Allison Transmission MT643 Service Manual
ALLISON
MT/B 640, 643, 644, 647, 650, 653, 654
To Get The Correct Parts, You Must Provide The Assembly Number Found On The Transmisson Name Plate.
144
ALLISON
MT/B 640, 643, 644, 647, 650, 653, 654
To Get The Correct Parts, You Must Provide The Assembly Number Found On The Transmisson Name Plate.
ILL. DESCRIPTION QTY. YEAR PART NO. REFERENCE NO.
AT640
Allison Transmissions
MT/B 640, 643, 644, 647, 650, 653, 654
21 Bolt Pan
REBUILDER KITS
DELUXE MASTER LESS STEELS OVERHAUL GASKET &
DESCRIPTION QTY. YEAR KIT O/H KIT KIT KIT SEAL KIT
Kits - 640-643 (1) 1 - K2100 K2100-LS
Kits - 650-653 (2) 1 - K2100A K2100A-LS
Kits - 644 - PH1,2 1 - K2100B K2100B-LS
Kits - 654 - PH1,2 1 - K2100D K2100D-LS
Kit - 640-643/650-653 - w/Cork
Neo - w/Teflon Seal Kit 1 - K21900
Kit - 640-643/650-653 w/Victopac - Vespel Ring Kit 1 - K21900FW
Kit - 644/654 - w/Cork/Neo Standard Ring Kit 1 - K21900B
Kit - 644/654 - w/Victopac Vespel Ring Kit (29530326) 1 - K21900HW
Front Pump Reseal Kit (3) 1 - K21900-2
Kit - w/o Pan Gasket 640/643/650/653 1 - K21900NP
(1) To replace 29502306 Factory Master Kit, also order K21950 bearing kit and 21800 filter.
(2) To replace 29502307 Factory Master Kit, also order K21950 bearing kit and 21800 filter.
(3) Contains front pump gasket, rubber lathe cut seal, o-ring and pump bolt washers.
145
ALLISON
MT/B 640, 643, 644, 647, 650, 653, 654
To Get The Correct Parts, You Must Provide The Assembly Number Found On The Transmisson Name Plate.
ILL. DESCRIPTION QTY. YEAR PART NO. REFERENCE NO.
MISCELLANEOUS GASKETS & SEALS/PAN GASKETS
1F Gasket - Oil Pan - Cork & Neoprene ........................................................................... 1 - 13540X 29501160
1F Gasket - Oil Pan - Update - Armstrong® ..................................................(23016682) 1 - 13540W 29501160
3A O - Ring - Lockup Clutch - Inner - Polyacrylate - exc. 644,654 ................................... 1 - 3366PL 6770820
3A Seal - Lathe Cut - Lockup Clutch - Inner - 644, 654 .................................................. 1 - 13176 6770492
5A Seal - Lathe Cut - Lockup Clutch - Outer - exc. 644, 654 .......................................... 1 - 13159 6758036
5A Seal - Lathe Cut - Lockup Clutch - Outer - 644, 654.................................................. 1 - 13177 6758740
7A Seal - Lathe Cut - Lockup Clutch Backing Plate (Yellow Stripe) .................................. 1 - 13151 23016564
9A Gasket - Conver ter Pump Hub - 640,650 ................................................................... 1 - 13150W 29536726
9A Gasket - Conver ter Pump Hub - 644, 654 .................................................................. 1 - 13174 6771366
12A Seal - Lathe Cut - Converter Pump Cover - exc. 644, 654 (Yellow Stripe) .................. 1 - 13151 23016564
12A Seal - Lathe Cut - Converter Pump Cover - 644, 654 (Green Stripe) .......................... 1 - 13175 6880389
15B Seal - Lathe Cut - Front Pump (Green Stripe) ............................................................ 1 - 13160 23016347
N.I. Seal - Washer - Front Pump Bolt ...............................................................(6834908) 12 - 13161 29512113
18B Gasket - Front Pump To Case .................................................................................... 1 - 13162 23046344
20B Lip Seal - Forward Clutch - Inner ...............................................................(8623121) 1 - 3284L 23015880
21B Lip Seal - Forward Clutch - Outer ............................................................................... 1 - 13163 6833981
25C Lip Seal - Fourth Clutch - Outer ................................................................................. 1 - 13163 6833981
26C Lip Seal - Fourth Clutch - Inner .................................................................................. 1 - 3284L 23015880
28C Lip Seal - Third Clutch - Inner .................................................................................... 1 - 13164 23011471
29C Lip Seal - Third Clutch - Outer ................................................................................... 1 - 13165 6883035
N.I. O-ring - Center Suppor t (Star ting With Serial No. 100432) ......................................... 1 - 13172 6761244
32C Lip Seal - Second Clutch - Outer ................................................................................ 1 - 13165 6883035
34C Lip Seal - Second Clutch - Inner ................................................................................ 1 - 13164 23011471
47F Gasket - Power Takeoff Cover - Update - Armstrong® .............................(23016683) 1 - 13158W 29501161
49F Gasket - Lube Valve Adapter ...................................................................................... 1 - 13166 6884872
52F O-ring - Oil Filter Tube (Polyacrylate) ......................................................................... 1 - 3435PL 6762127
51F O-ring - Modulator ..................................................................................(23017367) 1 - 3410L 8658110
36E Lip Seal - First Clutch - Outer ..................................................................................... 1 - 13169 6883033
37E Lip Seal - First Clutch - Inner ..................................................................................... 1 - 13170 6883031
39E Gasket - Adapter Housing ..........................................................................(6837442) 1 - 13171 23045099
43E Lip Seal - Low Clutch - Outer ..................................................................................... 1 - 13165 6883035
44E Lip Seal - Low Clutch - Inner ..................................................................................... 1 - 13170 6883031
55F Gasket - Rear Cover .................................................................................................. 1 - 13171 23045099
57F Gasket - Governor Cover - Fibre ................................................................................ 1 - 3914D 23011670
57F Gasket - Governor Cover - Update - Armstrong® ....................................(23011670) 1 - 3914LW 23018625
59F O-ring - Governor Filter/Cooler Fitting ......................................................................... 1-2 - 13173 6882689
N.I. Washer - Drain Plug -Coated ..................................................................................... 1 - 11423B 29507909
N.I. Washer - Cover - Coated ........................................................................................... 1 - 21154 N.L.
N.I. O-Ring - Conver ter Plug/Cooler Fitting (Brown) .......................................................... 1 - 13180 N.L.
CLUTCH PLATES
60A Friction - Lockup Clutch - Graphitec - 640, 643,650, 653 - Not In Kits (4) .................. 1 - R21106 23046108
60A Friction - Lockup Clutch - 644, 654 - Not In Kits (5) ................................................. 1 - W31102 23048511
63B Friction - Forward Clutch (4) ..................................................................................... 5/6 - R21103 23042200
63B Friction - Forward Clutch (5) ..................................................................................... 5/6 - W21103 23042200
65C Friction - Fourth Clutch (4) ....................................................................................... 4/5 - R21103 23042200
65C Friction - Fourth Clutch (5) ....................................................................................... 4/5 - W21103 23042200
67C Friction - Third Clutch (4) ......................................................................................... 3 - R21104 23042201
67C Friction - Third Clutch (5) ......................................................................................... 3 - W21104 23042201
69C Friction - Second Clutch (4) ..................................................................................... 3/4 - R21104 23042201
69C Friction - Second Clutch (5) ..................................................................................... 3/4 - W21104 23042201
81E Friction - First Clutch (4) ........................................................................(23042199) 6 - R11104 29529492
81E Friction - First Clutch (5) .......................................................................................... 6 - W11104 23042199
(4) Raybestos brand plate. OEM approved heat-treated paper.
(5) S.K. Wellman plate. OEM approved graphitic.
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