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ALLIS CHALMERS HD5 Crawler Tractor Parts Manual
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HD -5
crawler tractor
parts catalog
(INCLUDES ALL SERIAL NOS.)
Form 70626003 English
(Same as 0626003-8)
A WARNING
STUDY THE OPERATION AND MAINTENANCE
INSTRUCTION MANUAL THROUGH BEFORE STARTING,
OPERATING, MAINTAINING, FUELING OR SERVICING THIS
MACHINE.

Notice:
This machine has a Detroit Diesel engine.
MinnPar does not offer any of the engine parts.
Please consult a Detroit Diesel dealer

TRACTOR MODELS
Several distinct models of the HD5 tractor are available and this Repair Parts Catalog has been prepared to
show the parts for each. All parts listed herein, which have no specific usage indicated, are applicable to
all models. Those parts which are used only on specific models are so indicated.
The currently available models and their identifying symbols are indicated below. This symbol is stamped
in front of the tractor serial number on each model.
DESCRIPTION
MODEL SYMBOL
Short Track(33 links), Oscillating Truck Frames, 44" Tread
HD5A
Short Track (33 links), Oscillating Truck Frames, 60" Tread HD5B
Long Track (37 links), Oscillating Truck Frames, 44" Tread HD5D
Long Track (37 links), Oscillating Truck Frames, 60" Tread HD5E
Long Track (37 links), Rigid Truck Frames, 60" Tread HD5F
Long Track (37 links), Rigid Truck Frames, 60" Tread, equipped
with TRACTOMOTIVE Front Shovel*
HD5G
*Order all parts for TRACTOMOTIVE SHOVEL and Hydraulic System from Tracto-
motive Corporation, Deerfield, Illinois or from nearest authorized Dealer.
MODEL HD5A (44" Tread, Short Track)
MODEL HD5B (60" Tread, Short Track)
MODEL HD5D (44" Tread, Long Track)
MODEL HD5E (60" Tread, Long Track)
MODEL HD5F (Without Shovel)
MODEL HD5G (With Shovel)
SERIAL NUMBERS '
The tractor serial number is stamped on the rear face of the steering clutch housing at the upper right hand
corner; also on a small plate attached to the cowl, facing the operator.
The engine serial number is stamped on the left side of the cylinder block at the upper right hand corner.
Effective approximately August 1948, the engine serial numbering system was changed as a measure toward
simplification. Under the old system the prefix "271-" (followed by the serial number) was used to denote
the 2-cylinder engines (Example 271-8325). Under the new system the prefix"2A" serves the same purpose.
However, with the new prefix, the serial numbers were started over again (Example: 2A-021).
1

Air Pre-Cleaner Extension
Air Cleaners
Air Heater
Balance Shaft
Batteries and Cables
Battery Box
ALPHABETICAL
163
48
59
16
130
123
INDEX
Injector
Injector Control
Instruments
Lights and Wiring
Main Bearings
Main Frame
52
56
136
134
11
108
Bevel Gear and Shaft 91 Muffler 57
Blower 47 Numerical Index 175
Bottom Guards 157 Odometer 138
Brakes 101 Oil. By-Pass Valve 23
Breather Tube 41 Oil Cooler 19
Bumpers 108 Oil Filler 23
Cab 155 Oil Filters 22, 25
Cab Curtains 151 Oil Pan 18
Cab Enclosures 153 Oil Pump 21
Camshaft 16 Painting and Marking 102
Canopy 149 Piston 13
Connecting Rod 13 Power Pulley 145
Cowl 127 Power Take-Off 141,147
Crankcase Guard 108, 157 Primer 61
Crankshaft 11 Radiator and Water Connections 69
Cylinder Block 9 Radiator Curtain 160
Cylinder Head 17 Radiator Guard 159
Cylinder Liner 13 Radiator Screens 160
Drawbar 129 Radiator Shell 128
Engine and Mounting 5 Rear Fenders 125
Engine Clutch 71 Rear Flood Light 140
Engine Clutch Control 77 Rigid Beam 107
Engine Controls 43, 45 Rocker Cover 18
Engine Coolant Heater 168 Seat ' 123
Equalizing Spring 105, 106 Service Kits 171
Fan 66 Special Attachments 137 thru 170
Final Drive 94 thru 99 Starter 131
Floor 125 Steering Clutch and Final Drive Housing . . . 88
Flywheel 11 Steering Clutches 91
Flywheel Housing 6 Steerilg Clutch Throwout 93
Front Fenders 127 Street Plate 161
Front Hydraulic Pump Mounting 161 Tail Light 139
Front Pull Hook 108 Timing Gears 11, 16, 47
Fuel Filters 27, 30, 31 Timing Gear Cover
7
Fuel Pressure Gauge 137 Tools 165
Fuel Pump 33 Tool Box 123
Fuel Tank and Lines 37 Track 121
Fuel Tank Guard 158 Track Idler 111
Gear Shift 85 Track Release 109
'Generator 132,133 Track Supporting Roller 117
Governor 39 Transmission 81
Grille Screen 160 Truck Frame 119
Grousers 161 Truck Wheels 113, 115
Hood 127 Universal Joint 78, 79
Hood Side Plates 156 Valve Mechanism 15
Hour Meter 162 Water Pump 67
4

ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PART
NUMBER
052269
054058
035712
035190
904208
052148
035236
035190
904208
035073
904208
911043
060618
911044
904209
060619
911044
904209
075620
064531
QTY.
1
1
2
2
4
1
2
2
4
8
8
4
2
2
2
2
2
2
4
8
-4
4
4
ENGINE AND- MOUNTING
DESCRIPTION
KIT NUMBER
ENGINE ASSEMBLY (Includes BLOWER, GOVERNOR, fuel PUMP
and water PUMP. Does not include air CLEANER, FAN, fuel
FILTER, oil FILTER, GENERATOR, MUFFLER or starting
MOTOR)
SUPPORT, engine, rear left
CAPSCREW, 1/2"NC x 2-1/4"
CAPSCREW, 1/2"NC x 1-1/2"
LOCKWASHER, 1/2"
SUPPORT, engine, rear right
CAPSCREW, 1/2"NC x 1-3/4"
CAPSCREW, 1/2"NC x 1-1/2"
LOCKWASHER, 1/2"
CAPSCREW, engine mounting (1/2"NF x 1-3/4")
LOCKWASHER, 1/2"
NUT, 1/2"NF (Model HD5G only)
NOTE: Items 9 thru 15 comprise the FIRST TYPE ENGINE
MOUNTING as used on tractors prior to serial No.
25364. Those items shown without part numbers are
no longer serviced and must be replaced with items 16
thru 19.
STUD, front engine mounting (5/8"NF x 4-7/16")
NUT, 5/8"NF
LOCKWASHER, 5/8"
STUD, rear engine mounting (5/8"NF x 3-5/16")
NUT, 5/8"NF
LOCKWASHER, 5/8"
WASHER, spacing, engine mounting
WASHER, plain (1/4" thick)
CAGE, engine mounting pads
PAD, rebound, engine mounting
PAD, shock, engine mounting
(Continued)
5

ENGINE AND MOUNTING (Continued)
ITEM
16
17
18
PART
NUMBER
082451
083404
082452
911044
QTY.
4
4
2
2
DESCRIPTION KIT NUMBER
NOTE: Items 16 thru 19 comprise the SECOND TYPE ENGINE
MOUNTING effective with tractor - serial No. 25364.
MOUNTING, engine
BRACKET, engine mounting
STUD, front engine mounting (5/8"NF x 3-7/8")
NUT, 5/8"NF
904209 2 LOCKWASHER, 5/8"
19 082453 2 STUD, rear engine mounting (5/8"NF x 2-3/4")
911044 2 NUT, 5/8"NF
904209 2 LOCKWASHER, 5/8"
20 052239 4 PLATE, engine mounting (Additional 4 used on Model HD5G)
21 052215 1 SUPPORT, engine, front
22 036707 2 CAPSCREW, 5/8"NC x 1-3/4"
904209 2 LOCKWASHER, 5/8"
ITEM
PART
NUMBER QTY.
FLYWHEEL HOUSING
DESCRIPTION KIT NUMBER
1 5165829 1 HOUSING ASSEMBLY, flywheel (Includes item 5)
912726 1 PLUG. pipe, 3/4"NPT
2 041916 11 CAPSCREW, 7/16"NC x 2"
3 041250 1 CAPSCREW, 7/16"NC x 1-1/4"
904207 11 LOCKWASHER, 7/16"
4 2 PIN, dowel, flywheel housing to block (See CYLINDER BLOCK)
5 1 SEAL, crankshaft, rear (See CRANKSHAFT)
6 5152525 1 GASKET, flywheel housing to block 064349
7 5169101 1 COVER, balance weight
8 040382 3 CAPSCREW, 3/8"NC x 1-3/8"
9 056721 1 CAPSCREW, 3/8"NC x 2-1/2"
904206 4 LOCKWASHER, 3/8"
10 5152413 1 GASKET, balance weight cover 064349

TIMING GEAR COVER
PART
II EM NUMBER QTY. DESCRIPTION
1 5165835 1 COVER ASSEMBLY (Includes item 8)
2 041916 4 CAPSCREW, 7/16"NC x 2"
3 047558 2 CAPSCREW, 7/16"NC x 2-1/4"
4 052352 1 CAPSCREW, 5/16"NC x 4-3/4"
5 013059 1 CAPSCREW, 3/8"NC x 2"
6 040427 2 CAPSCREW, 3/8"NF x 5-1/2" (Also attaches generator
bracket)
903774 11 CAPSCREW, 5/16"NC x 2"
904205 12 LOCKWASHER, 5/16"
904206 3 LOCKWASHER, 3/8"
904207 6 LOCKWASHER, 7/16"
912298 2 WASHER, plain, SAE std., 7/16"
911041 2 NUT, 3/8"NF
KIT NUMBER
7 5156192 1 GASKET 064349
8 1 SEAL, oil (See CRANKSHAFT AND FLYWHEEL)
7

03
18 17
15
CYLINDER BLOCK

ITEM
PART
NUMBER QTY.
CYLINDER BLOCK
DESCRIPTION KIT NUMBER
1 5189873 1 BLOCK ASSEMBLY, cylinder (Includes items 2 thru 13A and hard-
ware indented below)( When required for engines prior to #271-
12671 also order 1 DIPSTICK 5174696, 1 GUIDE 5174687 and
1 GASKET SET 5192432)
915433 1 COCK, water drain, 1/4"NPT
901666 6 PLUG, pipe, ctsk-hd., 1"NPT
901667 1 PLUG, pipe, ctsk-hd., 1-1/4"NPT
911381 4 PLUG, pipe, s lotted -hd. , 1 /4 "NPT
oil passage plugs
904260 4 PLUG, pipe, ctsk-hd., 3/8"NPT
2 5151272 2 PLUG (plain, solid, 11/32" diam. x 7/32" long)(oil passage)(Used
on engines prior to #2A-5794)
3 5151576 2 PIN, dowel, flywheel housing to block (1/2" x 1-5/8")
4 5156150 2 PIN, dowel, timing gear cover to block (hollow, 5/8" x 11/16")
5 5158674 3 CAP, main bearing (When required for engines prior to #271-6531
also order 2 BOLTS 5152149 with each CAP)
5152068 6 BOLT (5/8"NC x 4-5/16")(Engines prior to #271-6531)
6 5152149
{
6 BOLT (5/8"NC x 4-3/4")(Engines #271-6531 thru #2A-37701)
5189841 6 . BOLT (5/8"NC x 5-1/8")(Effective with engine #2A-37702)
904209 6 LOCKWASHER, 5/8"
7 4 PIN, dowel, rear main bearing thrust washer (See CRANKSHAFT)
8 3 STUD, fuel pump attaching (See FUEL PUMP)
9 5 BEARING, camshaft and balance shaft (See CAMSHAFT AND
BALANCE SHAFT)
9A 6 BOLT, cylinder head (Not illustrated. See CYLINDER HEAD)
10 6 COVER, lower push rod
11 6 PLUG, retaining, lower push rod cover
12 12 SEAL, lower push rod cover
Not illustrated. See
VALVE MECHANISM
13 12 WASHER, lower push rod cover seal
13A 2 GUIDE, camshaft follower
14 5154970 1 TUBE ASSEMBLY, air box drain (1 TUBE, 1 NUT)
914094 1 ELBOW, inverted flare, 90 ° , 3/16" tube, 1/8"NPT male
15 5152640 1 CLIP, air box drain tube
16 5154221 2 COVER, cylinder block handhole
17 013059 4 CAPSCREW, 3/8"NC x 2"
18 040400 4 GASKET (copper) 064349 '
19 5152288 2 GASKET, cylinder block handhole cover 064349
{ 5170094 1 GUIDE, oil level dipstick (drive-in type)(Used on engines prior to
#271-12671)
20
5174687 1 GUIDE, oil level dipstick (screw-type)(Effective with engine #271-
12671)
I 5170057 1 DIPSTICK, oil level gauge (Used on engines prior to #271-12671)
21
5174696 1 DIPSTICK, oil level gauge (Effective with engine #271-12671)
22 5150475 1 GASKET, oil level dipstick (Used on engines prior to #271-12671) . . 064349
9

7 2 6 5
19 18 14 15 16
17
4
CRANKSHAFT AND FLYWHEEL
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The Allis Chalmers HD5 Crawler Tractor Parts Manual is a comprehensive guide for repairing and maintaining the HD5 Crawler Tractor. This manual is valuable for both professional mechanics and DIY enthusiasts.
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