ZF M/T 87-92 6.9L & 7.3L , 5SPD , 2WD , 4.14-0.77 , 8T SPEEDO. For Applications That Are not Using The PTO
Zumbrota Drivetrain Manual Transmissions are rebuilt to the highest quality standards using a 3 step inspection process. Step 1 is a pre-inspection for case cracks, excessive wear, and OEM specific problems. Step 2 measures component parts to ensure OEM specifications are met. Step 3 ensures each unit is built to our exacting quality standards. Shaft straightness, gear wear & synchronizers are extensively tested to meet OEM specs. Seals are replaced and units are dyno-tested for operation, shiftability, and noise level. Unrivaled standards are set for unit precision and reliability at all critical touchpoints. Then an exclusive hydro-blast rinse & sandblasting procedure on internal and external parts, followed by proprietary shot-enticed deep cleaning, sets the standard for manual transmission remanufacturing. All Zumbrota manual transmissions include a 2 year unlimited mileage warranty.
Quality inspections are conducted 3 times during the remanufacturing process
A pre-inspection is done to ensure the unit is free of case cracks, excessive wear and to catch other OEM related problems that many cores have
A second inspection is conducted during the reman process to ensure all component parts meet OEM specifications
A final post-build inspection is done to ensure unit is built to our strict standards
100% inspection of internal parts, including gear wear checks, mainshaft straightness test and synchronizer testing.
All transmissions are dynometer tested and ran through numerous real life scenarios.