Make your own free website on Tripod.com

Transmission Update Parts


Bulletin Dated July 2011 (Left For Reference ONLY...Use The New Bulletin Below) - FSB 431-003

Refer To NEW Field Service Bulletin For Important Synchro Part Changeover
And Current Updated Parts...Bulletin Dated January 2013 -
FSB 431-003-03


New Bulletin: When replacing the Synchro Assy, High Gear, or Low Gear then ALL 3 pieces must be changed!

Below are the more popular models...to view other models please refer to the bulletin

 

T2090 / T2100 Models

For Reference You Can Use Chassis CH613  - 1050 or Arrangement # 11KB51413

PART# DESCRIPTION QUANTITY
21728520 320KB3147
REPLACE ALL THREE PARTS IN SETS ONLY
Synchronizer 1
21633318 764KB4270
REPLACE ALL THREE PARTS IN SETS ONLY
High Gear 1
21631765 84KC46
REPLACE ALL THREE PARTS IN SETS ONLY
Low Gear 1
575KB450 / 25113661 High - Low Fork 1
629KB53A / 25100071 Back Case Gasket 1
629KB417 / 25500176 Shifter Fork Housing Gasket 1
629KB318 Compound Shift Cover Gasket 1
********** ALL THESE ORINGS COME IN ORING KIT 207SH35 **********
56AX513 High - Low Piston Oring 2
56AX533 High - Low Piston Oring 2
56AX534 / 25107486 High - Low Piston Oring 2
********** ALL THESE ORINGS COME IN ORING KIT 207SH35 **********
629KB250 / 25158604 New Style Shifter Gasket 1
88AX471 / 25623778 Rear Trans Seal 1
629KB331A / 25501461 Rear Trans Seal Hsg. Gasket 1
46AX522 / 25108017 Rear Trans Bearing 1
342SX32 Silicone 1

 

T310M Models

For Reference You Can Use Chassis CV713  - 42946 or Arrangement # 11KB106Y

PART# DESCRIPTION QUANTITY
21728520 320KB3147
REPLACE ALL THREE PARTS IN SETS ONLY
Synchronizer 1
21649207 764KB4123
REPLACE ALL THREE PARTS IN SETS ONLY
High Gear 1
21631781 84KC47
REPLACE ALL THREE PARTS IN SETS ONLY
Low Gear 1
575KB457 / 25126946 High - Low Fork 1
629KB53A / 25100071 Back Case Gasket 1
629KB417 / 25500176 Shifter Fork Housing Gasket 1
629KB318 Compound Shift Cover Gasket 1
********** ALL THESE PARTS COME IN ORING KIT 207SH37 **********
56AX558 / 25106631 High - Low Piston Oring 1
561KC23 / 25633214 Rod Seal 1
629KB251 / 25498850 Shift Cylinder Gasket 1
89KB21 / 25500052 Piston Wear Ring 1
561KC22 / 25633213 Piston Seal 1
********** ALL THESE PARTS COME IN ORING KIT 207SH37 **********
629KB250 / 25158604 New Style Shifter Gasket 1
88AX471 / 25500176 Rear Trans Seal 1
629KB331A / 25501461 Rear Trans Seal Hsg. Gasket 1
46AX522 / 25108017 Rear Trans Bearing 1
342SX32 Silicone 1

 

High / Low Range Valve On Top Cover For All These Models

216KD42A / 21041938

Mounting Bolts: 2 - 130AX1369 / 25111126 (Tapered Screw)       2 - 6AX1294 (Hex Bolt)

Mounting Oring - 56AX546 / 25107777

Brass Fittings For Valve (T310M Only): 63AX54122 / 20705080 QTY: 2

 

T2180B Model

For Reference You Can Use Chassis CH613 - 65575 or Arrangement # 11KB51431 (For T2180B)

PART# DESCRIPTION QUANTITY
21728520 320KB3147
REPLACE ALL THREE PARTS IN SETS ONLY
Synchronizer 1
21649207 764KB4123
REPLACE ALL THREE PARTS IN SETS ONLY
High Gear 1
21631781 84KC47
REPLACE ALL THREE PARTS IN SETS ONLY
Low Gear 1
575KB457 / 25126946 High - Low Fork 1
629KB53A / 25100071 Back Case Gasket 1
629KB417 / 25500176 Shifter Fork Housing Gasket 1
629KB335A / 25500633 Compound Shift Cover Gasket 1
629KB331A / 25501461 Rear Trans Seal Hsg. Gasket 1
88AX471 / 25623778 Rear Trans Seal 1
629KB250 / 25158604 New Style Shifter Gasket 1
********** ALL THESE ORINGS COME IN ORING KIT 207SH36A **********
56AX533 Shift Piston Oring 1
56AX594 / 25500575 Shift Piston Oring 1
56AX557 / 25108262 Shift Piston Oring 1
56AX558 / 25106631 Shift Piston Oring 1
56AX559 / 25108613 Shift Piston Oring 1
56AX595 / 25500197 Shift Piston Oring 1
56AX561 / 25109120 Shift Piston Oring 1
56AX552 / 25108468 Shift Piston Oring 1
56AX589 / 25089216 Shift Piston Oring 3
56AX590 / 25086968 Shift Piston Oring 1
56AX564 / 25089809 Shift Piston Oring 2
56AX560 Shift Piston Oring 1
56AX588 Shift Piston Oring 1
********** ALL THESE ORINGS COME IN ORING KIT 207SH36A **********
46AX522 / 25108017 Rear Trans Bearing 1
342SX32 Silicone 1

 

Other Transmission Reference Material
Transmission Model Chassis Number Assembly Number Type
T2050 CH613 - 1010 11KB51406 5 Speed
T2060 CV713 - 1764 11KB51611P2 6 Speed
T2080 CV713 - 1591 11KB51615 8 Speed
T2110 CV713 - 2234 11KB51632 11 Speed
T2100 CH613 - 1544 11KB51385BP2 10 Speed
TRTXL1070 CH613 - 3714 11KB5108P1 12 Speed
TRTXL1070B CH613 - 7903 11KB51375 12 Speed
TRQ7220 R686ST - 11298 11KB1755BP2 Quadruplex
TRXL107 R686ST - 16527 11KB1893P1 6 Speed
TRL1076 R686ST - 26019 11KB1907P1 5 Speed
TRXL1071 R686ST - 17093 11KB1894P1 6 Speed
TRL1078 RD688S - 8872 11KB51181A 5 Speed

Back To Chicago Mack Index Page