmed)
Result of installation of A042 engine into M274
A042 engine (2 cyl)
TM 5-2805-213-14 / 24P
Source change 1, TM 9-2 320-213-20, 14 FEB ‘66

M274-A4
(Possible Kaiser Jeep Corp. contract)
Result of installation of A042 engine into M274-A1
A042 engine (2 cyl)
TM 5-2805-213-14 / 24P
Source change 1, TM 9-2 320-213-20, 14 FEB ‘66


G400 2 Wheel Steering

M274-A5
Contract: DA-20-113-AMC-07129 (T)
Baifield Industries – Contract No. DA-20-113-AMC-07129 (T)
2,400 units built between 1965 – 1969
A042 engine (2 cyl)
TM 5-2805-213-14 / 24P

M274-A5
Contract: DAAED7-68-C-1572
Brunswick Corp. Technical Products Div
874 units built between 1968 - 1970
A042 engine (2 cyl)
TM-2805-213-14 / 24P

MANUALS
TRUCK, PLATFORM UTILITY: ½ TON, 4x4, M274A2, M274A3, M274A4, AND M274A4



TM 9-2805-213-14 Engine Gasoline 14HP Support Maintenance Manual

TM 5-2805-213-24 Engine Gasoline 14HP Technical Manual

TM 9-2320-246-10 Platform Utility Operators Manual

TM 9-2320-246-20 Organizational Maintenance Manual

TM 9-2320-246-20P Platform Utility Repair Parts & Special Tools List

TM 9-2320-246-34 Direct and General Support Maintenance Manual for One Half Ton 4X4

TM 9-2320-246-34P Direct and General Support Maintenance Repair Parts for One Half Ton 4x4

Manual List:
OPERATORS MANUALS:
TM 9-2320-246-10: Operator’s Manual for Truck, Platform Utility: M274A2, M274A3, M274A5 Dated 4-1967
LUBRICATION ORDERS:
LO 9-2320-213-12: Truck, Platform Utility: 1/2 Ton, 4x4, M274 and M274A1, Dated 7-1963
LO 5-2805-213-12: Engine, Gasoline: 14 HO (Military Standard Model AO42), Dated June 5, 1989
DIRECT SUPPORT AND GENERAL SUPPORT MANTENANCE MANUALS:
TM 9-2320-246-34: Direct Support and General Support Maintenance Manual for Truck, Platform utility: M274A2, M274A4 Dated 12-1967
TM 9-2320-246-34P: Direct Support and General Support Maintenance Repair Parts and Special Tools List for Truck, Platform utility: M274A2, M274A4 Dated 12-1969
ORGANIZATIONAL MAINTENANCE MANUALS:
TM 9-2320-246-20: Organizational Maintenance Manual for Truck, Platform utility: M274A2, M274A3, M274A4, M274A5 Dated 7-1967

TM 9-2320-246-20P: Organizational Maintenance Repair Parts and Special Tools List for Truck, Platform utility: M274A2, M274A3, M274A4, M274A5 Dated 7-1967

ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MANTENANCE MANUALS:
TM 5-2805-213-24P: Organizational, Direct Support and General Support Maintenance Repair parts and Specials Tools List, Engine, Gasoline, 14 HP (Military Standard Model AO42) Used on Truck Platform 1/2 Ton M274A2, Dated 2-1984
OPERATOR, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MANTENANCE MANUALS:
TM 5-2805-213-14: Operator, Organizational, Direct Support and General Support Maintenance Manual for Engine, Gasoline: 14 HP (Military Standard AO42), Dated 7-1969
FIELD AND DEPOT MANTENANCE MANUALS:
TM 9-7101-35: Field and Depot Maintenance Engine and Clutch (Willys Model AO-4-53) Dated 4-1958
TM 9-2910-202-35: Field and Depot Maintenance for Carburetor Assembly 2910-607-3530 (Tillotson Model MB-107A) used on AO-53 and AO-53-1, Dated 7-1958
TM 9-2910-202-35P: Field and Depot Maintenance Repair Parts Allowances for Carburetor Assembly 2910-607-3530 (Tillotson Model MB-107A) used on AO-53 and AO-53-1, Dated 7-1958
TM 9-2805-211-35P: Field and Depot Maintenance Repair Parts and Special Tools List for Engine, Gasoline: AO- 53 and AO-53-1, Dated 7-1958
TM 9-2910-203-35P: Field and Depot Maintenance Repair Parts Allowances for Fuel Pump 2910-587-1430 (A. C. model NO. 4426-FD used on AO-53 and AO-53-1, Dated 7-1958
TM 9-2920-205-35P: Field and Depot Maintenance Repair Parts Allowances for Magneto 2920-698-2931 ( J. I. Case Model No. 48) used on AO-53 and AO-53-1, Dated 7-1958
MISC MULE RELATED MANUALS:

TB 43-0209: Proper 3 color camo pattern for M274, Dated 10-1976

TM 9-1425-470-12: Operator's and Organizational Maintenance Manual or TOW Heavy Antitank / Assault Weapon System, Dated 1-1974

TM 9-1425-470-34: Direct Support and General Support Maintenance Manual for TOW Heavy Antitank / Assault Weapon System, Dated 4-1971




Publications:
U.S. Army - "Army Motors"
Issue 68 - 1958
Issue 70 - 1958
Issue 71 - 1958
issue 74 - 1958
Issue 75 - 1959
issue 96 - 1960
issue 97 - 1961
issue 100 - 1961
issue 102 - 1961
issue 104 - 1961
issue 126 - 1963
issue 140 - 1964
issue 141 - 1964
issue 164 - 1966
issue 211 - 1970

Leatherneck Magazine - July, 1958 - "The Mule"

MVPA "Supply Line" Issue 121 Fall 2007 - David Doyle "Tiny - but powerful! The M274 Mule"

NASA - April 1966, "Vehicle Lunarization Study"


Most of these manuals and publications can be found at Mike White's excellent mule web site : http://www.whiteworks.us/TheMule/
Last edited by Chuck W. on Tue Mar 22, 2016 2:02 pm, edited 1 time in total.

nw5s
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Re: Mule Models, Manuals and Publications

Post by nw5s » Thu Mar 06, 2014 2:49 pm

Thanks, Chuck! I stumbled across this document today. Nothing new here other than maybe some interesting history about testing the AO42 engine for use in a mule.

Cheers!

Bruce
------------
Bruce/nw5s
1968 M274A5 Automatic Sprinkler Corp

Chuck W.
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Re: Mule Models, Manuals and Publications

Post by Chuck W. » Thu Mar 06, 2014 3:05 pm

Thanks, Bruce. That is a very interesting document, the evaluation of the AO42 engine as a replacement for the AO53. I like the conclusions!

nw5s
G-Master Sergeant
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Posts: 107
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Re: Mule Models, Manuals and Publications

Post by nw5s » Thu Mar 06, 2014 9:09 pm

The evaluation mentions that a magneto failed on the AO42 engine during the test... then a modified AO53 magneto was used to complete the test. Any idea what modifications were made to the 4 cylinder mag to make it work on the 2 cylinder motor?
------------
Bruce/nw5s
1968 M274A5 Automatic Sprinkler Corp

Chuck W.
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Re: Mule Models, Manuals and Publications

Post by Chuck W. » Fri Mar 07, 2014 9:02 am

That WOULD be interesting to know! From what little work I have done on the 4-cylinder magneto, I would think it would have been a job to make it work, as the 4-cylinder appears to have an external impulse unit and a tang drive instead of a gear drive. I think it rotates in the opposite direction, if that would even matter.
On the other hand, it may have been as simple as making a different drive gear adapter, since the case and mounting appear to be the same size!

Image

Image


nw5s
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Re: Mule Models, Manuals and Publications

Post by nw5s » Fri Mar 07, 2014 9:52 am

Interesting indeed! Since the 2 cylinder mags are becoming harder and harder to find, modifying 4 cylinder mags to fit on 2 cylinder motors might be of some benefit.
------------
Bruce/nw5s
1968 M274A5 Automatic Sprinkler Corp

Chuck W.
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Re: Mule Models, Manuals and Publications

Post by Chuck W. » Fri Mar 07, 2014 10:19 am

Well, one major problem with the 4-cylinder mag is that the plug wires come out the top of the cap, not the side, just like the 2-cylinder gen set mag, so you'd still need to figure out how to get the wires through the shrouds and down to the plugs. In that case, you might as well use the 2-cylinder gen set mags :D

nw5s
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Re: Mule Models, Manuals and Publications

Post by nw5s » Fri Mar 07, 2014 11:29 am

Good info, Chuck. Thanks! I believe I could sit around discussing mule stuff all day. At any rate... I've stumbled across a source for the 4 cylinder Slick magnetos, NOS. Maybe some other folks know about it? Info follows:

Rudy Calin rudy@rebuiltmags.com
http://www.rebuiltmags.com/
651-233-6655.

He wants $250 per mag.

Bruce
PS. I have no affiliation with Rudy or his business. Just happened to stumble across his web site and asked him about the electronic ignition magnetos. He seemed quite familiar with mule magnetos.
------------
Bruce/nw5s
1968 M274A5 Automatic Sprinkler Corp

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